libstdc++: Add missing #include <string> to new test

Somehow I pushed a different version of this test to the one I actually
tested.

libstdc++-v3/ChangeLog:

	* testsuite/21_strings/basic_string/cons/char/105995.cc: Add
	missing #include.

diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/cons/char/105995.cc b/libstdc++-v3/testsuite/21_strings/basic_string/cons/char/105995.cc
index aa8bcba3dca946f62929e9f95bfe6af67dabeee7..4764ceff72a284262903ef532452eebfeb6715cb 100644 (file)
--- a/libstdc++-v3/testsuite/21_strings/basic_string/cons/char/105995.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/cons/char/105995.cc
@@ -2,6 +2,8 @@
 // { dg-do compile { target c++20 } }
 // { dg-require-effective-target cxx11_abi }
 
+#include <string>
+
 // PR libstdc++/105995
 // Not required by the standard, but supported for QoI.
 constexpr std::string pr105995_empty;