diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/c-c++-common/ubsan')
-rw-r--r-- | gcc-4.9/gcc/testsuite/c-c++-common/ubsan/overflow-sub-3.c | 34 | ||||
-rw-r--r-- | gcc-4.9/gcc/testsuite/c-c++-common/ubsan/undefined-2.c | 26 |
2 files changed, 60 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/c-c++-common/ubsan/overflow-sub-3.c b/gcc-4.9/gcc/testsuite/c-c++-common/ubsan/overflow-sub-3.c new file mode 100644 index 0000000..deec5c4 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/c-c++-common/ubsan/overflow-sub-3.c @@ -0,0 +1,34 @@ +/* { dg-do run } */ +/* { dg-options "-fsanitize=signed-integer-overflow" } */ + +__attribute__((noinline, noclone)) int +foo1 (int x, int y) +{ + return x - y; +} + +__attribute__((noinline, noclone)) int +foo2 (int x, int y) +{ + unsigned int xa = (unsigned int) x - (__INT_MAX__ - 3); + xa &= 3; + x = __INT_MAX__ - 3 + xa; + unsigned int ya = y + 1U; + ya &= 1; + y = ya - 1; + return x - y; +} + +int +main () +{ + int xm1, y; + for (xm1 = __INT_MAX__ - 4; xm1 < __INT_MAX__; xm1++) + for (y = -1; y <= 0; y++) + if (foo1 (xm1 + 1, y) != (int) (xm1 + 1U - y) + || foo2 (xm1 + 1, y) != (int) (xm1 + 1U - y)) + __builtin_abort (); + return 0; +} +/* { dg-output ":7:\[0-9]\[^\n\r]*signed integer overflow: 2147483647 - -1 cannot be represented in type 'int'\[^\n\r]*(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*:19:\[0-9]\[^\n\r]*signed integer overflow: 2147483647 - -1 cannot be represented in type 'int'" } */ diff --git a/gcc-4.9/gcc/testsuite/c-c++-common/ubsan/undefined-2.c b/gcc-4.9/gcc/testsuite/c-c++-common/ubsan/undefined-2.c new file mode 100644 index 0000000..fd5b4d3 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/c-c++-common/ubsan/undefined-2.c @@ -0,0 +1,26 @@ +/* { dg-do run } */ +/* { dg-options "-fsanitize=undefined" } */ +/* { dg-additional-options "-std=gnu11" { target c } } */ +/* { dg-additional-options "-std=c++11" { target c++ } } */ + +#include <stdio.h> + +volatile int w, z; + +__attribute__ ((noinline, noclone)) int +foo (int x, int y) +{ + z++; + return x << y; +} + +int +main () +{ + fputs ("1st\n", stderr); + w = foo (0, -__INT_MAX__); + return 0; +} + +/* { dg-output "1st(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*shift exponent -\[^\n\r]* is negative\[^\n\r]*(\n|\r\n|\r)" } */ |