diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/c-c++-common/ubsan/overflow-int128.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/c-c++-common/ubsan/overflow-int128.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/c-c++-common/ubsan/overflow-int128.c b/gcc-4.9/gcc/testsuite/c-c++-common/ubsan/overflow-int128.c new file mode 100644 index 000000000..9a850243d --- /dev/null +++ b/gcc-4.9/gcc/testsuite/c-c++-common/ubsan/overflow-int128.c @@ -0,0 +1,47 @@ +/* { dg-do run } */ +/* { dg-require-effective-target int128 } */ +/* { dg-options "-fsanitize=signed-integer-overflow" } */ + +/* 2^127 - 1 */ +#define INT128_MAX (__int128) (((unsigned __int128) 1 << ((__SIZEOF_INT128__ * __CHAR_BIT__) - 1)) - 1) +#define INT128_MIN (-INT128_MAX - 1) + +int +main (void) +{ + volatile __int128 i = INT128_MAX; + volatile __int128 j = 1; + volatile __int128 k = i + j; + k = j + i; + i++; + j = INT128_MAX - 100; + j += (1 << 10); + + j = INT128_MIN; + i = -1; + k = i + j; + k = j + i; + j--; + j = INT128_MIN + 100; + j += -(1 << 10); + + i = INT128_MAX; + j = 2; + k = i * j; + + i = INT128_MIN; + i = -i; + + return 0; +} + +/* { dg-output "signed integer overflow: 0x7fffffffffffffffffffffffffffffff \\+ 1 cannot be represented in type '__int128'(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*signed integer overflow: 1 \\+ 0x7fffffffffffffffffffffffffffffff cannot be represented in type '__int128'(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*signed integer overflow: 0x7fffffffffffffffffffffffffffffff \\+ 1 cannot be represented in type '__int128'(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*signed integer overflow: 0x7fffffffffffffffffffffffffffff9b \\+ 1024 cannot be represented in type '__int128'(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*signed integer overflow: -1 \\+ 0x80000000000000000000000000000000 cannot be represented in type '__int128'(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*signed integer overflow: 0x80000000000000000000000000000000 \\+ -1 cannot be represented in type '__int128'(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*signed integer overflow: 0x80000000000000000000000000000000 \\+ -1 cannot be represented in type '__int128'(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*signed integer overflow: 0x80000000000000000000000000000064 \\+ -1024 cannot be represented in type '__int128'(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*signed integer overflow: 0x7fffffffffffffffffffffffffffffff \\* 2 cannot be represented in type '__int128'(\n|\r\n|\r)" } */ +/* { dg-output "\[^\n\r]*negation of 0x80000000000000000000000000000000 cannot be represented in type '__int128'; cast to an unsigned type to negate this value to itself(\n|\r\n|\r)" } */ |