Merge pull request #15898 from WalterBright/fix24274

fix Issue 24274 - [REG master] ImportC: unrecognized C initializer wi…

compiler/test/runnable/test24042.c

@@ -55,10 +55,75 @@ struct S3
 
 void test3()
 {
-    struct S3 tn = (struct S3) {{0}, 4};
+    struct S3 tn = (struct S3) {{1}, 4};
+    assert(tn.context[0] == 1);
+    assert(tn.context[1] == 0);
+    assert(tn.context[2] == 0);
+    assert(tn.context[3] == 0);
     assert(tn.id == 4);
 }
 
+/**************************************/
+// https://issues.dlang.org/show_bug.cgi?id=24274
+
+struct S0
+{
+    struct
+    {
+        char short_data[24];
+    };
+    int length;
+};
+
+void test4()
+{
+    struct S0 s0 = { {.short_data = {1}}, .length = 2};
+    assert(s0.short_data[0] == 1);
+    assert(s0.length == 2);
+}
+
+/**************************************/
+
+struct S1
+{
+    struct
+    {
+        int long_data;
+        char short_data[24];
+    };
+    int length;
+};
+
+void test5()
+{
+    struct S1 s1 = { {.short_data = {7}}, .length = 8};
+    assert(s1.long_data == 0);
+    assert(s1.short_data[0] == 7);
+    assert(s1.length == 8);
+}
+
+/**************************************/
+
+struct S6
+{
+    int abc[4];
+};
+
+void test6()
+{
+    struct S6 s = {{4},5,6,7};
+    assert(s.abc[0] == 4);
+    assert(s.abc[1] == 0);
+    assert(s.abc[2] == 0);
+    assert(s.abc[3] == 0);
+
+    struct S6 t = {4,{5},6,7};
+    assert(t.abc[0] == 4);
+    assert(t.abc[1] == 5);
+    assert(t.abc[2] == 6);
+    assert(t.abc[3] == 7);
+}
+
 /**************************************/
 
 int main()
@@ -66,5 +131,8 @@ int main()
     test1();
     test2();
     test3();
+    test4();
+    test5();
+    test6();
     return 0;
 }