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re PR tree-optimization/39207 (Strict aliasing warnings in libstdc++ headers)

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2009-02-17  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/39207
	* tree-ssa-structalias.c (find_what_p_points_to): Do not emit
	strict-aliasing warnings for pointers pointing to NULL.

From-SVN: r144228
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Richard Guenther 2009-02-17 13:38:06 +00:00 • committed by Richard Biener
parent 723a3aa22c
commit a60b7ddb73
2 changed files with 7 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2009-02-17 Richard Guenther <rguenther@suse.de>
PR tree-optimization/39207
* tree-ssa-structalias.c (find_what_p_points_to): Do not emit
strict-aliasing warnings for pointers pointing to NULL.
2009-02-16 Joseph Myers <joseph@codesourcery.com>
PR c/35446

1
gcc/tree-ssa-structalias.c
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@ -4935,6 +4935,7 @@ find_what_p_points_to (tree p)
{
pi->pt_vars = NULL;
if (pruned > 0
&& !pi->pt_null
&& pi->is_dereferenced
&& warn_strict_aliasing > 0
&& !SSA_NAME_IS_DEFAULT_DEF (p))