DCMTK

DCMTK's image scaling routine causes segmentation faults in certain situations on MacOS X ARM.
The segmentation fault EXC_BAD_ACCESS (SIGSEGV) is caused by an access to an invalid or out-of-bounds address in memory, in the following method:

DiScaleTemplate<unsigned char>::interpolatePixel(unsigned char const**, unsigned char**)

Notes:

• The error only occurs in a Release build (which uses the -O3 flag). It does not occur in a Debug build or a "ReleaseWithDebInfo" build (which uses -O2 -g).
• The error only occurs if interpolation algorithm 1 (--interpolate 1) is used, which is the default.

Build environment:

• Apple clang version 15.0.0 (clang-1500.0.40.1)
• Target: arm64-apple-darwin22.5.0

The issue can be reproduced with the following command line and the sample file provided here:

dcmscale -v --scale-x-size 800 smpte.dcm output.dcm