DISPATCH-1262: fix GCC 8.2 format-truncation error in router/src/main.c #448
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Gcc warns because `getcwd` on Linux may allocate and return new buffer, so don't ignore the returned value. And cur_path may in theory be null going in if previous `calloc` failed. It is unlikely we would end up with cur_path = NULL as parameter to `%s` in a formatting string later below, but it is possible, given very careful timing and sufficiently malicious user, I think. Change is made to silence GCC warning, so that ``-fsanitize=undefined` compiles.
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@ganeshmurthy thanks for looking into this |
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Oct 13, 2022
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Gcc warns because
getcwdon Linux may allocate and return new buffer,so don't ignore the returned value. And cur_path may in theory be null
going in if previous
callocfailed.It is unlikely we would end up with cur_path = NULL as parameter to
%sin a formatting string later below, but it is possible, given very
careful timing and sufficiently malicious user, I think.
Change is made to silence GCC warning, so that ``-fsanitize=undefined` compiles.