compiler_wrapper: Disable warning implicit-function-declaration

Wimplicit-function-declaration has been promoted to be an default error
even with Wno-error. Disable the error by default since it is breaking
a lot of packages.

BUG=b:230345382
TEST=cq

Change-Id: Ib46b0b47a3e1dea3797739370a4d9cf92a4d25f9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/3637117
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Auto-Submit: Manoj Gupta <manojgupta@chromium.org>
Reviewed-by: George Burgess <gbiv@chromium.org>
Commit-Queue: Manoj Gupta <manojgupta@chromium.org>

9 files changed, 116 insertions, 116 deletions

diff --git a/compiler_wrapper/testdata/cros_clang_host_golden/bisect.json b/compiler_wrapper/testdata/cros_clang_host_golden/bisect.json
index e237c7c7..b8abc564 100644
--- a/compiler_wrapper/testdata/cros_clang_host_golden/bisect.json
+++ b/compiler_wrapper/testdata/cros_clang_host_golden/bisect.json
@@ -37,14 +37,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ],
           "env_updates": [
             "PYTHONPATH=/somepath/test_binary"
@@ -92,14 +92,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ],
           "env_updates": [
             "PYTHONPATH=/somepath/test_binary"
@@ -150,14 +150,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ],
           "env_updates": [
             "PYTHONPATH=/somepath/test_binary"
diff --git a/compiler_wrapper/testdata/cros_clang_host_golden/clang_ftrapv_maincc_target_specific.json b/compiler_wrapper/testdata/cros_clang_host_golden/clang_ftrapv_maincc_target_specific.json
index 07fccc6d..5e903aa7 100644
--- a/compiler_wrapper/testdata/cros_clang_host_golden/clang_ftrapv_maincc_target_specific.json
+++ b/compiler_wrapper/testdata/cros_clang_host_golden/clang_ftrapv_maincc_target_specific.json
@@ -28,14 +28,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -70,14 +70,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -112,14 +112,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -154,14 +154,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -196,14 +196,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -238,14 +238,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -280,14 +280,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -322,14 +322,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -364,14 +364,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
diff --git a/compiler_wrapper/testdata/cros_clang_host_golden/clang_host_wrapper.json b/compiler_wrapper/testdata/cros_clang_host_golden/clang_host_wrapper.json
index a221605e..c2df9112 100644
--- a/compiler_wrapper/testdata/cros_clang_host_golden/clang_host_wrapper.json
+++ b/compiler_wrapper/testdata/cros_clang_host_golden/clang_host_wrapper.json
@@ -27,14 +27,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
diff --git a/compiler_wrapper/testdata/cros_clang_host_golden/clang_maincc_target_specific.json b/compiler_wrapper/testdata/cros_clang_host_golden/clang_maincc_target_specific.json
index 2130d528..77953e7b 100644
--- a/compiler_wrapper/testdata/cros_clang_host_golden/clang_maincc_target_specific.json
+++ b/compiler_wrapper/testdata/cros_clang_host_golden/clang_maincc_target_specific.json
@@ -27,14 +27,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -68,14 +68,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -109,14 +109,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -150,14 +150,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -191,14 +191,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -232,14 +232,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -273,14 +273,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -314,14 +314,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -355,14 +355,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
diff --git a/compiler_wrapper/testdata/cros_clang_host_golden/clang_path.json b/compiler_wrapper/testdata/cros_clang_host_golden/clang_path.json
index 43ae728a..ac5f51f9 100644
--- a/compiler_wrapper/testdata/cros_clang_host_golden/clang_path.json
+++ b/compiler_wrapper/testdata/cros_clang_host_golden/clang_path.json
@@ -27,14 +27,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -71,14 +71,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         },
         "stdout": "somemessage",
@@ -115,14 +115,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -159,14 +159,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -210,6 +210,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-resource-dir=someResourceDir",
@@ -218,8 +219,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -266,6 +266,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-resource-dir=someResourceDir",
@@ -274,8 +275,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -322,6 +322,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-resource-dir=someResourceDir",
@@ -330,8 +331,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         },
         "stdout": "somemessage",
@@ -368,14 +368,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -409,14 +409,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -450,14 +450,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -491,14 +491,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -535,14 +535,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
diff --git a/compiler_wrapper/testdata/cros_clang_host_golden/clang_sanitizer_args.json b/compiler_wrapper/testdata/cros_clang_host_golden/clang_sanitizer_args.json
index b8b28cd9..65200861 100644
--- a/compiler_wrapper/testdata/cros_clang_host_golden/clang_sanitizer_args.json
+++ b/compiler_wrapper/testdata/cros_clang_host_golden/clang_sanitizer_args.json
@@ -29,6 +29,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-fsanitize=kernel-address",
@@ -36,8 +37,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -73,6 +73,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-fsanitize=kernel-address",
@@ -80,8 +81,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -117,6 +117,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-fsanitize=kernel-address",
@@ -124,8 +125,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -161,6 +161,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-fsanitize=kernel-address",
@@ -168,8 +169,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -204,6 +204,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-fsanitize=fuzzer",
@@ -211,8 +212,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -248,6 +248,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-fsanitize=address",
@@ -256,8 +257,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -292,6 +292,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-fsanitize=address",
@@ -299,8 +300,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -335,6 +335,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-fprofile-instr-generate",
@@ -342,8 +343,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
diff --git a/compiler_wrapper/testdata/cros_clang_host_golden/clang_specific_args.json b/compiler_wrapper/testdata/cros_clang_host_golden/clang_specific_args.json
index 7c4afd32..99ac75c8 100644
--- a/compiler_wrapper/testdata/cros_clang_host_golden/clang_specific_args.json
+++ b/compiler_wrapper/testdata/cros_clang_host_golden/clang_specific_args.json
@@ -37,6 +37,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-mno-movbe",
@@ -51,8 +52,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -87,6 +87,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-Wno-#warnings",
@@ -94,8 +95,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -130,6 +130,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-Wno-error=uninitialized",
@@ -137,8 +138,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -173,6 +173,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "-someflag",
@@ -180,8 +181,7 @@
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
diff --git a/compiler_wrapper/testdata/cros_clang_host_golden/clangtidy.json b/compiler_wrapper/testdata/cros_clang_host_golden/clangtidy.json
index f678ba64..1371acb1 100644
--- a/compiler_wrapper/testdata/cros_clang_host_golden/clangtidy.json
+++ b/compiler_wrapper/testdata/cros_clang_host_golden/clangtidy.json
@@ -43,14 +43,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       },
@@ -71,14 +71,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -129,14 +129,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       },
@@ -157,14 +157,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -217,14 +217,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         },
         "stdout": "somemessage",
@@ -248,14 +248,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -309,14 +309,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       },
@@ -337,14 +337,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         },
         "stdout": "somemessage",
diff --git a/compiler_wrapper/testdata/cros_clang_host_golden/force_disable_werror.json b/compiler_wrapper/testdata/cros_clang_host_golden/force_disable_werror.json
index f5a77714..821682ab 100644
--- a/compiler_wrapper/testdata/cros_clang_host_golden/force_disable_werror.json
+++ b/compiler_wrapper/testdata/cros_clang_host_golden/force_disable_werror.json
@@ -30,14 +30,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         }
       }
@@ -74,14 +74,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         },
         "stderr": "-Werror originalerror",
@@ -104,6 +104,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
@@ -111,7 +112,6 @@
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
             "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable",
             "-Wno-error",
             "-Wno-error=poison-system-directories"
           ]
@@ -152,14 +152,14 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
             "-Wno-implicit-int-float-conversion",
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
-            "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable"
+            "-Wno-deprecated-copy"
           ]
         },
         "stderr": "-Werror originalerror",
@@ -182,6 +182,7 @@
             "-fexperimental-new-pass-manager",
             "-Wno-compound-token-split-by-macro",
             "-Wno-deprecated-declarations",
+            "-Wno-error=implicit-function-declaration",
             "-fcrash-diagnostics-dir=/tmp/stable/clang_crash_diagnostics",
             "-fcommon",
             "main.cc",
@@ -189,7 +190,6 @@
             "-Wno-compound-token-split-by-space",
             "-Wno-string-concatenation",
             "-Wno-deprecated-copy",
-            "-Wno-unused-but-set-variable",
             "-Wno-error",
             "-Wno-error=poison-system-directories"
           ]