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| author | Cristian Cadar <c.cadar@imperial.ac.uk> | 2017-08-09 15:15:31 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-08-09 15:15:31 +0100 |
| commit | 64c67386a3c5eb4baa23847d737fd812312117f9 (patch) | |
| tree | 3bed8782c2f634eaf0d2b53cdfe3ce8db34f5c3e /test/Feature | |
| parent | fff6485e2f3ec82b6cb31e1f5038adef09be7eed (diff) | |
| parent | 966c8102a7b851f5199ea6ff4d83ea1472913a7f (diff) | |
| download | klee-64c67386a3c5eb4baa23847d737fd812312117f9.tar.gz | |
Merge pull request #742 from ccadar/fold
Added checks for div/mod by zero and overshifts in constant expressio…
Diffstat (limited to 'test/Feature')
| -rw-r--r-- | test/Feature/ConstExprWithDivZero.ll | 18 | ||||
| -rw-r--r-- | test/Feature/ConstExprWithOvershift.ll | 16 |
2 files changed, 34 insertions, 0 deletions
diff --git a/test/Feature/ConstExprWithDivZero.ll b/test/Feature/ConstExprWithDivZero.ll new file mode 100644 index 00000000..f430dad9 --- /dev/null +++ b/test/Feature/ConstExprWithDivZero.ll @@ -0,0 +1,18 @@ +; REQUIRES: llvm-3.4 +; RUN: llvm-as %s -f -o %t.bc +; RUN: rm -rf %t.klee-out +; RUN: not %klee --output-dir=%t.klee-out %t.bc 2> %t.log +; RUN: FileCheck --input-file %t.log %s + +; See https://github.com/klee/klee/issues/268 + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-pc-linux-gnu" + +@a = internal global i32 0, align 4 +@b = internal global [1 x i32] [i32 1], align 4 + +define i32 @main() { +; CHECK: Division/modulo by zero during constant folding + ret i32 trunc (i64 sdiv (i64 2036854775807, i64 sext (i32 select (i1 icmp eq (i32* getelementptr inbounds ([1 x i32]* @b, i64 0, i64 0), i32* @a), i32 1, i32 0) to i64)) to i32) +} diff --git a/test/Feature/ConstExprWithOvershift.ll b/test/Feature/ConstExprWithOvershift.ll new file mode 100644 index 00000000..7d4a1284 --- /dev/null +++ b/test/Feature/ConstExprWithOvershift.ll @@ -0,0 +1,16 @@ +; REQUIRES: llvm-3.4 +; RUN: llvm-as %s -f -o %t.bc +; RUN: rm -rf %t.klee-out +; RUN: not %klee --output-dir=%t.klee-out %t.bc 2> %t.log +; RUN: FileCheck --input-file %t.log %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-pc-linux-gnu" + +@a = internal global i32 0, align 4 +@b = internal global [1 x i32] [i32 1], align 4 + +define i32 @main() { +; CHECK: Overshift during constant folding + ret i32 ashr (i32 zext (i1 icmp ne (i32* getelementptr inbounds ([1 x i32]* @b, i64 0, i64 0), i32* @a) to i32), i32 trunc (i64 add (i64 zext (i1 icmp ne (i32* getelementptr inbounds ([1 x i32]* @b, i64 0, i64 0), i32* @a) to i64), i64 31) to i32)) +} |