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author | Bruno Haible <bruno@clisp.org> | 2019-07-06 00:40:34 +0200 |
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committer | Bruno Haible <bruno@clisp.org> | 2019-07-06 00:40:34 +0200 |
commit | 8f91b5cf3514d664289afaace0d6f832b9608f20 (patch) | |
tree | 138a2f6c8ae9889da4571cb1422dd59bd5e428c0 /lib/areadlinkat-with-size.c | |
parent | eb76defb19b3cc01e12d77d8cc96d402b9b5097d (diff) | |
download | gnulib-8f91b5cf3514d664289afaace0d6f832b9608f20.tar.gz |
areadlinkat-with-size: Don't return an excessive memory allocation.
* lib/areadlinkat-with-size.c (areadlinkat_with_size): Shrink the buffer
before returning it.
Diffstat (limited to 'lib/areadlinkat-with-size.c')
-rw-r--r-- | lib/areadlinkat-with-size.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/areadlinkat-with-size.c b/lib/areadlinkat-with-size.c index ed00b98e4d..5b2bccc4a5 100644 --- a/lib/areadlinkat-with-size.c +++ b/lib/areadlinkat-with-size.c @@ -92,6 +92,13 @@ areadlinkat_with_size (int fd, 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; } |