ABSL_INTERNAL_HAS_CXA_DEMANGLE: Check __GNUC__ is defined.

PiperOrigin-RevId: 571929102 Change-Id: I8fb907d047a4ff3bb42e7c7f99454fa687b8f1c9

ABSL_INTERNAL_HAS_CXA_DEMANGLE: Check GNUC is defined.
PiperOrigin-RevId: 571929102 Change-Id: I8fb907d047a4ff3bb42e7c7f99454fa687b8f1c9
5dc0e78a · Abseil Team · Copybara-Service · 4335b3f8 · 5dc0e78a
Commit 5dc0e78a authored Oct 09, 2023 by Abseil Team Committed by Copybara-Service Oct 09, 2023
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absl/base/config.h
+2 -1

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--- a/absl/base/config.h
+++ b/absl/base/config.h
@@ -870,7 +870,8 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 #error ABSL_INTERNAL_HAS_CXA_DEMANGLE cannot be directly set
 #elif defined(OS_ANDROID) && (defined(__i386__) || defined(__x86_64__))
 #define ABSL_INTERNAL_HAS_CXA_DEMANGLE 0
-#elif (__GNUC__ >= 4 || (__GNUC__ >= 3 && __GNUC_MINOR__ >= 4)) && \
+#elif defined(__GNUC__) && defined(__GNUC_MINOR__) &&            \
+    (__GNUC__ >= 4 || (__GNUC__ >= 3 && __GNUC_MINOR__ >= 4)) && \
    !defined(__mips__)
 #define ABSL_INTERNAL_HAS_CXA_DEMANGLE 1
 #elif defined(__clang__) && !defined(_MSC_VER)