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102d6873a3
This was non-standard in various ways, mainly in regard to pointer types. It has been rewritten to closely follow the specification in the C standards. Several helper functions dealing with types have been introduced. They are currently only used for ? :, but they might also be useful for other purposes. New tests are also introduced to check the behavior for the ? : operator. This fixes #35 (including the initializer-specific case).
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/*
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* Test the ? : operator.
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*
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* The basic properties tested should hold back to C89,
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* but a C11 feature (_Generic) is used to test them.
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*/
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#define assert_type(e,t) (void)_Generic((e), t:(e))
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int main(void) {
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int i = 1;
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long l = 2;
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double d = 3;
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struct S {int i;} s = {4};
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const struct S t = {5};
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const void *cvp = &i;
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void *vp = &i;
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const int *cip = &i;
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volatile int *vip = 0;
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int *ip = &i;
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const char *ccp = 0;
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int (*fp1)() = 0;
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int (*fp2)(int (*)[40]) = 0;
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int (*fp3)(int (*)[]) = 0;
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assert_type(1?i:l, long);
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assert_type(1?d:i, double);
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assert_type(1?s:t, struct S);
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1?(void)2:(void)3;
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assert_type(1?ip:ip, int *);
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assert_type(1?ip:cip, const int *);
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assert_type(1?cip:ip, const int *);
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assert_type(1?0:ip, int *);
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assert_type(0?0LL:ip, int *);
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assert_type(1?(void*)0:ip, int *);
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assert_type(1?cip:0, const int *);
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assert_type(1?cip:0LL, const int *);
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assert_type(1?cip:(char)0.0, const int *);
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assert_type(1?cip:(void*)0, const int *);
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assert_type(1?(void*)(void*)0:ip, void *);
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assert_type(1?(void*)ip:ip, void *);
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assert_type(1?cip:(void*)(void*)0, const void *);
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assert_type(1?(void*)ip:cip, const void *);
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assert_type(1?main:main, int(*)(void));
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assert_type(1?main:0, int(*)(void));
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assert_type(1?(const void*)cip:(void*)ip, const void *);
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assert_type(1?cvp:cip, const void *);
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assert_type(1?vip:0, volatile int *);
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assert_type(1?cip:vip, const volatile int *);
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assert_type(1?vp:ccp, const void *);
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assert_type(1?ip:cip, const int *);
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assert_type(1?vp:ip, void *);
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assert_type(1?fp1:fp2, int (*)(int (*)[40]));
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assert_type(1?fp2:fp3, int (*)(int (*)[40]));
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assert_type(1?fp2:0, int (*)(int (*)[40]));
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assert_type(1?fp2:(void*)0, int (*)(int (*)[40]));
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}
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