add clang

05/tcc-final/tests/tests2/96_nodata_wanted.c

@@ -0,0 +1,102 @@
+/*****************************************************************************/
+/* test 'nodata_wanted' data output suppression */
+
+#if defined test_static_data_error
+void foo() {
+    if (1) {
+	static short w = (int)&foo; /* initializer not computable */
+    }
+}
+
+#elif defined test_static_nodata_error
+void foo() {
+    if (0) {
+	static short w = (int)&foo; /* initializer not computable */
+    }
+}
+
+#elif defined test_global_data_error
+void foo();
+static short w = (int)&foo; /* initializer not computable */
+
+
+#elif defined test_local_data_noerror
+void foo() {
+    short w = &foo; /* 2 cast warnings */
+}
+
+#elif defined test_data_suppression_off || defined test_data_suppression_on
+
+#if defined test_data_suppression_on
+# define SKIP 1
+#else
+# define SKIP 0
+#endif
+
+#include <stdio.h>
+/* some gcc headers #define __attribute__ to empty if it's not gcc */
+#undef __attribute__
+
+int main()
+{
+    __label__ ts0, te0, ts1, te1;
+    int tl, dl;
+
+    static const char ds0 = 0;
+    static const char de0 = 0;
+    /* get reference size of empty jmp */
+ts0:;
+    if (!SKIP) {}
+te0:;
+    dl = -(&de0 - &ds0);
+    tl = -(&&te0 - &&ts0);
+
+    /* test data and code suppression */
+    static const char ds1 = 0;
+ts1:;
+    if (!SKIP) {
+        void *p = (void*)&main;
+        char cc[] = "static string";
+        double d = 8.0;
+        struct
+#ifndef __arm__
+        __attribute__((packed))
+#endif
+        {
+            unsigned x : 12;
+            unsigned char y : 7;
+            unsigned z : 28, a: 4, b: 5;
+        } s = { 0x333,0x44,0x555555,6,7 };
+
+        printf("data:\n");
+        printf("  %d - %.1f - %.1f - %s - %s\n",
+            sizeof 8.0, 8.0, d, __FUNCTION__, cc);
+        printf("  %x %x %x %x %x\n",
+            s.x, s.y, s.z, s.a, s.b);
+    }
+te1:;
+    static const char de1 = 0;
+
+    dl += &de1 - &ds1;
+    tl += &&te1 - &&ts1;
+    printf("size of data/text:\n  %s/%s\n",
+        dl ? "non-zero":"zero", tl ? "non-zero":"zero");
+    /*printf("# %d/%d\n", dl, tl);*/
+}
+
+#elif defined test_static_data
+
+#include <stdio.h>
+int main(int argc, char **argv)
+{
+    goto there;
+    if (0) {
+        static int a = 1;
+        printf("hello\n"); /* the "hello\n" string is still suppressed */
+there:
+        printf("a = %d\n", a);
+    }
+    return 0;
+}
+
+#endif