From 2092bc7fe8a1cb188acf6248764173c1ccbb9040 Mon Sep 17 00:00:00 2001 From: "Yukihiro \"Matz\" Matsumoto" Date: Tue, 3 Aug 2021 15:57:01 +0900 Subject: codegen.c: avoid division by zero in constant folding. --- mrbgems/mruby-compiler/core/codegen.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mrbgems/mruby-compiler/core/codegen.c b/mrbgems/mruby-compiler/core/codegen.c index 467b70e1b..0a0620589 100644 --- a/mrbgems/mruby-compiler/core/codegen.c +++ b/mrbgems/mruby-compiler/core/codegen.c @@ -784,7 +784,7 @@ gen_muldiv(codegen_scope *s, uint8_t op, uint16_t dst) goto normal; } struct mrb_insn_data data0 = mrb_decode_insn(mrb_prev_pc(s, data.addr)); - if (!get_int_operand(s, &data0, &n0)) { + if (!get_int_operand(s, &data0, &n0) || n == 0) { goto normal; } if (op == OP_MUL) { -- cgit v1.2.3