Commit 837cc467f7

@@ -119,7 +119,7 @@ static void ir_ref_bb(IrBasicBlock *bb) {
 static void ir_ref_instruction(IrInstruction *instruction, IrBasicBlock *cur_bb) {
     assert(instruction->id != IrInstructionIdInvalid);
     instruction->ref_count += 1;
-    if (instruction->owner_bb != cur_bb)
+    if (instruction->owner_bb != cur_bb && !instr_is_comptime(instruction))
         ir_ref_bb(instruction->owner_bb);
 }
 
@@ -3112,12 +3112,10 @@ static IrInstruction *ir_gen_bin_op_id(IrBuilder *irb, Scope *scope, AstNode *no
 
 static IrInstruction *ir_gen_assign(IrBuilder *irb, Scope *scope, AstNode *node) {
     IrInstruction *lvalue = ir_gen_node_extra(irb, node->data.bin_op_expr.op1, scope, LValPurposeAssign);
-    if (lvalue == irb->codegen->invalid_instruction)
-        return lvalue;
-
     IrInstruction *rvalue = ir_gen_node(irb, node->data.bin_op_expr.op2, scope);
-    if (rvalue == irb->codegen->invalid_instruction)
-        return rvalue;
+
+    if (lvalue == irb->codegen->invalid_instruction || rvalue == irb->codegen->invalid_instruction)
+        return irb->codegen->invalid_instruction;
 
     ir_build_store_ptr(irb, scope, node, lvalue, rvalue);
     return ir_build_const_void(irb, scope, node);

@@ -808,16 +808,29 @@ fn f() {
 }
     )SOURCE", 1, ".tmp_source.zig:3:6: error: invalid token: 'const'");
 
-    add_compile_fail_case("array access errors", R"SOURCE(
+    add_compile_fail_case("array access of undeclared identifier", R"SOURCE(
 fn f() {
-    var bad : bool = undefined;
     i[i] = i[i];
+}
+    )SOURCE", 2, ".tmp_source.zig:3:5: error: use of undeclared identifier 'i'",
+                 ".tmp_source.zig:3:12: error: use of undeclared identifier 'i'");
+
+    add_compile_fail_case("array access of non array", R"SOURCE(
+fn f() {
+    var bad : bool = undefined;
     bad[bad] = bad[bad];
 }
-    )SOURCE", 4, ".tmp_source.zig:4:5: error: use of undeclared identifier 'i'",
-                 ".tmp_source.zig:4:7: error: use of undeclared identifier 'i'",
-                 ".tmp_source.zig:5:8: error: array access of non-array",
-                 ".tmp_source.zig:5:9: error: expected type 'usize', found 'bool'");
+    )SOURCE", 2, ".tmp_source.zig:4:8: error: array access of non-array type 'bool'",
+                 ".tmp_source.zig:4:19: error: array access of non-array type 'bool'");
+
+    add_compile_fail_case("array access with non integer index", R"SOURCE(
+fn f() {
+    var array = "aoeu";
+    var bad = false;
+    array[bad] = array[bad];
+}
+    )SOURCE", 2, ".tmp_source.zig:5:11: error: expected type 'usize', found 'bool'",
+                 ".tmp_source.zig:5:24: error: expected type 'usize', found 'bool'");
 
     add_compile_fail_case("variadic functions only allowed in extern", R"SOURCE(
 fn f(...) {}