[Git][wine/wine][master] windowscodecs: Fix off-by-one check in IcoDecoder_GetFrame.

[Alexandre Julliard (＠julliard)]

Alexandre Julliard pushed to branch master at wine / wine

Commits:
93d9c4c8 by chenzhengyong at 2025-11-04T22:56:33+01:00
windowscodecs: Fix off-by-one check in IcoDecoder_GetFrame.

The frame index should be strictly less than idCount.
Previously, an index equal to idCount was not rejected,
leading to an out-of-range access.

Adjusted the returned error code to match Windows behavior
and added corresponding test cases.

Signed-off-by: chenzhengyong

- - - - -

2 changed files:

- dlls/windowscodecs/icoformat.c
- dlls/windowscodecs/tests/icoformat.c

View it on GitLab: https://gitlab.winehq.org/wine/wine/-/commit/93d9c4c8370ae7e54d5e6a389673bb7...