musl - musl - an implementation of the standard library for Linux-based systems

diff --git a/src/stdio/fopen.c b/src/stdio/fopen.c
index 084cc73c..0d5b1af2 100644
--- a/src/stdio/fopen.c
+++ b/src/stdio/fopen.c

@@ -5,7 +5,6 @@ FILE *fopen(const char *filename, const char *mode)

FILE *f;

int fd;

int flags;

- int plus = !!strchr(mode, '+');

/* Check for valid initial mode character */

if (!strchr("rwa", *mode)) {

@@ -14,9 +13,10 @@ FILE *fopen(const char *filename, const char *mode)

}

/* Compute the flags to pass to open() */

- if (plus) flags = O_RDWR;

+ if (strchr(mode, '+')) flags = O_RDWR;

else if (*mode == 'r') flags = O_RDONLY;

else flags = O_WRONLY;

+ if (strchr(mode, 'x')) flags |= O_EXCL;

if (*mode != 'r') flags |= O_CREAT;

if (*mode == 'w') flags |= O_TRUNC;

if (*mode == 'a') flags |= O_APPEND;