re PR tree-optimization/47276 (ICE in function_and_variable_visibility, at…

re PR tree-optimization/47276 (ICE in function_and_variable_visibility, at ipa.c:857 during compiling glibc.)

	PR tree-optimization/47276 
	* ipa.c (function_and_variable_visibility): Do not try to mark alias
	declarations as needed.
	* gcc.dg/pr47276.c: New testcase.

From-SVN: r168844

gcc/ChangeLog

+2011-01-13  Jan Hubicka  <jh@suse.cz>
+
+	PR tree-optimization/47276 
+	* ipa.c (function_and_variable_visibility): Do not try to mark alias
+	declarations as needed.
+
 2011-01-15  Martin Jambor  <mjambor@suse.cz>
 
 	* common.opt (fdevirtualize): New flag.

gcc/ipa.c

@@ -847,6 +847,8 @@ function_and_variable_visibility (bool whole_program)
       if ((node = cgraph_node_for_asm (p->target)) != NULL
 	  && !DECL_EXTERNAL (node->decl))
         {
+	  if (!node->analyzed)
+	    continue;
 	  /* Weakrefs alias symbols from other compilation unit.  In the case
 	     the destination of weakref became available because of LTO, we must
 	     mark it as needed.  */

gcc/testsuite/ChangeLog

+2011-01-13  Jan Hubicka  <jh@suse.cz>
+
+	PR tree-optimization/47276 
+	* gcc.dg/pr47276.c: New testcase.
+
 2011-01-15  Giovanni Funchal  <gafunchal@gmail.com>
 	    Jonathan Wakely  <jwakely.gcc@gmail.com>
 

gcc/testsuite/gcc.dg/pr47276.c

+/* { dg-do compile } */
+/* { dg-require-alias "" } */
+extern void syslog (int __pri, __const char *__fmt, ...)
+     __attribute__ ((__format__ (__printf__, 2, 3)));
+extern void vsyslog (int __pri, __const char *__fmt, int __ap)
+     __attribute__ ((__format__ (__printf__, 2, 0)));
+void
+__vsyslog(int pri, const char *fmt, int ap)
+{
+}
+void
+__syslog_chk(int pri, int flag, const char *fmt, ...)
+{
+}
+void
+__vsyslog_chk(int pri, int flag, const char *fmt, int ap)
+{
+}
+extern __typeof (__vsyslog_chk) __EI___vsyslog_chk __asm__("" "__vsyslog_chk"); extern __typeof (__vsyslog_chk) __EI___vsyslog_chk __attribute__((alias ("" "__GI___vsyslog_chk")));
+void
+__syslog(int pri, const char *fmt, ...)
+{
+}
+extern __typeof (__syslog) syslog __attribute__ ((alias ("__syslog")));
+extern __typeof (syslog) __EI_syslog __asm__("" "syslog"); extern __typeof (syslog) __EI_syslog __attribute__((alias ("" "__GI_syslog")));
+extern __typeof (__vsyslog) vsyslog __attribute__ ((alias ("__vsyslog")));
+extern __typeof (vsyslog) __EI_vsyslog __asm__("" "vsyslog"); extern __typeof (vsyslog) __EI_vsyslog __attribute__((alias ("" "__GI_vsyslog")));
+extern __typeof (syslog) syslog __asm__ ("" "__GI_syslog") __attribute__ ((visibility ("hidden")));
+extern __typeof (vsyslog) vsyslog __asm__ ("" "__GI_vsyslog") __attribute__ ((visibility ("hidden")));
+extern __typeof (__vsyslog_chk) __vsyslog_chk __asm__ ("" "__GI___vsyslog_chk") __attribute__ ((visibility ("hidden")));