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jeremybenn |
/* Test warnings for assignments and comparisons between ObjC and C types. */
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/* Author: Nicola Pero <nicola@brainstorm.co.uk>. */
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/* { dg-do compile } */
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#include <objc/objc.h>
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/* The NeXT runtime headers do not define NULL. */
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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@protocol MyProtocol
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- (void) method;
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@end
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@interface MyClass
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@end
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int main()
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{
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id obj = nil;
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id <MyProtocol> obj_p = nil;
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MyClass *obj_c = nil;
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Class obj_C = Nil;
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int i = 0;
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int *j = NULL;
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/* These should all generate warnings. */
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obj = i; /* { dg-warning "pointer from integer without a cast" } */
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obj = j; /* { dg-warning "incompatible pointer type" } */
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obj_p = i; /* { dg-warning "pointer from integer without a cast" } */
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obj_p = j; /* { dg-warning "incompatible pointer type" } */
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obj_c = i; /* { dg-warning "pointer from integer without a cast" } */
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obj_c = j; /* { dg-warning "incompatible pointer type" } */
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obj_C = i; /* { dg-warning "pointer from integer without a cast" } */
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obj_C = j; /* { dg-warning "incompatible pointer type" } */
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i = obj; /* { dg-warning "integer from pointer without a cast" } */
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i = obj_p; /* { dg-warning "integer from pointer without a cast" } */
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i = obj_c; /* { dg-warning "integer from pointer without a cast" } */
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i = obj_C; /* { dg-warning "integer from pointer without a cast" } */
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j = obj; /* { dg-warning "incompatible pointer type" } */
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j = obj_p; /* { dg-warning "incompatible pointer type" } */
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j = obj_c; /* { dg-warning "incompatible pointer type" } */
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j = obj_C; /* { dg-warning "incompatible pointer type" } */
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if (obj == i) ; /* { dg-warning "comparison between pointer and integer" } */
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if (i == obj) ; /* { dg-warning "comparison between pointer and integer" } */
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if (obj == j) ; /* { dg-warning "lacks a cast" } */
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if (j == obj) ; /* { dg-warning "lacks a cast" } */
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if (obj_c == i) ; /*{ dg-warning "comparison between pointer and integer" }*/
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if (i == obj_c) ; /*{ dg-warning "comparison between pointer and integer" }*/
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if (obj_c == j) ; /* { dg-warning "lacks a cast" } */
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if (j == obj_c) ; /* { dg-warning "lacks a cast" } */
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if (obj_p == i) ; /*{ dg-warning "comparison between pointer and integer" }*/
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if (i == obj_p) ; /*{ dg-warning "comparison between pointer and integer" }*/
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if (obj_p == j) ; /* { dg-warning "lacks a cast" } */
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if (j == obj_p) ; /* { dg-warning "lacks a cast" } */
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if (obj_C == i) ; /*{ dg-warning "comparison between pointer and integer" }*/
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if (i == obj_C) ; /*{ dg-warning "comparison between pointer and integer" }*/
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if (obj_C == j) ; /* { dg-warning "lacks a cast" } */
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if (j == obj_C) ; /* { dg-warning "lacks a cast" } */
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return 0;
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}
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