diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/tree-ssanames.c | 7 |
2 files changed, 12 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7d44816..a8e0c18 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2007-01-16 Jan Hubicka <jh@suse.cz> + * tree-ssanames.c (release_dead_ssa_names): Instead of ggc_freeing + the names, just unlink the chain so we don't crash on dangling pointers + to dead SSA names. + +2007-01-16 Jan Hubicka <jh@suse.cz> + * cgraph.h (cgraph_decide_inlining_incrementally): Kill. * tree-pass.h: Reorder to make IPA passes appear toegher. (pass_early_inline, pass_inline_parameters, pass_apply_inline): Declare. diff --git a/gcc/tree-ssanames.c b/gcc/tree-ssanames.c index d9ab940..07b83f8 100644 --- a/gcc/tree-ssanames.c +++ b/gcc/tree-ssanames.c @@ -325,7 +325,12 @@ release_dead_ssa_names (void) for (t = FREE_SSANAMES (cfun); t; t = next) { next = TREE_CHAIN (t); - ggc_free (t); + /* Dangling pointers might make GGC to still see dead SSA names, so it is + important to unlink the list and avoid GGC from seeing all subsequent + SSA names. In longer run we want to have all dangling pointers here + removed (since they usually go trhough dead statements that consume + considerable amounts of memory). */ + TREE_CHAIN (t) = NULL_TREE; n++; } FREE_SSANAMES (cfun) = NULL; |