feat: support null pointer in initializer

2 files changed, 7 insertions, 0 deletions

diff --git a/src/parse.c b/src/parse.c
index 9083ecc..b1a1d9b 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -2830,6 +2830,10 @@ static void do_eval_init_expr(InitData* buf, AstNode* expr, Type* ty) {
             initdata_append_addr(buf, expr->as.ref_expr->operand->as.gvar->name);
         } else if (expr->kind == AstNodeKind_gvar) {
             initdata_append_addr(buf, expr->as.gvar->name);
+        } else if (expr->kind == AstNodeKind_func) {
+            initdata_append_addr(buf, expr->as.func->name);
+        } else if (expr->kind == AstNodeKind_int_expr && expr->as.int_expr->value == 0) {
+            initdata_append_zeros(buf, type_sizeof(ty));
         } else {
             unimplemented();
         }
diff --git a/tests/variables.c b/tests/variables.c
index 2ba28d1..e6a0b3a 100644
--- a/tests/variables.c
+++ b/tests/variables.c
@@ -1,4 +1,5 @@
 #include <helpers.h>
+#include <stddef.h>
 
 int printf(const char*, ...);
 
@@ -33,6 +34,7 @@ struct S2 {
 struct S2 arr5[] = {
     {"foo"},
     {"bar"},
+    {NULL},
 };
 
 int main() {
@@ -74,6 +76,7 @@ int main() {
 
     ASSERT_EQ_STR("foo", arr5[0].x);
     ASSERT_EQ_STR("bar", arr5[1].x);
+    ASSERT_EQ(NULL, arr5[2].x);
 
     // local variables
     int foo;