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| author | Justin Lebar <jlebar@google.com> | 2016-07-17 18:19:23 +0000 |
|---|---|---|
| committer | Justin Lebar <jlebar@google.com> | 2016-07-17 18:19:23 +0000 |
| commit | ab549c818751e5eef980173d5baa3c0ebaf449d8 (patch) | |
| tree | 86aa935e136f15f048f3ae55612a1d332e87a300 /llvm/unittests/Support/MathExtrasTest.cpp | |
| parent | cbba3c4aefe92e5d2f6aa2b7fe8062e47fc28b57 (diff) | |
| download | llvm-ab549c818751e5eef980173d5baa3c0ebaf449d8.zip llvm-ab549c818751e5eef980173d5baa3c0ebaf449d8.tar.gz llvm-ab549c818751e5eef980173d5baa3c0ebaf449d8.tar.bz2 | |
Add assertions checking SignExtend{32,64}'s bit width.
Summary:
The bit width must be greater than zero, otherwise we shift by the
integer's width, which is UB. Also (more obviously) the width must be
less than or equal to the integer's width, otherwise we shift by a
negative number, which is also UB.
Reviewers: rnk
Subscribers: llvm-commits, dylanmckay
Differential Revision: https://reviews.llvm.org/D22442
llvm-svn: 275720
Diffstat (limited to 'llvm/unittests/Support/MathExtrasTest.cpp')
0 files changed, 0 insertions, 0 deletions