Sema: fix using runtime instructions inside typeof in comptime only blocks

Closes #13210
Follow up to 3ccd4907fbcd04ecddffb618a4b14581fd080279

1 files changed, 7 insertions, 1 deletions

diff --git a/src/Sema.zig b/src/Sema.zig
index 8945bc6bed..76e7e779e7 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -6433,7 +6433,7 @@ fn analyzeInlineCallArg(
                     .ty = param_ty,
                     .val = arg_val,
                 };
-            } else if ((try sema.resolveMaybeUndefVal(arg_block, arg_src, casted_arg) == null) or
+            } else if (((try sema.resolveMaybeUndefVal(arg_block, arg_src, casted_arg)) == null) or
                 try sema.typeRequiresComptime(param_ty) or zir_tags[inst] == .param_comptime)
             {
                 try sema.inst_map.putNoClobber(sema.gpa, inst, casted_arg);
@@ -14521,6 +14521,12 @@ fn zirClosureGet(
         return sema.failWithOwnedErrorMsg(msg);
     }
 
+    if (tv.val.tag() == .unreachable_value) {
+        assert(block.is_typeof);
+        // We need a dummy runtime instruction with the correct type.
+        return block.addTy(.alloc, tv.ty);
+    }
+
     return sema.addConstant(tv.ty, tv.val);
 }