--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.old-deja/g++.law/weak.C	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,20 @@
+// { dg-do link { target i?86-*-linux* i?86-*-gnu* x86_64-*-linux* } }
+// { dg-require-effective-target static }
+// { dg-options "-static" }
+// Bug: g++ fails to instantiate operator<<.
+
+// libc-5.4.xx has __IO_putc in its static C library, which can conflict
+// with the copy of __IO_putc in the libstdc++ library built by egcs.
+#include <iostream>
+#include <streambuf>
+#include <cstdio>
+
+std::istream x (0);
+
+main () {
+  x.get();
+  std::putc(0, 0);
+  std::fgets(0, 0, 0); 
+  x.get((char*) 0, 0);
+}
+