diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/pr36227.c')
-rw-r--r-- | gcc/testsuite/gcc.dg/pr36227.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr36227.c b/gcc/testsuite/gcc.dg/pr36227.c new file mode 100644 index 000000000..27fe00155 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr36227.c @@ -0,0 +1,22 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -Wstrict-overflow=3" } */ +#if (__SIZEOF_LONG_LONG__ == __SIZEOF_POINTER__) +typedef unsigned long long ptrcast; +#elif (__SIZEOF_LONG__ == __SIZEOF_POINTER__) +typedef unsigned long ptrcast; +#elif (__SIZEOF_INT__ == __SIZEOF_POINTER__) +typedef unsigned int ptrcast; +#else +#error Add target support here +#endif + +volatile unsigned long * +sat_add(volatile unsigned long *ptr, unsigned long i, volatile unsigned long *end) +{ + if ((ptrcast)ptr + i * sizeof(*ptr) > (ptrcast)ptr) /* { dg-bogus "pointer wraparound" } */ + return ptr + i; + else + return end; +} + + |