From: Alexandre Oliva <oliva@adacore.com>
Date: Fri, 6 May 2022 10:26:04 +0000 (-0300)
Subject: [PR105324] libstdc++: testsuite: pr105324 requires FP from_char
X-Git-Tag: releases/gcc-12.2.0~350
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8cd7d0066e0ba2a082b0e7de35e883837546583;p=thirdparty%2Fgcc.git

[PR105324] libstdc++: testsuite: pr105324 requires FP from_char

The floating-point overloads of from_char are only declared if
_GLIBCXX_HAVE_USELOCALE is #defined as nonzero.  That's exposed from
charconv as __cpp_lib_to_chars >= 201611L, so guard the test body with
that.


for  libstdc++-v3/ChangeLog

	PR c++/105324
	* testsuite/20_util/from_chars/pr105324.cc: Guard test body
	with conditional for floating-point overloads of from_char.

(cherry picked from commit 25389f3de489c25a6983db96428a6bf06aedc829)
---

diff --git a/libstdc++-v3/testsuite/20_util/from_chars/pr105324.cc b/libstdc++-v3/testsuite/20_util/from_chars/pr105324.cc
index cecb17e41cc6..ef24b4c5c7b7 100644
--- a/libstdc++-v3/testsuite/20_util/from_chars/pr105324.cc
+++ b/libstdc++-v3/testsuite/20_util/from_chars/pr105324.cc
@@ -5,10 +5,12 @@
 
 int main()
 {
+#if __cpp_lib_to_chars >= 201611L // FP from_char not available otherwise.
   // PR libstdc++/105324
   // std::from_chars() assertion at floating_from_chars.cc:78
   std::string s(512, '1');
   s[1] = '.';
   long double d;
   std::from_chars(s.data(), s.data() + s.size(), d);
+#endif
 }