From a743d7072d9ccf11f96e3df45f25ad07da6ad9d6 Mon Sep 17 00:00:00 2001 From: Cristian Cadar Date: Tue, 10 Feb 2015 13:29:11 +0000 Subject: Merged @luckyluke's change for detecting overflow of unsigned add, sub and mul operations. Refactored tests into two main cases, and disabled them on LLVM 2.9, which does not support -fsanitized=*signed-integer-overflow. --- test/Feature/ubsan_unsigned_overflow.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 test/Feature/ubsan_unsigned_overflow.c (limited to 'test/Feature/ubsan_unsigned_overflow.c') diff --git a/test/Feature/ubsan_unsigned_overflow.c b/test/Feature/ubsan_unsigned_overflow.c new file mode 100644 index 00000000..82eacdd7 --- /dev/null +++ b/test/Feature/ubsan_unsigned_overflow.c @@ -0,0 +1,29 @@ +// RUN: %llvmgcc %s -fsanitize=unsigned-integer-overflow -emit-llvm -g -O0 -c -o %t.bc +// RUN: rm -rf %t.klee-out +// RUN: %klee --output-dir=%t.klee-out %t.bc 2>&1 | FileCheck %s + +// llvm-gcc 2.9 does not support -fsanitize=unsigned-integer-overflow +// REQUIRES: not-llvm-2.9 + +#include "klee/klee.h" + +int main() +{ + unsigned int x; + unsigned int y; + volatile unsigned int result; + + klee_make_symbolic(&x, sizeof(x), "x"); + klee_make_symbolic(&y, sizeof(y), "y"); + + // CHECK: ubsan_unsigned_overflow.c:20: overflow on unsigned addition + result = x + y; + + // CHECK: ubsan_unsigned_overflow.c:23: overflow on unsigned subtraction + result = x - y; + + // CHECK: ubsan_unsigned_overflow.c:26: overflow on unsigned multiplication + result = x * y; + + return 0; +} -- cgit 1.4.1