diff options
| -rw-r--r-- | usr/src/lib/libc/port/gen/err.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/usr/src/lib/libc/port/gen/err.c b/usr/src/lib/libc/port/gen/err.c index 7f13435b97..7af600f48f 100644 --- a/usr/src/lib/libc/port/gen/err.c +++ b/usr/src/lib/libc/port/gen/err.c @@ -54,16 +54,20 @@ static const char *progname; static void warncore(FILE *fp, const char *fmt, va_list args) { + const char *execname; + flockfile(fp); if (progname == NULL) { - progname = strrchr(getexecname(), '/'); - if (progname == NULL) - progname = getexecname(); - else + execname = getexecname(); + if ((execname != NULL) && + ((progname = strrchr(execname, '/')) != NULL)) progname++; + else + progname = execname; } - (void) fprintf(fp, "%s: ", progname); + if (progname != NULL) + (void) fprintf(fp, "%s: ", progname); if (fmt != NULL) { (void) vfprintf(fp, fmt, args); |