[PATCH] libstdc++: Use UTF-32BE as wide encoding for big-endian machines [PR119725]

[Tomasz Kamiński]

This changes the `dg-options` line so UTF-32 with byte order native to the
machine is used as wide encoding, avoiding.

We still do not handle mismatch in the byte order of the Unicode encodings
(UTF32-BE on little-endian machines). This would require larger changes,
as for example `unicode-data.h` tables are encoded with native byte order.

libstdc++-v3/ChangeLog:

	* testsuite/std/format/debug.cc: Updated dg-options.
	* testsuite/std/format/debug_nonunicode.cc: Updated dg-options.
---
Tested on x86_64-linux, wasn't able to confirm fix on SPARC/Solaris, as I am
unable to login into machine.

 libstdc++-v3/testsuite/std/format/debug.cc            | 3 ++-
 libstdc++-v3/testsuite/std/format/debug_nonunicode.cc | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/testsuite/std/format/debug.cc b/libstdc++-v3/testsuite/std/format/debug.cc
index 07cd1e0e349..71bb7f4a0fe 100644
--- a/libstdc++-v3/testsuite/std/format/debug.cc
+++ b/libstdc++-v3/testsuite/std/format/debug.cc
@@ -1,4 +1,5 @@
-// { dg-options "-fexec-charset=UTF-8 -fwide-exec-charset=UTF-32LE -DUNICODE_ENC" }
+// { dg-options "-fexec-charset=UTF-8 -fwide-exec-charset=UTF-32LE -DUNICODE_ENC" { target le } }
+// { dg-options "-fexec-charset=UTF-8 -fwide-exec-charset=UTF-32BE -DUNICODE_ENC" { target be } }
 // { dg-do run { target c++23 } }
 // { dg-add-options no_pch }
 
diff --git a/libstdc++-v3/testsuite/std/format/debug_nonunicode.cc b/libstdc++-v3/testsuite/std/format/debug_nonunicode.cc
index 5c03171d71a..2ac7e757ea8 100644
--- a/libstdc++-v3/testsuite/std/format/debug_nonunicode.cc
+++ b/libstdc++-v3/testsuite/std/format/debug_nonunicode.cc
@@ -1,4 +1,4 @@
-// { dg-options "-fexec-charset=ISO8859-1 -fwide-exec-charset=UTF-32LE" }
+// { dg-options "-fexec-charset=ISO8859-1" }
 // { dg-do run { target c++23 } }
 // { dg-add-options no_pch }
 
-- 
2.49.0