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Set errno in strtol family of functions (#110)

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Alison Winters 2021-03-07 14:18:08 -08:00 • committed by GitHub
parent b16b332539
commit f5da4efcaf
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6 changed files with 57 additions and 13 deletions
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13
libc/fmt/strtol.c
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@ -17,6 +17,7 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/fmt/conv.h"
#include "libc/errno.h"
#include "libc/limits.h"
/**
@ -25,5 +26,15 @@
* @param optional_base is recommended as 0 for flexidecimal
*/
long strtol(const char *s, char **opt_out_end, int optional_base) {
return strtoimax(s, opt_out_end, optional_base);
intmax_t res;
res = strtoimax(s, opt_out_end, optional_base);
if (res < LONG_MIN) {
errno = ERANGE;
return LONG_MIN;
}
if (res > LONG_MAX) {
errno = ERANGE;
return LONG_MAX;
}
return res;
}