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* diff: fix integer overflow problem with --tabsizePaul Eggert2014-10-271-0/+14
Reported by Tobias Stoeckmann in: http://bugs.gnu.org/18857 * src/diff.c (main): Don't overflow if INTMAX_MAX / 2 < tabsize. * tests/bignum: New file, to test for this bug. * tests/Makefile.am (TESTS): Add it.