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[msan] Lit tests for __attribute__((no_sanitize_memory)). 

llvm-svn: 176248
This commit is contained in:
Evgeniy Stepanov 2013-02-28 11:25:54 +00:00
parent 00062b4498
commit 218c582cb5
2 changed files with 67 additions and 0 deletions
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34
compiler-rt/lib/msan/lit_tests/no_sanitize_memory.cc Normal file
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// RUN: %clangxx_msan -m64 -O0 %s -o %t && %t >%t.out 2>&1
// RUN: %clangxx_msan -m64 -O1 %s -o %t && %t >%t.out 2>&1
// RUN: %clangxx_msan -m64 -O2 %s -o %t && %t >%t.out 2>&1
// RUN: %clangxx_msan -m64 -O3 %s -o %t && %t >%t.out 2>&1
// RUN: %clangxx_msan -m64 -O0 %s -o %t -DCHECK_IN_F && %t >%t.out 2>&1
// RUN: %clangxx_msan -m64 -O1 %s -o %t -DCHECK_IN_F && %t >%t.out 2>&1
// RUN: %clangxx_msan -m64 -O2 %s -o %t -DCHECK_IN_F && %t >%t.out 2>&1
// RUN: %clangxx_msan -m64 -O3 %s -o %t -DCHECK_IN_F && %t >%t.out 2>&1
// Test that (no_sanitize_memory) functions
// * don't check shadow values (-DCHECK_IN_F)
// * treat all values loaded from memory as fully initialized (-UCHECK_IN_F)
#include <stdlib.h>
#include <stdio.h>
__attribute__((noinline))
__attribute__((no_sanitize_memory))
int f(void) {
int x;
int * volatile p = &x;
#ifdef CHECK_IN_F
if (*p)
exit(0);
#endif
return *p;
}
int main(void) {
if (f())
exit(0);
return 0;
}

33
compiler-rt/lib/msan/lit_tests/no_sanitize_memory_prop.cc Normal file
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// RUN: %clangxx_msan -m64 -O0 %s -o %t && %t >%t.out 2>&1
// RUN: %clangxx_msan -m64 -O1 %s -o %t && not %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out
// RUN: %clangxx_msan -m64 -O2 %s -o %t && not %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out
// RUN: %clangxx_msan -m64 -O3 %s -o %t && not %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out
// Test that (no_sanitize_memory) functions propagate shadow.
// Note that at -O0 there is no report, because 'x' in 'f' is spilled to the
// stack, and then loaded back as a fully initialiazed value (due to
// no_sanitize_memory attribute).
#include <stdlib.h>
#include <stdio.h>
__attribute__((noinline))
__attribute__((no_sanitize_memory))
int f(int x) {
return x;
}
int main(void) {
int x;
int * volatile p = &x;
int y = f(*p);
// CHECK: WARNING: Use of uninitialized value
// CHECK: {{#0 0x.* in main .*no_sanitize_memory_prop.cc:}}[[@LINE+1]]
if (y)
exit(0);
return 0;
}