re PR lto/42392 ([LTO] ICE with top level asm)

2009-12-16  Richard Guenther  <rguenther@suse.de>

	PR lto/42392
	* langhooks.c (lhd_begin_section): Make sure to switch back
	to the text section, not some random one.

	* gcc.dg/lto/20091216-1_0.c: New testcase.

From-SVN: r155298

gcc/ChangeLog

+2009-12-16  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/42392
+	* langhooks.c (lhd_begin_section): Make sure to switch back
+	to the text section, not some random one.
+
 2009-12-16  Jakub Jelinek  <jakub@redhat.com>
 
 	* tree-chrec.c (chrec_convert_1): Only fold (T2)(t +- x) to

gcc/langhooks.c

@@ -604,6 +604,8 @@ lhd_begin_section (const char *name)
   /* Save the old section so we can restore it in lto_end_asm_section.  */
   gcc_assert (!saved_section);
   saved_section = in_section;
+  if (!saved_section)
+    saved_section = text_section;
 
   /* Create a new section and switch to it.  */
   section = get_section (name, SECTION_DEBUG, NULL);

gcc/testsuite/ChangeLog

+2009-12-16  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/42392
+	* gcc.dg/lto/20091216-1_0.c: New testcase.
+
 2009-12-15  Jason Merrill  <jason@redhat.com>
 
 	PR c++/42387

gcc/testsuite/gcc.dg/lto/20091216-1_0.c

+/* { dg-lto-do run } */
+
+asm (".globl start; start: nop");
+
+int
+main ()
+{
+  return 0;
+}