[Bug tree-optimization/33107] [4.3 regression] segfault in garbage collector

[jakub at gcc dot gnu dot org]

------- Comment #4 from jakub at gcc dot gnu dot org  2007-09-05 14:03 -------
Given the backtrace I believe it is the same issue, particularly that
__builtin___strcpy_chk call was folded into __builtin_strcpy, set_rhs
copied over the annotations from the former to the latter CALL_EXPR, but
cgraph_edge still contained a pointer to the old CALL_EXPR.  When clearing
up annotations, delete_tree_cfg_annotations would ggc_free the annotation
from latter CALL_EXPR and later on during ggc_collect when marking the
cgraph_edge's call_stmt GC crashed, because we were trying to mark something
that has been already ggc_freed.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33107