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A pointer to a function of one type may be converted to a pointer to a function of another type and back again; the result shall compare equal to the original pointer. If a converted pointer is used to call a function whose type is not compatible with the referenced type, the behavior is undefined.
(See also undefined behavior 26 in Annex J of the C Standard.)
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#include <stdio.h>
#include <string.h>
char *(*fp)();
int main(void) {
const char *c;
fp = strchr;
c = fp('e', "Hello");
printf("%s\n", c);
return 0;
} |
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