30 lines
1.0 KiB
Diff
30 lines
1.0 KiB
Diff
commit 953ceff17a4a15b10cfdd5edc3c8cae4884c8ec3
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Author: Kamlesh Kumar <kamleshbhalui@gmail.com>
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Date: Thu Dec 5 16:49:00 2019 +0100
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<string.h>: Define __CORRECT_ISO_CPP_STRING_H_PROTO for Clang [BZ #25232]
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Without the asm redirects, strchr et al. are not const-correct.
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libc++ has a wrapper header that works with and without
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__CORRECT_ISO_CPP_STRING_H_PROTO (using a Clang extension). But when
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Clang is used with libstdc++ or just C headers, the overloaded functions
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with the correct types are not declared.
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This change does not impact current GCC (with libstdc++ or libc++).
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diff --git a/string/string.h b/string/string.h
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index 73c22a535a..faf997b972 100644
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--- a/string/string.h
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+++ b/string/string.h
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@@ -33,7 +33,8 @@ __BEGIN_DECLS
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#include <stddef.h>
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/* Tell the caller that we provide correct C++ prototypes. */
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-#if defined __cplusplus && __GNUC_PREREQ (4, 4)
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+#if defined __cplusplus && (__GNUC_PREREQ (4, 4) \
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+ || __glibc_clang_prereq (3, 5))
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# define __CORRECT_ISO_CPP_STRING_H_PROTO
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#endif
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