Gracefully handle EOF while parsing files.

libXpm does not properly handle EOF conditions when xpmGetC is called
multiple times in a row to construct a string. Instead of checking
its return value for EOF, the result is automatically casted into a
char and attached to a string.

By carefully crafting the color table in an XPM file, it is possible to
send a libXpm program like gimp into a very long lasting loop and
massive memory allocations.

Otherwise no memory issues arise, therefore this is just a purely
functional patch to dismiss invalid input.

Signed-off-by: Matthieu Herrb <matthieu@herrb.eu>
Reviewed-by: Matthieu Herrb <Matthieu@herrb.eu>

0 files changed, 0 insertions, 0 deletions