From: Jonathan Wakely <jwakely@redhat.com>
Date: Fri, 21 Nov 2025 12:02:54 +0000 (+0000)
Subject: libstdc++: Include <ostream> in <regex> for debug mode
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8cf136b1a281db54edf5f824e8b08e5b757269f;p=thirdparty%2Fgcc.git

libstdc++: Include <ostream> in <regex> for debug mode

I don't know what changed, but I'm seeing some new failures:

FAIL: 23_containers/vector/capacity/114945.cc  -std=gnu++11 (test for excess errors)
FAIL: 23_containers/vector/capacity/114945.cc  -std=gnu++14 (test for excess errors)
FAIL: 23_containers/vector/capacity/114945.cc  -std=gnu++17 (test for excess errors)
FAIL: 28_regex/basic_regex/85098.cc  -std=gnu++11 (test for excess errors)
FAIL: 28_regex/basic_regex/85098.cc  -std=gnu++14 (test for excess errors)
FAIL: 28_regex/basic_regex/85098.cc  -std=gnu++17 (test for excess errors)
FAIL: 28_regex/simple_c++11.cc   (test for excess errors)

libstdc++-v3/ChangeLog:

	* include/bits/regex_automaton.tcc [_GLIBCXX_DEBUG]: Include
	<ostream> so that _State_base::_M_print etc. can use it.
---

diff --git a/libstdc++-v3/include/bits/regex_automaton.tcc b/libstdc++-v3/include/bits/regex_automaton.tcc
index 8a826469db1..4d566c62ecd 100644
--- a/libstdc++-v3/include/bits/regex_automaton.tcc
+++ b/libstdc++-v3/include/bits/regex_automaton.tcc
@@ -28,6 +28,10 @@
  *  Do not attempt to use it directly. @headername{regex}
  */
 
+#ifdef _GLIBCXX_DEBUG
+# include <ostream>
+#endif
+
 namespace std _GLIBCXX_VISIBILITY(default)
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION