Integrate more chibicc changes

third_party/chibicc/test/hog_test.c

@@ -1,4 +0,0 @@
-main(void) {
-  void *p;
-  p = "hello";
-}

third_party/chibicc/test/initializer_test.c

@@ -445,6 +445,15 @@ int main() {
            };
            x.a;
          }));
+  ASSERT(1, ({
+           union {
+             int a;
+             char b;
+           } x = {
+               1,
+           };
+           x.a;
+         }));
   ASSERT(2, ({
            enum {
              x,

third_party/chibicc/test/struct_test.c

@@ -392,6 +392,24 @@ int main() {
            } x = {1}, y = {2};
            (0 ? x : y).a;
          }));
+  ASSERT(2, ({
+           struct {
+             int a;
+           } x = {1}, y = {2};
+           (x = y).a;
+         }));
+  ASSERT(1, ({
+           struct {
+             int a;
+           } x = {1}, y = {2};
+           (1 ? x : y).a;
+         }));
+  ASSERT(2, ({
+           struct {
+             int a;
+           } x = {1}, y = {2};
+           (0 ? x : y).a;
+         }));
 
   return 0;
 }