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| author | Dan Liew <daniel.liew@imperial.ac.uk> | 2013-11-07 14:45:22 +0000 |
|---|---|---|
| committer | Dan Liew <daniel.liew@imperial.ac.uk> | 2014-02-14 18:29:28 +0000 |
| commit | 71048bea167794f109b2f0b715b6cc1ba8b6eab9 (patch) | |
| tree | d610b541607462e9f465ef2ee0e4d257b48491f1 /test | |
| parent | 207d3aff50cc4bed2adf12819a96fc4254a3d6e6 (diff) | |
| download | klee-71048bea167794f109b2f0b715b6cc1ba8b6eab9.tar.gz | |
Fixed overshift of logical right shift by symbolic so that it overshifts
to zero. Test case is included.
Diffstat (limited to 'test')
| -rw-r--r-- | test/Solver/overshift-lright-by-symbolic.kquery | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/Solver/overshift-lright-by-symbolic.kquery b/test/Solver/overshift-lright-by-symbolic.kquery new file mode 100644 index 00000000..7ca6d4d5 --- /dev/null +++ b/test/Solver/overshift-lright-by-symbolic.kquery @@ -0,0 +1,26 @@ +# RUN: %kleaver %s > %t +# RUN: not grep INVALID %t + +array shift[4] : w32 -> w8 = symbolic +# ∀ x. x >= 32 → ( (2 >> x) = 0 ) +# Check we logical right overshift to zero when shifting a constant ALWAYS! + +(query [ (Ule (w32 32) (ReadLSB w32 (w32 0) shift)) ] + (Eq + (LShr w32 (w32 2) + (ReadLSB w32 (w32 0) shift) + ) + (w32 0) + ) [ ] [shift] ) + +# 64-bit version +# ∀ x. x >= 64 → ( (2 >> x) = 0 ) +array shift64[8] : w32 -> w8 = symbolic + +(query [ (Ule (w64 64) (ReadLSB w64 (w32 0) shift64)) ] + (Eq + (LShr w64 (w64 2) + (ReadLSB w64 (w32 0) shift64) + ) + (w64 0) + ) [ ] [shift64] ) |