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8278f7865a
These are tokens that follow the syntax for a preprocessing number, but not for an integer or floating constant after preprocessing. They are now allowed within the preprocessing phases of the compiler. They are not legal after preprocessing, but they may be used as operands of the # and ## preprocessor operators to produce legal tokens.
37 lines
1020 B
C
37 lines
1020 B
C
/*
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* Test handling of preprocessing numbers.
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*
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* Most of this applies to C89, but hex float and long long are specific to
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* C99 and later.
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*/
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#include <stdio.h>
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#include <string.h>
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#define COMBINE3(a,b,c) a##b##c
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#define STRINGIZE(x) #x
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int main(void) {
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if (COMBINE3(123,.,456) != 123.456)
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goto Fail;
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if (COMBINE3(1.,08,999999999999999999999999999999999)
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!= 1.08999999999999999999999999999999999)
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goto Fail;
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if (COMBINE3(0x,AB,09) != 0xAB09)
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goto Fail;
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if (strcmp(STRINGIZE(.1xyzp+), ".1xyzp+") != 0)
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goto Fail;
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if (strcmp(STRINGIZE(0xaBcD), "0xaBcD") != 0)
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goto Fail;
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if (strcmp(STRINGIZE(089ae-.), "089ae-.") != 0)
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goto Fail;
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if (sizeof(COMBINE3(123,L,L)) < sizeof(long long))
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goto Fail;
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printf ("Passed Conformance Test c99ppnum\n");
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return 0;
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Fail:
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printf ("Failed Conformance Test c99ppnum\n");
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}
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