diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | lib/areadlink-with-size.c | 7 |
2 files changed, 14 insertions, 0 deletions
@@ -1,3 +1,10 @@ +2019-07-05 Bruno Haible <bruno@clisp.org> + + areadlink-with-size: Don't return an excessive memory allocation. + Reported by Andreas Dilger <adilger@whamcloud.com>. + * lib/areadlink-with-size.c (areadlink_with_size): Shrink the buffer + before returning it. + 2019-07-03 Bruno Haible <bruno@clisp.org> renameatu: Fix test failure on MSVC. diff --git a/lib/areadlink-with-size.c b/lib/areadlink-with-size.c index eacad3f613..364cc08584 100644 --- a/lib/areadlink-with-size.c +++ b/lib/areadlink-with-size.c @@ -87,6 +87,13 @@ areadlink_with_size (char const *file, size_t size) if (link_length < buf_size) { buffer[link_length] = 0; + /* Shrink BUFFER before returning it. */ + if (link_length + 1 < buf_size) + { + char *shrinked_buffer = realloc (buffer, link_length + 1); + if (shrinked_buffer != NULL) + buffer = shrinked_buffer; + } return buffer; } |