Fix null pointer arithmetic UB in libregexp #136
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This is a patch I originally wrote for the Kiesel JS engine: https://codeberg.org/kiesel-js/kiesel/src/branch/main/patches/libregexp.patch
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What regex did you use to trigger the bug? |
saghul
approved these changes
Nov 25, 2023
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I don't remember, sorry. I think it popped up while running test262, crashing the runner with SIGILL. |
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FWIW we are not seeing crashes when running teat262. @bnoordhuis thoughts? |
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Yes, this was specific to using libregexp within my own engine (most likely because that uses LLVM via the zig toolchain) :) When I first investigated this someone suggested running an UBSAN-enabled build, feel free to check that way. |
bnoordhuis
approved these changes
Nov 29, 2023
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Closes #127.