From: Richard Guenther Date: Tue, 17 Feb 2009 13:38:06 +0000 (+0000) Subject: re PR tree-optimization/39207 (Strict aliasing warnings in libstdc++ headers) X-Git-Tag: releases/gcc-4.4.0~529 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a60b7ddb73647067ca6efbcc53802ffb596f93c1;p=thirdparty%2Fgcc.git re PR tree-optimization/39207 (Strict aliasing warnings in libstdc++ headers) 2009-02-17 Richard Guenther 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 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e30a66812ab4..d58002070a8a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2009-02-17 Richard Guenther + + 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 PR c/35446 diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c index 03f7a4ade65a..f9962b33a98d 100644 --- a/gcc/tree-ssa-structalias.c +++ b/gcc/tree-ssa-structalias.c @@ -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))