[libc++][AIX] Remove hardcode fail from format test

[Jake-Egan]

Summary

The test is hardcoded to fail after passing test_ill_formed_utf16(). It passes on 32-bit AIX if we remove this.

[Mordante]

Sorry it seems I overlooked this patch. LGTM, can you rebase it before landing?

[Jake-Egan]

rebase

[Jake-Egan]

Restore patch (lost part of the patch when rebasing)

[ldionne]

Can we please land this?

[ldionne]

Sorry, I missed that you updated just yesterday. Thanks!

libcxx/test/std/utilities/format/format.functions/escaped_output.unicode.pass.cpp

 //===----------------------------------------------------------------------===//
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
 
 // This version runs the test when the platform has Unicode support.
 // UNSUPPORTED: libcpp-has-no-unicode
 
-// TODO FMT Investigate Windows and 32-bit AIX issues.
-// UNSUPPORTED: msvc, target={{.+}}-windows-gnu, target=powerpc-ibm-aix{{.*}}
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
 
 // TODO FMT This test should not require std::to_chars(floating-point)
 // XFAIL: availability-fp_to_chars-missing
 
 // <format>
 
 // This test the debug string type for the formatter specializations for char
 // and string types. This tests Unicode strings.

 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
   test<wchar_t>();
 #endif
 
   test_ill_formed_utf8();
 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
 #  ifdef _LIBCPP_SHORT_WCHAR
   test_ill_formed_utf16();
-  assert(false);
 #  else  // _LIBCPP_SHORT_WCHAR
   test_ill_formed_utf32();
 #  endif // _LIBCPP_SHORT_WCHAR
 #endif   // TEST_HAS_NO_WIDE_CHARACTERS
 
   return 0;
 }