add clang

05/tcc-final/tests/tests2/82_attribs_position.c

@@ -0,0 +1,65 @@
+typedef unsigned short uint16_t;
+typedef unsigned char uint8_t;
+
+typedef union Unaligned16a {
+  uint16_t u;
+  uint8_t b[2];
+} __attribute__((packed)) Unaligned16a;
+
+typedef union __attribute__((packed)) Unaligned16b {
+  uint16_t u;
+  uint8_t b[2];
+} Unaligned16b;
+
+extern void foo (void) __attribute__((stdcall));
+void __attribute__((stdcall)) foo (void)
+{
+}
+
+#define __stdcall __attribute__((stdcall))
+extern int some_stdcall_func (int, int, int) __stdcall;
+__stdcall int __stdcall some_stdcall_func(int foo, int bar, int baz) {
+	//printf("Hello from stdcall: %i %i %i\n", foo, bar, baz);
+	return 43;
+}
+
+/* The actual attribute isn't important, must just be
+   parsable.  */
+#define ATTR __attribute__((__noinline__))
+int ATTR actual_function() {
+  return 42;
+}
+
+extern int printf (const char *, ...);
+static int globalvar;
+int main()
+{
+    void *function_pointer = &actual_function;
+    int localvar = 42, i;
+
+    int a = ((ATTR int(*) (void)) function_pointer)();
+    printf("%i\n", a);
+
+    /* In the following we once misparsed 'ATTR *' is a btype
+       and hence the whole type was garbled.  */
+    int b = ( (int(ATTR *)(void))  function_pointer)();
+    printf("%i\n", b);
+
+    /* All these should work and leave the stack pointer in its original
+       position.  */
+    some_stdcall_func(1, 10, 100);
+    ((int __stdcall (*)(int, int, int))some_stdcall_func) (2, 20, 200);
+    ((int(*__stdcall)(int, int, int))some_stdcall_func) (3, 30, 300);
+    for (i = 0; i < 1024; i++) {
+	globalvar = i;
+	/* This was once misparsed at <= gitrev 325241c0, forgetting
+	   the stdcall attribute on the function pointer leading to
+	   stack increment being done twice (in callee and caller).
+	   This will clobber 'i' and 'localvar' which is how we detect
+	   this.  */
+	((int(__stdcall*)(int, int, int))some_stdcall_func) (4, 40, 400);
+	if (localvar != 42 || globalvar != i)
+	  printf("error, localvar=%d i=%d globalvar=%d\n", localvar, i, globalvar);
+    }
+    return 0;
+}