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Merge branch 'PHP-7.1'

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* PHP-7.1:
  Prevent optimization of huge functions.
This commit is contained in:
Dmitry Stogov
2016-09-16 14:03:56 +03:00
parent 3c2de0a534 846441ab4b
commit a05cdd03ff
1 changed files with 5 additions and 0 deletions
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5
ext/opcache/Optimizer/zend_ssa.c
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@@ -846,6 +846,11 @@ int zend_build_ssa(zend_arena **arena, const zend_script *script, const zend_op_
ALLOCA_FLAG(dfg_use_heap)
ALLOCA_FLAG(var_use_heap)
if ((blocks_count * (op_array->last_var + op_array->T)) > 4 * 1024 * 1024) {
/* Don't buld SSA for very big functions */
return FAILURE;
}
ssa->rt_constants = (build_flags & ZEND_RT_CONSTANTS);
ssa_blocks = zend_arena_calloc(arena, blocks_count, sizeof(zend_ssa_block));
if (!ssa_blocks) {