Commit d4c41fe0dabe2d1539763c899f879cc1e391750a
2017-03-18T12:56:36
TurboJPEG: Fix potential memory leaks Referring to https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=746, it seems that the values of local buffer pointers in TurboJPEG API functions aren't always preserved if longjmp() returns control to a point prior to the allocation of the local buffers. This is known to be an issue with GCC 4.x and clang with -O1 and higher optimization levels but not with GCC 5.x and later. It is unknown why GCC 5.x and 6.x do not suffer from the issue, but possibly the local buffer pointers are not allocated on the stack when using those more recent compilers. In any case, this commit modifies the TurboJPEG API library code such that the jump buffer is always updated after any local buffer pointers are allocated but before any subsequent libjpeg API functions are called.