| commit | 0227130244c007870c106fc613903d078730e45c | [log] [tgz] |
|---|---|---|
| author | Johannes Schindelin <Johannes.Schindelin@gmx.de> | Thu Jan 12 01:05:02 2023 +0100 |
| committer | Junio C Hamano <gitster@pobox.com> | Thu Jan 19 13:38:06 2023 -0800 |
| tree | bac9f94312dc3c99af326b75e0d07a82e86a9c29 | |
| parent | b7b37a33711e64bf580ef3141878b12a36e28833 [diff] |
attr: adjust a mismatched data type On platforms where `size_t` does not have the same width as `unsigned long`, passing a pointer to the former when a pointer to the latter is expected can lead to problems. Windows and 32-bit Linux are among the affected platforms. In this instance, we want to store the size of the blob that was read in that variable. However, `read_blob_data_from_index()` passes that pointer to `read_object_file()` which expects an `unsigned long *`. Which means that on affected platforms, the variable is not fully populated and part of its value is left uninitialized. (On Big-Endian platforms, this problem would be even worse.) The consequence is that depending on the uninitialized memory's contents, we may erroneously reject perfectly fine attributes. Let's address this by passing a pointer to a variable of the expected data type. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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