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3b37e84422
This is usually harmless, but if you were very unlucky it could provoke a segfault due to the "to" string being right up against the end of memory. Found via valgrind testing (so we might've found it earlier, except that our regression tests lacked any exercise of translate()'s deletion feature). Fix by switching the order of the test-for-end-of-string and advance-pointer steps. While here, compute "to_ptr + tolen" just once. (Smarter compilers might figure that out for themselves, but let's just make sure.) Report and fix by Daniil Anisimov, in bug #17816. Discussion: https://postgr.es/m/17816-70f3d2764e88a108@postgresql.org |
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