safe_math.h: Check if __GNUC__ is defined

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=4880 Facing the below issue after openssl is upgraded Edk2\CryptoPkg\Library\OpensslLib\openssl\include\internal/safe_math.h(19): warning C4668: '__GNUC__' is not defined as a preprocessor macro, replacing with '0' for '#if/#elif' CLA: trivial Reviewed-by: Gerd Hoffmann <[email protected]> Signed-off-by: Kalavakolanu Hema Anmisha <[email protected]> Reviewed-by: Paul Dale <[email protected]> Reviewed-by: Tom Cosgrove <[email protected]> Reviewed-by: Tomas Mraz <[email protected]> (Merged from openssl#26204)
siemens · Dec 19, 2024 · 53b3456 · 53b3456
1 parent 009fa4f
commit 53b3456
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/include/internal/safe_math.h b/include/internal/safe_math.h
@@ -16,8 +16,10 @@
 # ifndef OPENSSL_NO_BUILTIN_OVERFLOW_CHECKING
 #  ifdef __has_builtin
 #   define has(func) __has_builtin(func)
-#  elif __GNUC__ > 5
-#   define has(func) 1
+#  elif defined(__GNUC__)
+#   if __GNUC__ > 5
+#    define has(func) 1
+#   endif
 #  endif
 # endif /* OPENSSL_NO_BUILTIN_OVERFLOW_CHECKING */