re PR debug/48207 (ICE in lhd_set_decl_assembler_name, at langhooks.c:158)

2011-04-19  Richard Guenther  <rguenther@suse.de>

	PR lto/48207
	* tree.c (free_lang_data): Do not reset the decl-assembler-name
	langhook.

	* g++.dg/lto/pr48207_0.C: New testcase.

From-SVN: r172708

gcc/ChangeLog

+2011-04-19  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/48207
+	* tree.c (free_lang_data): Do not reset the decl-assembler-name
+	langhook.
+
 2011-04-19  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* tree-inline.c (expand_call_inline): Do not issue a -Winline warning

gcc/testsuite/ChangeLog

+2011-04-19  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/48207
+	* g++.dg/lto/pr48207_0.C: New testcase.
+
 2011-04-18  Jason Merrill  <jason@redhat.com>
 
 	* g++.dg/init/void1.C: New.

gcc/testsuite/g++.dg/lto/pr48207_0.C

+// { dg-lto-do link }
+// { dg-lto-options { { -flto -g } } }
+
+void bar(int) {}
+
+void foo(void)
+{
+  typedef enum { ABC } DEF;
+  DEF a;
+  bar((int)a);
+}
+
+int main() {}

gcc/tree.c

@@ -5176,7 +5176,12 @@ free_lang_data (void)
   lang_hooks.callgraph.analyze_expr = NULL;
   lang_hooks.dwarf_name = lhd_dwarf_name;
   lang_hooks.decl_printable_name = gimple_decl_printable_name;
-  lang_hooks.set_decl_assembler_name = lhd_set_decl_assembler_name;
+  /* We do not want the default decl_assembler_name implementation,
+     rather if we have fixed everything we want a wrapper around it
+     asserting that all non-local symbols already got their assembler
+     name and only produce assembler names for local symbols.  Or rather
+     make sure we never call decl_assembler_name on local symbols and
+     devise a separate, middle-end private scheme for it.  */
 
   /* Reset diagnostic machinery.  */
   diagnostic_starter (global_dc) = default_tree_diagnostic_starter;