fix constraint violation in ftw

[musl] / src / linux / err.c

diff --git a/src/linux/err.c b/src/linux/err.c
index abc2680..0f74853 100644 (file)
--- a/src/linux/err.c
+++ b/src/linux/err.c
@@ -5,23 +5,23 @@
 
 void vwarn(const char *fmt, va_list ap)
 {
-       vfprintf(stderr, fmt, ap);
+       if (fmt) vfprintf(stderr, fmt, ap);
        perror("");
 }
 
 void vwarnx(const char *fmt, va_list ap)
 {
-       vfprintf(stderr, fmt, ap);
+       if (fmt) vfprintf(stderr, fmt, ap);
        putc('\n', stderr);
 }
 
-void verr(int status, const char *fmt, va_list ap)
+_Noreturn void verr(int status, const char *fmt, va_list ap)
 {
        vwarn(fmt, ap);
        exit(status);
 }
 
-void verrx(int status, const char *fmt, va_list ap)
+_Noreturn void verrx(int status, const char *fmt, va_list ap)
 {
        vwarnx(fmt, ap);
        exit(status);
@@ -43,7 +43,7 @@ void warnx(const char *fmt, ...)
        va_end(ap);
 }
 
-void err(int status, const char *fmt, ...)
+_Noreturn void err(int status, const char *fmt, ...)
 {
        va_list ap;
        va_start(ap, fmt);
@@ -51,7 +51,7 @@ void err(int status, const char *fmt, ...)
        va_end(ap);
 }
 
-void errx(int status, const char *fmt, ...)
+_Noreturn void errx(int status, const char *fmt, ...)
 {
        va_list ap;
        va_start(ap, fmt);