PR libstdc++/83834 replace wildcard pattern in linker script

	PR libstdc++/83834
	* config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace std::c[a-g]* wildcard
	pattern with exact match for std::cerr.

From-SVN: r256739

libstdc++-v3/ChangeLog

+2018-01-16  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/83834
+	* config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace std::c[a-g]* wildcard
+	pattern with exact match for std::cerr.
+
 2018-01-15  Jonathan Wakely  <jwakely@redhat.com>
 
 	PR libstdc++/83833

libstdc++-v3/config/abi/pre/gnu.ver

@@ -60,7 +60,7 @@ GLIBCXX_3.4 {
       std::basic_[t-z]*;
       std::ba[t-z]*;
       std::b[b-z]*;
-      std::c[a-g]*;
+      std::cerr;
 #     std::char_traits;
 #     std::c[i-z]*;
       std::c[i-n]*;