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re PR debug/48703 (segfault in canonicalize_for_substitution)

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2011-04-21  Richard Guenther  <rguenther@suse.de>

	PR lto/48703
	* tree.c (free_lang_data_in_decl): Do not zero TREE_TYPE of
	DECL_NAME.

	* g++.dg/lto/pr48207-2_0.C: New testcase.
	* g++.dg/lto/pr48207-3_0.C: Likewise.

From-SVN: r172830
This commit is contained in:
Richard Guenther 2011-04-21 14:35:43 +00:00 committed by Richard Biener
parent 4d931f416b
commit aa2a43d2e8
5 changed files with 34 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-04-21 Richard Guenther <rguenther@suse.de>
PR lto/48703
* tree.c (free_lang_data_in_decl): Do not zero TREE_TYPE of
DECL_NAME.
2011-04-21 Eric Botcazou <ebotcazou@adacore.com>
* gimple.c (walk_gimple_op) <GIMPLE_CALL>: Fix couple of oversights.

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2011-04-21 Richard Guenther <rguenther@suse.de>
PR lto/48703
* g++.dg/lto/pr48207-2_0.C: New testcase.
* g++.dg/lto/pr48207-3_0.C: Likewise.
2011-04-21 Eric Botcazou <ebotcazou@adacore.com>
* gnat.dg/volatile5.adb: New test.

10
gcc/testsuite/g++.dg/lto/pr48207-2_0.C Normal file
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@ -0,0 +1,10 @@
// { dg-lto-do link }
// { dg-lto-options { { -flto -g } } }
namespace {
typedef struct {
int x;
} Foo;
}
int main () {}

12
gcc/testsuite/g++.dg/lto/pr48207-3_0.C Normal file
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@ -0,0 +1,12 @@
// { dg-lto-do link }
// { dg-lto-options { { -flto -g } } }
void bar(void) {}
void foo(void)
{
typedef enum { ABC } DEF;
bar();
}
int main () {}

4
gcc/tree.c
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@ -4561,10 +4561,6 @@ free_lang_data_in_decl (tree decl)
TREE_LANG_FLAG_5 (decl) = 0;
TREE_LANG_FLAG_6 (decl) = 0;
/* Identifiers need not have a type. */
if (DECL_NAME (decl))
TREE_TYPE (DECL_NAME (decl)) = NULL_TREE;
free_lang_data_in_one_sizepos (&DECL_SIZE (decl));
free_lang_data_in_one_sizepos (&DECL_SIZE_UNIT (decl));
if (TREE_CODE (decl) == FIELD_DECL)