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| author | Daniel Stenberg <daniel@haxx.se> | 2019-12-15 12:33:24 +0100 |
|---|---|---|
| committer | Daniel Stenberg <daniel@haxx.se> | 2019-12-15 18:19:01 +0100 |
| commit | 38797e8811a9249d0ce988d664c89802b6235f2d (patch) | |
| tree | fdd922cfea3cbca7813fd8f60e364ef4d427577a /tests/libtest | |
| parent | 571f2c81d10e9093b4eb91b3714f640af4c9eab1 (diff) | |
| download | curl-38797e8811a9249d0ce988d664c89802b6235f2d.tar.gz | |
lib1591: free memory properly on OOM, in the trailers callback
Detected by torture tests.
Closes #4720
Diffstat (limited to 'tests/libtest')
| -rw-r--r-- | tests/libtest/lib1591.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/tests/libtest/lib1591.c b/tests/libtest/lib1591.c index f0c6b4cb7..cc1c5b228 100644 --- a/tests/libtest/lib1591.c +++ b/tests/libtest/lib1591.c @@ -5,7 +5,7 @@ * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * - * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al. + * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms @@ -50,12 +50,25 @@ static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream) return amount; } +/* + * carefully not leak memory on OOM + */ static int trailers_callback(struct curl_slist **list, void *userdata) { + struct curl_slist *nlist = NULL; + struct curl_slist *nlist2 = NULL; (void)userdata; - *list = curl_slist_append(*list, "my-super-awesome-trailer: trail1"); - *list = curl_slist_append(*list, "my-other-awesome-trailer: trail2"); - return CURL_TRAILERFUNC_OK; + nlist = curl_slist_append(*list, "my-super-awesome-trailer: trail1"); + if(nlist) + nlist2 = curl_slist_append(nlist, "my-other-awesome-trailer: trail2"); + if(nlist2) { + *list = nlist2; + return CURL_TRAILERFUNC_OK; + } + else { + curl_slist_free_all(nlist); + return CURL_TRAILERFUNC_ABORT; + } } int test(char *URL) |