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020d003c86
The _FORTIFY_SOURCE tests will be generated by a lua script to avoid a lot of redundancy in writing these tests. For each function that we're fortifying, the plan is to test at least the following three scenarios: - Writing up to one byte before the end of the buffer, - Writing up to the end of the buffer, - Writing one byte past the end of the buffer The buffer is shoved into a struct on the stack to guarantee a stack layout in which we have a valid byte after the buffer so that level 2 fortification will trip and we can have confidence that it wasn't some other stack/memory protection instead. The generated tests are divided roughly into which header we're attributing them to so that we can parallelize the build -- the full set is a bit over 9000 lines of C and takes 11s to build on the hardware that I'm testing on if it's a single monolothic file. Reviewed by: markj Sponsored by: Klara, Inc. Sponsored by: Stormshield Differential Revision: https://reviews.freebsd.org/D45678 |
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