stat()'s behaviour is undefined if the first argument is NULL and might be prone to segfault. Add an additional check to skip the stat() invocation if no destfile is used. Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de> --- lib/libalpm/dload.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/lib/libalpm/dload.c b/lib/libalpm/dload.c index 5a63e48..731d807 100644 --- a/lib/libalpm/dload.c +++ b/lib/libalpm/dload.c @@ -260,7 +260,7 @@ static int curl_download_internal(struct dload_payload *payload, curl_easy_setopt(handle->curl, CURLOPT_USERAGENT, useragent); } - if(!payload->allow_resume && !payload->force && stat(destfile, &st) == 0) { + if(!payload->allow_resume && !payload->force && destfile && stat(destfile, &st) == 0) { /* start from scratch, but only download if our local is out of date. */ curl_easy_setopt(handle->curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE); curl_easy_setopt(handle->curl, CURLOPT_TIMEVALUE, (long)st.st_mtime); -- 1.7.6