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Drop checkpoint that leaded to use after free

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This commit is contained in:
Dmitry Stogov
2019-10-14 13:36:16 +03:00
parent 9257fa79be
commit 4273865bba
1 changed files with 0 additions and 3 deletions
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ext/opcache/Optimizer/zend_optimizer.c
-3
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@@ -1375,7 +1375,6 @@ int zend_optimize_script(zend_script *script, zend_long optimization_level, zend
(ZEND_OPTIMIZER_PASS_7 & optimization_level) &&
zend_build_call_graph(&ctx.arena, script, &call_graph) == SUCCESS) {
/* Optimize using call-graph */
void *checkpoint = zend_arena_checkpoint(ctx.arena);
int i;
zend_func_info *func_info;
@@ -1464,8 +1463,6 @@ int zend_optimize_script(zend_script *script, zend_long optimization_level, zend
for (i = 0; i < call_graph.op_arrays_count; i++) {
ZEND_SET_FUNC_INFO(call_graph.op_arrays[i], NULL);
}
zend_arena_release(&ctx.arena, checkpoint);
} else {
zend_optimize_op_array(&script->main_op_array, &ctx);