diff options
Diffstat (limited to 'src/cmd/compile/internal/types2/testdata/const0.src')
| -rw-r--r-- | src/cmd/compile/internal/types2/testdata/const0.src | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/src/cmd/compile/internal/types2/testdata/const0.src b/src/cmd/compile/internal/types2/testdata/const0.src index 9e0de93d54..5608b1549b 100644 --- a/src/cmd/compile/internal/types2/testdata/const0.src +++ b/src/cmd/compile/internal/types2/testdata/const0.src @@ -350,9 +350,14 @@ const _ = unsafe.Sizeof(func() { }) // untyped constants must not get arbitrarily large -const ( - huge = 1<<1000 - // TODO(gri) here the errors should be at the last operator not the last operand - _ = huge * huge * huge // ERROR constant multiplication overflow - _ = huge << 1000 << 1000 // ERROR constant shift overflow -) +const prec = 512 // internal maximum precision for integers +const maxInt = (1<<(prec/2) - 1) * (1<<(prec/2) + 1) // == 1<<prec - 1 + +const _ = maxInt + /* ERROR constant addition overflow */ 1 +const _ = -maxInt - /* ERROR constant subtraction overflow */ 1 +const _ = maxInt ^ /* ERROR constant bitwise XOR overflow */ -1 +const _ = maxInt * /* ERROR constant multiplication overflow */ 2 +const _ = maxInt << /* ERROR constant shift overflow */ 2 +const _ = 1 << /* ERROR constant shift overflow */ prec + +const _ = ^ /* ERROR constant bitwise complement overflow */ maxInt |