[libcxx-commits] [libcxx] [libcxx] [test] Fix the locale ctype widen tests on AIX (PR #91744)

[Xing Xue via libcxx-commits]

https://github.com/xingxue-ibm created https://github.com/llvm/llvm-project/pull/91744

The C locale on AIX uses `ISO-8859-1`, where `0xFB` is a valid character. Widening char(-5) succeeds and produces L'\u00fb' the same as on macOS, FreeBSD, and Windows. This patch removes `XFAIL: LIBCXX-AIX-FIXME` and uses the macOS, FreeBSD, and WIN32 code path for AIX.

>From 2558993ced070110e81e3eeb1609e9b34c8cb684 Mon Sep 17 00:00:00 2001
From: Xing Xue <xingxue at outlook.com>
Date: Fri, 10 May 2024 09:37:47 -0400
Subject: [PATCH] Remove LIBCXX-AIX-FIXME and use the WIN32, macOS, and FreeBSD
 code path for AIX.

---
 .../category.ctype/locale.ctype.byname/widen_1.pass.cpp        | 3 +--
 .../category.ctype/locale.ctype.byname/widen_many.pass.cpp     | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_1.pass.cpp b/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_1.pass.cpp
index bafdfcea04600..959a4be9e1de9 100644
--- a/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_1.pass.cpp
+++ b/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_1.pass.cpp
@@ -7,7 +7,6 @@
 //===----------------------------------------------------------------------===//
 
 // REQUIRES: locale.en_US.UTF-8
-// XFAIL: LIBCXX-AIX-FIXME
 // XFAIL: no-wide-characters
 
 // <locale>
@@ -57,7 +56,7 @@ int main(int, char**)
             assert(f.widen('.') == L'.');
             assert(f.widen('a') == L'a');
             assert(f.widen('1') == L'1');
-#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_WIN32)
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_WIN32) || defined(_AIX)
             assert(f.widen(char(-5)) == L'\u00fb');
 #else
             assert(f.widen(char(-5)) == wchar_t(-1));
diff --git a/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_many.pass.cpp b/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_many.pass.cpp
index 552eab1f2ab41..078b4a6fefb7e 100644
--- a/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_many.pass.cpp
+++ b/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_many.pass.cpp
@@ -7,7 +7,6 @@
 //===----------------------------------------------------------------------===//
 
 // REQUIRES: locale.en_US.UTF-8
-// XFAIL: LIBCXX-AIX-FIXME
 // XFAIL: no-wide-characters
 
 // <locale>
@@ -63,7 +62,7 @@ int main(int, char**)
             assert(v[3] == L'.');
             assert(v[4] == L'a');
             assert(v[5] == L'1');
-#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_WIN32)
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_WIN32) || defined(_AIX)
             assert(v[6] == L'\xfb');
 #else
             assert(v[6] == wchar_t(-1));