Re: [Libguestfs] [PATCH] daemon: Remove use of fixed-size stack buffers.

GCC 7 complains that the fixed size buffers are not large enough (at least in theory) when using ‘-O3 -mtune=broadwell’. --- daemon/devsparts.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/daemon/devsparts.c b/daemon/devsparts.c index 584e7d8b8..eac79197e 100644 --- a/daemon/devsparts.c +++ b/daemon/devsparts.c @@ -125,13 +125,16 @@ foreach_block_device (block_dev_func_t func, bool return_md) static int add_device (const char *device, struct stringsbuf *r) { - char dev_path[256]; - snprintf (dev_path, sizeof dev_path, "/dev/%s", device); + CLEANUP_FREE char *dev_path;

- if (add_string (r, dev_path) == -1) { + if (asprintf (&dev_path, "/dev/%s", device) == -1) { + reply_with_perror ("asprintf"); return -1; } + if (add_string (r, dev_path) == -1) + return -1;

+ return 0; } @@ -153,10 +156,13 @@ do_list_devices (void) static int add_partitions (const char *device, struct stringsbuf *r) { - char devdir[256]; + CLEANUP_FREE char *devdir;