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strspn, strcspn, and strpbrk have bugs #50
Description
The current implementations of strspn, strcspn, and strpbrk appear to be incorrect and do not pass the following test cases:
char const * str = "abcdef";
char const * empty = "";
assert(strspn(str, empty) == 0);
assert(strpbrk(str, empty) == NULL);
assert(strcspn(str, empty) == 6);
assert(strcspn(str, "cba") == 0);
assert(strcspn(str, "fed") == 3);
assert(strcspn(str, "eebbeb") == 1);
assert(strcspn(str, "ffaafa") == 0);
assert(strcspn(empty, str) == 0);
assert(strcspn(empty, empty) == 0);These issues have already been documented here:
CE-Programming/toolchain#646
There are also corrected implementations available in the CE Programming toolchain.
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