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-rw-r--r--ChangeLog16
-rw-r--r--libio/stdio.h2
-rw-r--r--math/bits/math-finite.h8
-rw-r--r--misc/sys/cdefs.h21
4 files changed, 33 insertions, 14 deletions
diff --git a/ChangeLog b/ChangeLog
index a40fb4622c..915b492006 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2014-09-16  Siddhesh Poyarekar  <siddhesh@redhat.com>
+	    Jakub Jelinek  <jakub@redhat.com>
+
+	[BZ #17266]
+	* libio/stdio.h: Check definition of __fortify_function
+	instead of __extern_always_inline to include bits/stdio2.h.
+	* math/bits/math-finite.h [__USE_XOPEN || __USE_ISOC99]: Also
+	check if __extern_always_inline is defined.
+	[__USE_MISC || __USE_XOPEN]: Likewise.
+	[__USE_ISOC99] Likewise.
+	* misc/sys/cdefs.h (__fortify_function): Define only if
+	__extern_always_inline is defined.
+	[!__cplusplus || __GNUC_PREREQ (4,3)]: Revert to defining
+	__extern_always_inline and __extern_inline only for g++-4.3
+	and newer or a compatible gcc.
+
 2014-09-15  Andreas Schwab  <schwab@linux-m68k.org>
 
 	[BZ #17371]
diff --git a/libio/stdio.h b/libio/stdio.h
index d8c0bdbab7..1f4f837203 100644
--- a/libio/stdio.h
+++ b/libio/stdio.h
@@ -932,7 +932,7 @@ extern void funlockfile (FILE *__stream) __THROW;
 #ifdef __USE_EXTERN_INLINES
 # include <bits/stdio.h>
 #endif
-#if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline
+#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
 # include <bits/stdio2.h>
 #endif
 #ifdef __LDBL_COMPAT
diff --git a/math/bits/math-finite.h b/math/bits/math-finite.h
index aa755de2e6..0656645cc6 100644
--- a/math/bits/math-finite.h
+++ b/math/bits/math-finite.h
@@ -251,7 +251,8 @@ extern long double __REDIRECT_NTH (lgammal_r, (long double, int *),
 # endif
 #endif
 
-#if defined __USE_XOPEN || defined __USE_ISOC99
+#if ((defined __USE_XOPEN || defined __USE_ISOC99) \
+     && defined __extern_always_inline)
 /* lgamma.  */
 __extern_always_inline double __NTH (lgamma (double __d))
 {
@@ -284,7 +285,8 @@ __extern_always_inline long double __NTH (lgammal (long double __d))
 # endif
 #endif
 
-#if defined __USE_MISC || defined __USE_XOPEN
+#if ((defined __USE_MISC || defined __USE_XOPEN) \
+     && defined __extern_always_inline)
 /* gamma.  */
 __extern_always_inline double __NTH (gamma (double __d))
 {
@@ -422,7 +424,7 @@ extern long double __REDIRECT_NTH (sqrtl, (long double), __sqrtl_finite);
 # endif
 #endif
 
-#ifdef __USE_ISOC99
+#if defined __USE_ISOC99 && defined __extern_always_inline
 /* tgamma.  */
 extern double __gamma_r_finite (double, int *);
 __extern_always_inline double __NTH (tgamma (double __d))
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index 04db9563fb..01e81ba9f1 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -131,7 +131,6 @@
 /* Fortify support.  */
 #define __bos(ptr) __builtin_object_size (ptr, __USE_FORTIFY_LEVEL > 1)
 #define __bos0(ptr) __builtin_object_size (ptr, 0)
-#define __fortify_function __extern_always_inline __attribute_artificial__
 
 #if __GNUC_PREREQ (4,3)
 # define __warndecl(name, msg) \
@@ -318,12 +317,13 @@
 # define __attribute_artificial__ /* Ignore */
 #endif
 
-#ifdef __GNUC__
-/* One of these will be defined if the __gnu_inline__ attribute is
-   available.  In C++, __GNUC_GNU_INLINE__ will be defined even though
-   __inline does not use the GNU inlining rules.  If neither macro is
-   defined, this version of GCC only supports GNU inline semantics. */
-# if defined __GNUC_STDC_INLINE__ || defined __GNUC_GNU_INLINE__
+/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+   inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+   or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+   older than 4.3 may define these macros and still not guarantee GNU inlining
+   semantics.  */
+#if !defined __cplusplus || __GNUC_PREREQ (4,3)
+# if defined __GNUC_STDC_INLINE__ || defined __cplusplus
 #  define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
 #  define __extern_always_inline \
   extern __always_inline __attribute__ ((__gnu_inline__))
@@ -331,9 +331,10 @@
 #  define __extern_inline extern __inline
 #  define __extern_always_inline extern __always_inline
 # endif
-#else /* Not GCC.  */
-# define __extern_inline  /* Ignore */
-# define __extern_always_inline /* Ignore */
+#endif
+
+#ifdef __extern_always_inline
+# define __fortify_function __extern_always_inline __attribute_artificial__
 #endif
 
 /* GCC 4.3 and above allow passing all anonymous arguments of an