diff options
Diffstat (limited to 'com32/lib/strerror.c')
| -rw-r--r-- | com32/lib/strerror.c | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/com32/lib/strerror.c b/com32/lib/strerror.c index 8dbe74ad..1b3d4452 100644 --- a/com32/lib/strerror.c +++ b/com32/lib/strerror.c @@ -6,18 +6,26 @@ char *strerror(int errnum) { - static char message[32] = "error "; /* enough for error 2^63-1 */ + static char message[32] = "error "; /* enough for error 2^63-1 */ + char numbuf[32]; + char *p; + unsigned int e = (unsigned int)errnum; - char numbuf[32]; - char *p; + extern const int sys_nerr; + extern const char *const sys_errlist[]; - p = numbuf + sizeof numbuf; - *--p = '\0'; + if (e < (unsigned int)sys_nerr && sys_errlist[e]) + return (char *)sys_errlist[e]; - do { - *--p = (errnum % 10) + '0'; - errnum /= 10; - } while (errnum); + p = numbuf + sizeof numbuf; + *--p = '\0'; - return (char *)memcpy(message + 6, p, (numbuf + sizeof numbuf) - p); + do { + *--p = (e % 10) + '0'; + e /= 10; + } while (e); + + memcpy(message + 6, p, (numbuf + sizeof numbuf) - p); + + return message; } |