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authorMark H Weaver <mhw@netris.org>2018-10-14 05:29:52 -0400
committerAndy Wingo <wingo@pobox.com>2019-05-23 16:09:45 +0200
commit00973cbd2efe192b86f4e2363fccae5b75b09b3f (patch)
tree83f40356a45416f80089d3aa48692161a4eca88e /libguile/debug-malloc.c
parente6100f64bbab1b2bac085c0ea5250163197df4a9 (diff)
downloadguile-00973cbd2efe192b86f4e2363fccae5b75b09b3f.tar.gz
In 'ash' and 'round-ash', handle right shift count of LONG_MIN.
Fixes <https://bugs.gnu.org/21901>. Reported by Zefram <zefram@fysh.org>. * libguile/numbers.c: Add another top-level 'verify' to ensure that LONG_MIN is not a fixnum. (scm_ash, scm_round_ash): Ensure that when the shift count is LONG_MIN, it is not handled via the normal code path, to avoid signed overflow when the shift count is negated. * test-suite/tests/numbers.test: Add tests.
Diffstat (limited to 'libguile/debug-malloc.c')
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