Build bionic unit tests for musl

Modify bionic unit tests that are built for glibc so that they also
build against musl.  They don't all pass though:

With glibc:
 2 SLOW TESTS
 4 TIMEOUT TESTS
313 FAILED TESTS
  YOU HAVE 2 DISABLED TESTS

With musl:
11 SLOW TESTS
11 TIMEOUT TESTS
363 FAILED TESTS
  YOU HAVE 2 DISABLED TESTS

Bug: 190084016
Test: m bionic-unit-tests-glibc with musl
Test: atest bionic-unit-tests-static
Test: atest --host bionic-unit-tests-glibc with glibc
Change-Id: I79b6eab04fed3cc4392450df5eef2579412edfe1

1 files changed, 8 insertions, 0 deletions

diff --git a/tests/fenv_test.cpp b/tests/fenv_test.cpp
index d49597091..ea3f53902 100644
--- a/tests/fenv_test.cpp
+++ b/tests/fenv_test.cpp
@@ -170,6 +170,7 @@ TEST(fenv, fegetexceptflag_fesetexceptflag) {
 }
 
 TEST(fenv, fedisableexcept_fegetexcept) {
+#if !defined(MUSL)
   feclearexcept(FE_ALL_EXCEPT);
   ASSERT_EQ(0, fetestexcept(FE_ALL_EXCEPT));
 
@@ -178,9 +179,13 @@ TEST(fenv, fedisableexcept_fegetexcept) {
   ASSERT_EQ(0, fegetexcept());
   ASSERT_EQ(0, feraiseexcept(FE_INVALID));
   ASSERT_EQ(FE_INVALID, fetestexcept(FE_ALL_EXCEPT));
+#else
+  GTEST_SKIP() << "musl doesn't have fegetexcept";
+#endif
 }
 
 TEST(fenv, feenableexcept_fegetexcept) {
+#if !defined(MUSL)
 #if defined(__aarch64__) || defined(__arm__)
   // ARM doesn't support this. They used to if you go back far enough, but it was removed in
   // the Cortex-A8 between r3p1 and r3p2.
@@ -213,4 +218,7 @@ TEST(fenv, feenableexcept_fegetexcept) {
 
   AssertChildExited(pid, -SIGFPE);
 #endif
+#else
+  GTEST_SKIP() << "musl doesn't have fegetexcept";
+#endif
 }