Disable block pass for large functions

(Backport of 7ea261685f179a7cddcc4196fc7f3f12572c3d49 to 7.0.)

diff --git a/ext/opcache/Optimizer/block_pass.c b/ext/opcache/Optimizer/block_pass.c
index f69199b24e45299481c55739981ab2420ae23c29..413b8b10e2cb582f83495fa19dca4609c6461ef9 100644 (file)
--- a/ext/opcache/Optimizer/block_pass.c
+++ b/ext/opcache/Optimizer/block_pass.c
@@ -2000,6 +2000,10 @@ void optimize_cfg(zend_op_array *op_array, zend_optimizer_ctx *ctx)
                return;
        }
 
+       if ((uint64_t) op_array->last * (op_array->last_var + op_array->T) > 512 * 1024 * 1024) {
+               return;
+       }
+
     /* Build CFG */
        checkpoint = zend_arena_checkpoint(ctx->arena);
        if (!find_code_blocks(op_array, &cfg, ctx)) {