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/* Check if array arguments of ObjC methods are decayed to pointer types
in a proper fashion:
(1) The _encodings_ for the array arguments should remain to be '[4i]' and
such, since this has been the case since at least gcc 3.3.
(2) However, when building the static C functions out of ObjC method signatures,
we need to decay the arrays into pointers (as C does).
(3) If array size is not known (e.g., 'int a[]'), then the type shall be
encoded as a pointer. */
/* Contributed by Alexander Malmberg <alexander@malmberg.org> */
#include "../objc-obj-c++-shared/TestsuiteObject.m"
#include "../objc-obj-c++-shared/runtime.h"
#include <stdlib.h>
#include <stdio.h>
#define CHECK_IF(expr) if(!(expr)) abort()
@interface Test : TestsuiteObject
{ float j; }
-(void) test2: (int [5])a with: (int [])b;
-(id) test3: (Test **)b; /* { dg-message "previous declaration of .\\-\\(id\\)test3:\\(Test \\*\\*\\)b." } */
@end
@implementation Test
-(void) test2: (int [5])a with: (int [])b
{
a[3] = *b;
}
-(void) test3: (Test [3][4])b { /* { dg-warning "conflicting types for .\\-\\(void\\)test3:\\(Test \\\[3\\\]\\\[4\\\]\\)b." } */
}
@end
int bb[6] = { 0, 1, 2, 3, 4, 5 };
int *b = bb;
Test *cc[4];
Test **c = cc;
int offs1, offs2, offs3, offs4, offs5, offs6;
int main(int argc, char **argv)
{
Class testClass = objc_getClass("Test");
Method meth;
cc[0] = [Test new];
CHECK_IF (bb[3] == 3);
[*c test2: b with: bb + 4];
CHECK_IF (bb[3] == 4);
bb[3] = 0;
[*c test2: bb with: bb + 5];
CHECK_IF (bb[3] == 5);
meth = class_getInstanceMethod(testClass, @selector(test2:with:));
offs1 = offs2 = offs3 = offs4 = offs5 = offs6 = -1;
sscanf(method_getTypeEncoding(meth), "v%d@%d:%d[%di]%d^i%d", &offs1, &offs2, &offs3,
&offs4, &offs5, &offs6);
CHECK_IF (!offs2 && offs4 == 5 && offs3 > 0);
CHECK_IF (offs5 == 2 * offs3 && offs6 == 3 * offs3 && offs1 == 4 * offs3);
meth = class_getInstanceMethod(testClass, @selector(test3:));
offs1 = offs2 = offs3 = offs4 = offs5 = offs6 = -1;
sscanf(method_getTypeEncoding(meth), "v%d@%d:%d[%d[%d{Test=#f}]]%d", &offs1, &offs2, &offs3,
&offs4, &offs5, &offs6);
CHECK_IF (!offs2 && offs4 == 3 && offs5 == 4 && offs3 > 0);
CHECK_IF (offs6 == 2 * offs3 && offs1 == 3 * offs3);
return 0;
}
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