Hi!
The following patch uses make_signed_t<size_t> instead of
make_signed<size_t>::type in the diagnostics, because the former is shorter.
It is true that one can't use make_signed<size_t>::type in C++11 code (which
is why I haven't changed it in the testcase which is c++11 effective
target), but the message talks about C++23 and make_signed_t is a C++14 and
later feature, so I think it is fine.
Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
2021-02-04 Jakub Jelinek <ja...@redhat.com>
* expr.c (cpp_classify_number): Use make_signed_t<size_t> instead of
make_signed<size_t>::type in the diagnostics.
* g++.dg/warn/Wsize_t-literals.C: Expect make_signed_t<size_t> instead
of make_signed<size_t>::type in the diagnostics.
--- libcpp/expr.c.jj 2021-02-03 20:45:37.114671441 +0100
+++ libcpp/expr.c 2021-02-03 20:46:22.142168043 +0100
@@ -820,7 +820,7 @@ cpp_classify_number (cpp_reader *pfile,
{
const char *message = (result & CPP_N_UNSIGNED) == CPP_N_UNSIGNED
? N_("use of C++23 %<size_t%> integer constant")
- : N_("use of C++23
%<make_signed<size_t>::type%> integer constant");
+ : N_("use of C++23 %<make_signed_t<size_t>%>
integer constant");
cpp_warning_with_line (pfile, CPP_W_SIZE_T_LITERALS,
virtual_location, 0, message);
}
--- gcc/testsuite/g++.dg/warn/Wsize_t-literals.C.jj 2021-02-03
20:45:37.101671586 +0100
+++ gcc/testsuite/g++.dg/warn/Wsize_t-literals.C 2021-02-03
20:48:03.166038618 +0100
@@ -8,5 +8,5 @@ std::size_t S1 = 5678ZU; // { dg-warning
std::size_t s2 = 1234uz; // { dg-warning {use of C\+\+23 .size_t. integer
constant} "" { target c++20_down } }
std::size_t S2 = 5678UZ; // { dg-warning {use of C\+\+23 .size_t. integer
constant} "" { target c++20_down } }
-std::make_signed<std::size_t>::type pd1 = 1234z; // { dg-warning {use of
C\+\+23 .make_signed<size_t>::type. integer constant} "" { target c++20_down } }
-std::make_signed<std::size_t>::type PD1 = 5678Z; // { dg-warning {use of
C\+\+23 .make_signed<size_t>::type. integer constant} "" { target c++20_down } }
+std::make_signed<std::size_t>::type pd1 = 1234z; // { dg-warning {use of
C\+\+23 .make_signed_t<size_t>. integer constant} "" { target c++20_down } }
+std::make_signed<std::size_t>::type PD1 = 5678Z; // { dg-warning {use of
C\+\+23 .make_signed_t<size_t>. integer constant} "" { target c++20_down } }
Jakub
