From: Pali Rohár <pali.ro...@gmail.com>
If the mingw-w64 headers are included in a way that doesn't mute
warnings in system headers, this header causes lots of warnings like:
warning: this use of "defined" may not be portable
It is caused by the fact that this macro __INTRINSIC_PROLOG uses
non-portable Conditional inclusion (ISO WG14 N2176 (C17) 6.10.1/4).
Disable this gcc warning via localized GCC pragmas to prevent 300 lines of
warnings for every application.
Signed-off-by: Martin Storsjö <mar...@martin.st>
---
mingw-w64-headers/include/psdk_inc/intrin-impl.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/mingw-w64-headers/include/psdk_inc/intrin-impl.h
b/mingw-w64-headers/include/psdk_inc/intrin-impl.h
index b30e0404b..16ccecc13 100644
--- a/mingw-w64-headers/include/psdk_inc/intrin-impl.h
+++ b/mingw-w64-headers/include/psdk_inc/intrin-impl.h
@@ -67,6 +67,17 @@ __INTRINSICS_USEINLINE
#define __has_builtin(x) 0
#endif
+/*
+ * Macro __INTRINSIC_PROLOG uses non-portable Conditional inclusion
+ * (ISO WG14 N2176 (C17) 6.10.1/4). Avoid gcc 7+ -Wexpansion-to-defined
+ * warning enabled by -W or -Wextra option.
+ * In Clang, this warning is enabled by -pedantic.
+ */
+#if defined(__GNUC__) && (__GNUC__ >= 7 || defined(__clang__))
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wexpansion-to-defined"
+#endif
+
/* These macros are used by the routines below. While this file may be
included
multiple times, these macros only need to be defined once. */
#ifndef _INTRIN_MAC_
@@ -2289,6 +2300,10 @@ __build_writecr(__writecr8, unsigned __LONG32, "8")
#undef __FLAGCLOBBER1
#undef __FLAGCLOBBER2
+#if defined(__GNUC__) && (__GNUC__ >= 7 || defined(__clang__))
+#pragma GCC diagnostic pop
+#endif
+
#pragma pop_macro("__has_builtin")
#endif /* __MINGW_INTRIN_INLINE */
--
2.34.1
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