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Restrict OP_EPOP operand to 1; ref #3789

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2017-09-05 21:11:41 +09:00
parent 3acaa44a70
commit 7f4b57bb20
1 changed files with 10 additions and 0 deletions
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mrbgems/mruby-compiler/core/codegen.c
+10
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@@ -279,10 +279,20 @@ genop_peep(codegen_scope *s, mrb_code i, int val)
}
break;
case OP_EPOP:
#if 1
if (GETARG_A(i) > 1) {
int j, len = GETARG_A(i), n;
for (j=0; j<len; j++) {
n = genop(s, MKOP_A(OP_EPOP, 1));
}
return n;
}
#else
if (c0 == OP_EPOP) {
s->iseq[s->pc-1] = MKOP_A(OP_EPOP, GETARG_A(i0)+GETARG_A(i));
return 0;
}
#endif
break;
case OP_POPERR:
if (c0 == OP_POPERR) {