admin/mruby-mruby
1
0
Fork 0
mirror of https://github.com/mruby/mruby synced 2026-06-08 16:11:16 +00:00
Code Issues Packages Projects Releases Wiki Activity

codegen.c: should not loop_push() before constant folding.

Browse Source 
Otherwise, the following code will crash:

```ruby
1.times{{}until 1; break}
```
This commit is contained in:
Yukihiro "Matz" Matsumoto
2021-09-26 16:58:40 +09:00
parent 89ea41f15e
commit 368e8ce3d5
1 changed files with 6 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mrbgems/mruby-compiler/core/codegen.c
+6 -5
View File
@@ -2263,11 +2263,6 @@ codegen(codegen_scope *s, node *tree, int val)
case NODE_WHILE:
case NODE_UNTIL:
{
struct loopinfo *lp = loop_push(s, LOOP_NORMAL);
uint32_t pos = JMPLINK_START;
if (!val) lp->reg = -1;
lp->pc0 = new_label(s);
if (true_always(tree->car)) {
if (nt == NODE_UNTIL) {
if (val) {
@@ -2286,6 +2281,12 @@ codegen(codegen_scope *s, node *tree, int val)
goto exit;
}
}
uint32_t pos = JMPLINK_START;
struct loopinfo *lp = loop_push(s, LOOP_NORMAL);
if (!val) lp->reg = -1;
lp->pc0 = new_label(s);
codegen(s, tree->car, VAL);
pop();
if (nt == NODE_WHILE) {