tree 88b56e2c1d37fff01244cdf3059586be801ed5cd
parent 66d88508dd31831664b234ec59e6a5e2d0095a10
author Mike <Mango@Live.cn> 1656518700 +0800
committer GitHub <noreply@github.com> 1656518700 -0400
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Fix segfault in `SpirvTools::Disassemble` when printing (#4833)

When the `SPV_BINARY_TO_TEXT_OPTION_PRINT` option is specified, `spvtext` will not be created (see https://github.com/KhronosGroup/SPIRV-Tools/blob/37d2396cabe56b29d37551ea55d0d745d5748ded/source/disassemble.cpp#L117), and the attempt to dereference into its members (`spvtext->str` and `spvtext->length`) results in segmentation fault.

This is fixed by first checking if `spvtext` is nulll.

Co-authored-by: Steven Perron <stevenperron@google.com>