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61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* Tests for predefined macro __COUNTER__ */
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#include <stdio.h>
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static int failures = 0;
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#if __COUNTER__ /* 0 */
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# error __COUNTER__ should begin at 0!
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#elif __COUNTER__ == 1 /* 1 */
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# define CONCAT(a,b) CONCAT_impl_(a,b)
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# define CONCAT_impl_(a,b) a##b
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#endif
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#line 42 "What is the answer?"
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int CONCAT(ident,__COUNTER__)[0+__LINE__] = {__LINE__}, CONCAT(ident,__COUNTER__)[0+__LINE__] = {__LINE__}; /* 2,3 */
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#if __COUNTER__ == 4 ? 1 || __COUNTER__ : 0 && __COUNTER__ /* 4,5,6 */
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_Static_assert(__COUNTER__ == 7, "__COUNTER__ should be 7 here!"); /* 7 */
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# define GET_COUNTER() __COUNTER__
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# define GET_LINE() __LINE__
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# warning __COUNTER__ in #warning is just output as text and will never increase!
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#else
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# if __COUNTER__ + __COUNTER__ + __COUNTER__ /* Skipped as a whole and not incrementing */
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# endif
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# error __COUNTER__ is skipped along with the whole #error line and will never increase anyways! */
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#endif
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#include "counter.h"
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#include "counter.h"
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_Static_assert(GET_COUNTER() == 10, "__COUNTER__ should be 10 here!"); /* 10 */
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int main(void)
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{
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if (ident2[0] != 42) {
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printf("Expected ident2[0]: %s, got: %s\n", 42, ident2[0]);
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++failures;
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}
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if (ident3[0] != 42) {
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printf("Expected ident3[0]: %s, got: %s\n", 42, ident3[0]);
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++failures;
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}
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if (ident8 != 8) {
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printf("Expected ident8: %s, got: %s\n", 8, ident8);
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++failures;
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}
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if (ident9 != 9) {
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printf("Expected ident9: %s, got: %s\n", 9, ident9);
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++failures;
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}
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if (failures != 0) {
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printf("Failures: %d\n", failures);
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}
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return failures;
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}
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