diff options
Diffstat (limited to 'libc/sysdeps/linux/common/setgroups.c')
| -rw-r--r-- | libc/sysdeps/linux/common/setgroups.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/libc/sysdeps/linux/common/setgroups.c b/libc/sysdeps/linux/common/setgroups.c index 3d2102f9d..49d85156f 100644 --- a/libc/sysdeps/linux/common/setgroups.c +++ b/libc/sysdeps/linux/common/setgroups.c @@ -26,11 +26,13 @@ ret_error: return -1; } else { size_t i; - __kernel_gid_t *kernel_groups; + __kernel_gid_t *kernel_groups = NULL; - kernel_groups = (__kernel_gid_t *)malloc(sizeof(*kernel_groups) * size); - if (kernel_groups == NULL) - goto ret_error; + if (size) { + kernel_groups = (__kernel_gid_t *)malloc(sizeof(*kernel_groups) * size); + if (kernel_groups == NULL) + goto ret_error; + } for (i = 0; i < size; i++) { kernel_groups[i] = (groups)[i]; @@ -40,7 +42,8 @@ ret_error: } i = __syscall_setgroups(size, kernel_groups); - free(kernel_groups); + if (kernel_groups) + free(kernel_groups); return i; } } |