enable gcc/clang address sanitizer if the builder wants it

Enable AddressSanitizer to look for memory usage errors if the builder
asks for it and it's available.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

1 files changed, 52 insertions, 0 deletions

diff --git a/configure b/configure
index c0f8c4bd..e1599f33 100755
--- a/configure
+++ b/configure
@@ -653,6 +653,9 @@ E2SCRUB_CMT
 UNIX_CMT
 CYGWIN_CMT
 LINUX_CMT
+addrsan_ldflags
+addrsan_cflags
+have_addrsan
 ubsan_ldflags
 ubsan_cflags
 have_ubsan
@@ -913,6 +916,7 @@ with_libintl_prefix
 enable_fuse2fs
 enable_lto
 enable_ubsan
+enable_addrsan
 with_multiarch
 with_udev_rules_dir
 with_crond_dir
@@ -1593,6 +1597,7 @@ Optional Features:
   --disable-fuse2fs	  do not build fuse2fs
   --enable-lto		  enable link time optimization
   --enable-ubsan	  enable undefined behavior sanitizer
+  --enable-addrsan	  enable address sanitizer
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -13919,6 +13924,53 @@ fi
 if test "$enable_ubsan" = "yes" && test "$have_ubsan" != "yes"; then
 	as_fn_error $? "UBSAN not supported by compiler." "$LINENO" 5
 fi
+# Check whether --enable-addrsan was given.
+if test "${enable_addrsan+set}" = set; then :
+  enableval=$enable_addrsan;
+else
+  enable_addrsan=no
+fi
+
+if test "$enable_addrsan" = "yes" || test "$enable_addrsan" = "probe"; then
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if C compiler supports ADDRSAN" >&5
+$as_echo_n "checking if C compiler supports ADDRSAN... " >&6; }
+	OLD_CFLAGS="$CFLAGS"
+	OLD_LDFLAGS="$LDFLAGS"
+	ADDRSAN_FLAGS="-fsanitize=address"
+	CFLAGS="$CFLAGS $ADDRSAN_FLAGS"
+	LDFLAGS="$LDFLAGS $ADDRSAN_FLAGS"
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+		addrsan_cflags=$ADDRSAN_FLAGS
+		addrsan_ldflags=$ADDRSAN_FLAGS
+		have_addrsan=yes
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+	CFLAGS="${OLD_CFLAGS}"
+	LDFLAGS="${OLD_LDFLAGS}"
+
+
+
+fi
+if test "$enable_addrsan" = "yes" && test "$have_addrsan" != "yes"; then
+	as_fn_error $? "ADDRSAN not supported by compiler." "$LINENO" 5
+fi
 LINUX_CMT="#"
 CYGWIN_CMT="#"
 UNIX_CMT=