On Wed, May 24, 2017 at 04:16:30PM +0200, Andreas Schwab wrote:
> FAIL: g++.dg/ext/integer-pack2.C -std=gnu++11 (test for excess errors)
> Excess errors:
> /daten/aranym/gcc/gcc-20170524/gcc/testsuite/g++.dg/ext/integer-pack2.C:10:48:
> error: overflow in constant expression [-fpermissive]
> /daten/aranym/gcc/gcc-20170524/gcc/testsuite/g++.dg/ext/integer-pack2.C:10:48:
> error: overflow in constant expression [-fpermissive]
To be precise, it fails only on 32-bit targets.
If we at that point want some wider integer that when cast to int
is 0 (or small enough positive number?), shall we use something like
this, or say 1LL << (sizeof (int) * __CHAR_BIT__), or 2LL * INT_MIN,
something else? Do we need to include <limits.h>? Or can we replace
INT_MAX with __INT_MAX__?
Not sure about that -2147483650 for 16-bit int targets (perhaps the test can
be guarded with int32 effective target).
2017-05-24 Jakub Jelinek <ja...@redhat.com>
* g++.dg/ext/integer-pack2.C (w): Use -9223372036854775807LL - 1
instead of -9223372036854775808.
--- gcc/testsuite/g++.dg/ext/integer-pack2.C.jj 2017-05-24 11:59:01.000000000
+0200
+++ gcc/testsuite/g++.dg/ext/integer-pack2.C 2017-05-24 16:24:18.341421124
+0200
@@ -7,6 +7,6 @@ template<typename T, T...> struct intege
template<typename T, T num>
using make_integer_sequence = integer_sequence<T, __integer_pack(num)...>; //
{ dg-error "argument" }
-make_integer_sequence<int, -9223372036854775808> w;
+make_integer_sequence<int, -9223372036854775807LL - 1> w;
make_integer_sequence<int, INT_MAX> x; // { dg-message "required" }
make_integer_sequence<int, -2147483650> y; // { dg-message "required" }
Jakub
