[compiler-rt] Work around a warning from -Wgnu-anonymous-struct

[kazutakahirata]

This patch works around:

compiler-rt/lib/tysan/../sanitizer_common/sanitizer_platform_limits_posix.h:604:3:
error: anonymous structs are a GNU extension
[-Werror,-Wgnu-anonymous-struct]

[llvmbot]

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: Kazu Hirata (kazutakahirata)

Changes

This patch works around:

compiler-rt/lib/tysan/../sanitizer_common/sanitizer_platform_limits_posix.h:604:3:
error: anonymous structs are a GNU extension
[-Werror,-Wgnu-anonymous-struct]

---

Full diff: https://github.com/llvm/llvm-project/pull/120314.diff

1 Files Affected:

• (modified) compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h (+7)

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h
index cacbb5b9959e0a..a5566d652580cb 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h
@@ -601,6 +601,10 @@ struct __sanitizer_siginfo_pad {
 #if SANITIZER_LINUX
 # define SANITIZER_HAS_SIGINFO 1
 union __sanitizer_siginfo {
+# ifdef __clang__
+#  pragma clang diagnostic push
+#  pragma clang diagnostic ignored "-Wgnu-anonymous-struct"
+# endif
   struct {
     int si_signo;
 # if SANITIZER_MIPS
@@ -611,6 +615,9 @@ union __sanitizer_siginfo {
     int si_code;
 # endif
   };
+# ifdef __clang__
+#  pragma clang diagnostic pop
+# endif
   __sanitizer_siginfo_pad pad;
 };
 #else

[github-actions]

✅ With the latest revision this PR passed the C/C++ code formatter.

[tavianator]

Would it work to just add __extension__ instead?

[kazutakahirata]

Would it work to just add __extension__ instead?

That works. It's a lot simpler. Thanks!

[chapuni]

Please go ahead. Better than nothing. Thanks!