fix building w/gcc-5+ due to mismatch in gnu_inline attributes

2 files changed, 65 insertions, 0 deletions

diff --git a/4.7.1/gentoo/72_all_gcc-gperf-gnu-inline.patch b/4.7.1/gentoo/72_all_gcc-gperf-gnu-inline.patch
new file mode 100644
index 0000000..34292a9
--- /dev/null
+++ b/4.7.1/gentoo/72_all_gcc-gperf-gnu-inline.patch
@@ -0,0 +1,64 @@
+https://gcc.gnu.org/ml/gcc-patches/2015-08/msg00375.html
+
+From 1de9842cba4749376b545a09ef0b4fc195d319a6 Mon Sep 17 00:00:00 2001
+From: Mike Frysinger <vapier@gentoo.org>
+Date: Thu, 6 Aug 2015 23:32:54 -0400
+Subject: [PATCH] cfns: fix mismatch in gnu_inline attributes
+
+Since the 3.0.3 release of gperf (made in May 2007), the generated func
+has had the gnu_inline attribute applied to it.  The gcc source however
+has not been updated to include that which has lead to a mismatch.
+
+In practice, this hasn't been an issue for two reasons:
+(1) Before gcc-5, the default standard was (gnu) C89, and gcc does not
+warn or throw an error in this mode.
+(2) Starting with gcc-4.8, the compiler driver used to build gcc was
+changed to C++, and g++ does not warn or throw an error in this mode.
+
+This error does show up though when using gcc-5 to build gcc-4.7 or
+older as then the default is (gnu) C11 and the C compiler driver is
+used.  That failure looks like:
+In file included from .../gcc-4.7.4/gcc/cp/except.c:990:0:
+cfns.gperf: At top level:
+cfns.gperf:101:1: error: 'gnu_inline' attribute present on 'libc_name_p'
+cfns.gperf:26:14: error: but not here
+
+Whether the compiler should always emit this error regardless of the
+active standard or compiler driver is debatable (I think it should be
+consistent -- either always do it or never do it).
+---
+ gcc/cp/cfns.gperf | 3 +++
+ gcc/cp/cfns.h     | 3 +++
+ 2 files changed, 6 insertions(+)
+
+diff --git a/gcc/cp/cfns.gperf b/gcc/cp/cfns.gperf
+index 68acd3d..953262f 100644
+--- a/gcc/cp/cfns.gperf
++++ b/gcc/cp/cfns.gperf
+@@ -22,6 +22,9 @@ __inline
+ static unsigned int hash (const char *, unsigned int);
+ #ifdef __GNUC__
+ __inline
++#ifdef __GNUC_STDC_INLINE__
++__attribute__ ((__gnu_inline__))
++#endif
+ #endif
+ const char * libc_name_p (const char *, unsigned int);
+ %}
+diff --git a/gcc/cp/cfns.h b/gcc/cp/cfns.h
+index 1c6665d..6d00c0e 100644
+--- a/gcc/cp/cfns.h
++++ b/gcc/cp/cfns.h
+@@ -53,6 +53,9 @@ __inline
+ static unsigned int hash (const char *, unsigned int);
+ #ifdef __GNUC__
+ __inline
++#ifdef __GNUC_STDC_INLINE__
++__attribute__ ((__gnu_inline__))
++#endif
+ #endif
+ const char * libc_name_p (const char *, unsigned int);
+ /* maximum key range = 391, duplicates = 0 */
+-- 
+2.4.4
+
diff --git a/4.7.1/gentoo/README.history b/4.7.1/gentoo/README.history
index dbbc797..a267a1f 100644
--- a/4.7.1/gentoo/README.history
+++ b/4.7.1/gentoo/README.history
@@ -2,6 +2,7 @@
 	- 03_all_java-nomulti.patch
 	+ 40_all_superh-mieee-default-fix-pr33135.patch
 	U 67_all_gcc-poison-system-directories.patch
+	+ 72_all_gcc-gperf-gnu-inline.patch
 	- 74_all_gcc46_cloog-dl.patch
 	- 90_all_gcc-4.7-x32.patch