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<sys/cdefs.h>: Inhibit macro expansion for __glibc_has_include
This is currently ineffective with GCC because of GCC PR 80005, but it makes sense to anticipate a fix for this defect. Suggested by Zack Weinberg. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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2019-06-14 Florian Weimer <fweimer@redhat.com>
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* misc/sys/cdefs.h (__glibc_has_include): Do not use a
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function-like macro, so that __has_include can inhibit expansion
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of its argument.
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2019-06-13 Joseph Myers <joseph@codesourcery.com>
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* sysdeps/unix/sysv/linux/bits/in.h (IPV6_ROUTER_ALERT_ISOLATE):
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@ -413,7 +413,9 @@
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#endif
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#ifdef __has_include
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# define __glibc_has_include(header) __has_include (header)
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/* Do not use a function-like macro, so that __has_include can inhibit
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macro expansion. */
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# define __glibc_has_include __has_include
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#else
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# define __glibc_has_include(header) 0
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#endif
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