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-rw-r--r--libc/sysdeps/linux/common/sendfile.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/sendfile.c b/libc/sysdeps/linux/common/sendfile.c
index def98da46..af05ba4e7 100644
--- a/libc/sysdeps/linux/common/sendfile.c
+++ b/libc/sysdeps/linux/common/sendfile.c
@@ -40,7 +40,7 @@ ssize_t sendfile(int out_fd, int in_fd, __off_t *offset, size_t count)
return -1;
}
- if ((int)offset < 0) {
+ if (offset == NULL || (int)offset < 0) {
__set_errno(EFAULT);
return -1;
}