I'm testing the following to avoid ICEing when using LTO and
mismatched -g vs. -g0 during compile/link phase by not conditionally
clearing things in free_lang_data_in_decl.
(Similar code is in free_lang_data_in_type, but without a testcase
I don't want to remove it)
LTO bootstrap and regtest running on x86_64-unknown-linux-gnu.
Richard.
2011-12-09 Richard Guenther <rguent...@suse.de>
PR lto/48042
* tree.c (free_lang_data_in_decl): Remove freeing conditional
on debuginfo level.
* g++.dg/lto/pr48042_0.C: New testcase.
Index: gcc/tree.c
===================================================================
--- gcc/tree.c (revision 182154)
+++ gcc/tree.c (working copy)
@@ -4600,11 +4591,6 @@ free_lang_data_in_decl (tree decl)
if (TREE_CODE (decl) == FIELD_DECL)
free_lang_data_in_one_sizepos (&DECL_FIELD_OFFSET (decl));
- /* DECL_FCONTEXT is only used for debug info generation. */
- if (TREE_CODE (decl) == FIELD_DECL
- && debug_info_level < DINFO_LEVEL_TERSE)
- DECL_FCONTEXT (decl) = NULL_TREE;
-
if (TREE_CODE (decl) == FUNCTION_DECL)
{
if (gimple_has_body_p (decl))
Index: gcc/testsuite/g++.dg/lto/pr48042_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/pr48042_0.C (revision 0)
+++ gcc/testsuite/g++.dg/lto/pr48042_0.C (revision 0)
@@ -0,0 +1,14 @@
+// { dg-lto-do link }
+// { dg-extra-ld-options "-r -nostdlib -g" }
+
+class A {
+ virtual int x() = 0;
+};
+
+class B:public A {
+ int x();
+};
+
+int B::x() {
+}
+
