Commit a483e38df62f73dc0cdadee6faf3e083094210d4 | zig

author	Timon Kruiper <timonkruiper@gmail.com> 2021-04-07 13:27:36+02:00
committer	Timon Kruiper <timonkruiper@gmail.com> 2021-04-08 14:23:18+02:00
log	a483e38df62f73dc0cdadee6faf3e083094210d4
tree	3c8625290a8c74acc122f0a0a15e1764c15918fb
parent	ac14b52e85f857f7f70846d22ea18ea265acb91a

stage2: fix bug where invalid ZIR was generated

The following code caused an assertion to be hit:
```
pub fn main() void {
    var e: anyerror!c_int = error.Foo;
    const i = e catch 69;
    assert(69 - i == 0);
}
```

1 files changed, 3 insertions(+), 2 deletions(-)

src
- Module.zig

src/Module.zig+3-2

 @@ -2863,8 +2863,9 @@ fn astgenAndSemaFn(
         _ = try AstGen.expr(&gen_scope, params_scope, .none, body_node);
-        if (gen_scope.instructions.items.len == 0 or
+        const inst_tags = astgen.instructions.items(.tag);
-            !astgen.instructions.items(.tag)[gen_scope.instructions.items.len - 1]
+        if (inst_tags.len == 0 or
+            !inst_tags[inst_tags.len - 1]
             .isNoReturn())
         {
             // astgen uses result location semantics to coerce return operands.