From: Nick Clifton <nickc@redhat.com>
Date: Tue, 5 Jan 2016 10:57:01 +0000 (+0000)
Subject: re PR target/66655 (miscompilation due to ipa-ra on MinGW)
X-Git-Tag: basepoints/gcc-7~1826
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3360dc9fc25128a3194bad65e94305944ff223d2;p=thirdparty%2Fgcc.git

re PR target/66655 (miscompilation due to ipa-ra on MinGW)

	PR target/66655
	* config/i386/cygming.h (MAKE_DECL_ONE_ONLY): Define to use weak
	decls if weak support is available.

From-SVN: r232071
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4ec3229be0ef..c1f2cfc3be85 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2016-01-05  Nick Clifton  <nickc@redhat.com>
+
+	PR target/66655
+	* config/i386/cygming.h (MAKE_DECL_ONE_ONLY): Define to use weak
+	decls if weak support is available.
+
 2016-01-04  Martin Sebor  <msebor@redhat.com>
 
 	* doc/invoke.texi (Warning Options): Document -Winvalid-memory-model.
diff --git a/gcc/config/i386/cygming.h b/gcc/config/i386/cygming.h
index 1cf56f676f12..71019cbfdbc3 100644
--- a/gcc/config/i386/cygming.h
+++ b/gcc/config/i386/cygming.h
@@ -432,6 +432,11 @@ do {						\
       fputc ('\n', (FILE));           \
     }                                 \
   while (0)
+
+/* Use the weak support for ONE_ONLY decls.  */
+#undef  MAKE_DECL_ONE_ONLY
+#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
+
 #endif /* HAVE_GAS_WEAK */
 
 /* FIXME: SUPPORTS_WEAK && TARGET_HAVE_NAMED_SECTIONS is true,