Use proper buffer size in tt_user.c's digit_suffix #582
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Modern Ubuntu (e.g. GitHub Actions' `ubuntu-latest`), among other distros, compiles with `-D_FORTIFY_SOURCE=3` which does neat things like checking `strlcpy` won't overflow. `tt_user_s` has a `char digit_suffix[3+1]`, so when attempting to `strlcpy` into it with length 5, this triggers a buffer overflow error for safety reasons (even though the source string only has length 4) Let's instead pass a size to `digit_suffix` and use that.
doismellburning
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Jul 19, 2025
Incorporates the digit_suffix buffer length fix from wb2osz/direwolf#582 to avoid buffer overflow assertions when running with -D_FORTIFY_SOURCE=3
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Note that this was found by running the test in tt_user.c - I think it would probably be good if this were run automatically |
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Modern Ubuntu (e.g. GitHub Actions'
ubuntu-latest), among other distros, compiles with-D_FORTIFY_SOURCE=3which does neat things like checkingstrlcpywon't overflow.tt_user_shas achar digit_suffix[3+1], so when attempting tostrlcpyinto it with length 5, this triggers a buffer overflow error for safety reasons (even though the source string only has length 4)Let's instead pass a size to
digit_suffixand use that.