diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-2.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-2.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-2.c b/gcc-4.9/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-2.c new file mode 100644 index 000000000..28525e0ff --- /dev/null +++ b/gcc-4.9/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-2.c @@ -0,0 +1,25 @@ +/* This tests that when faced with two references to the same memory + location in the same basic block, the second reference should not + be instrumented by the Address Sanitizer. But in case of access to + overlapping regions we must be precise. */ + +/* { dg-options "-fdump-tree-asan0" } */ +/* { dg-do compile } */ +/* { dg-skip-if "" { *-*-* } { "*" } { "-O0" } } */ + +int +main () +{ + char tab[5]; + + /* Here, we instrument the access at offset 0 and access at offset + 4. */ + __builtin_memset (tab, 1, sizeof (tab)); + /* We instrumented access at offset 0 above already, so only access + at offset 3 is instrumented. */ + __builtin_memset (tab, 1, 3); +} + +/* { dg-final { scan-tree-dump-times "__builtin___asan_report_store1" 3 "asan0" } } */ +/* { dg-final { scan-tree-dump-times "__builtin___asan_report" 3 "asan0" } } */ +/* { dg-final { cleanup-tree-dump "asan0" } } */ |