add clang

05/tcc-final/tests/tests2/125_atomic_misc.c

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+#include <stdatomic.h>
+int printf(const char*,...);
+
+#if defined test_atomic_compare_exchange
+int main()
+{
+    _Atomic int a = 12;
+    int b = 77;
+    int r;
+
+    atomic_store(&a, b + 0);
+    r = atomic_compare_exchange_strong(&a, &b, 99);
+    printf("%d %d %d\n", r, a, b);
+
+    atomic_store(&a, b + 3);
+    r = atomic_compare_exchange_strong(&a, &b, 99);
+    printf("%d %d %d\n", r, a, b);
+
+    return 0;
+}
+
+#elif defined test_atomic_store
+int main()
+{
+    int _Atomic i;
+    int r;
+    atomic_store(&i, 12);
+    r = atomic_fetch_add(&i, i);
+    printf("r = %d, i = %d\n", r, i);
+}
+
+#elif defined test_atomic_store_pointer
+typedef struct { char c[4]; } c4;
+int main()
+{
+    int i = 1;
+    int _Atomic *p = &i;
+    int k = 2;
+    atomic_store(&p, &k);
+    printf("*p = %d\n", *p);
+}
+
+#elif defined test_atomic_store_struct
+typedef struct { char c[4]; } c4;
+int main()
+{
+    c4 _Atomic p;
+    c4 v = { 1,2,3,4 };
+    atomic_store(&p, v);
+    printf("%d %d %d %d\n", p.c[0], p.c[1], p.c[2], p.c[3]);
+}
+
+#elif defined test_atomic_error_1
+int main()
+{
+    int _Atomic i;
+    atomic_load(i);
+}
+
+#elif defined test_atomic_error_2
+int main()
+{
+    struct { char c[3]; } _Atomic c3;
+    atomic_load(&c3);
+}
+
+#elif defined test_atomic_error_3
+int main()
+{
+    _Atomic int *p = 0;
+    atomic_fetch_add(&p, 1);
+}
+
+#elif defined test_atomic_error_4
+int main()
+{
+    int _Atomic i = 1;
+    char c = 2;
+    atomic_compare_exchange_strong(&i, &c, 0);
+}
+
+#elif defined test_atomic_warn_1
+int main()
+{
+    size_t _Atomic i = 1;
+    /* assignment to integer from pointer */
+    atomic_store(&i, &i);
+}
+
+#elif defined test_atomic_warn_2
+int main()
+{
+    int i = 1;
+    char c = 2;
+    int _Atomic *p = &i;
+    /* assignment from incompatible pointer */
+    atomic_store(&p, &c);
+}
+
+#elif defined test_atomic_warn_3
+int main()
+{
+    int const i = 1;
+    /* assignment to read-only -location */
+    atomic_fetch_add(&i, 2);
+}
+
+#endif