[Bug libstdc++/51785] gets not anymore declared

["ramana at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51785

--- Comment #14 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> 2012-02-28 16:09:52 UTC ---
I can confirm that a build for arm-linux-gnueabi completes and do some
cross-testing on qemu if that's deemed to be enough.

Any other ideas for testing. 

Ramana

Here's a suggestion for the comments in this patch. 

diff --git a/libstdc++-v3/include/c_global/cstdio
b/libstdc++-v3/include/c_global/cstdio
index 049704d..76755ac 100644
--- a/libstdc++-v3/include/c_global/cstdio
+++ b/libstdc++-v3/include/c_global/cstdio
@@ -89,6 +89,17 @@
 #undef vprintf
 #undef vsprintf

+/* glibc 2.15 and later do not declare gets anymore for 
+   ISO C11 mode and if __GNU_SOURCE is defined. See 
+   http://gcc.gnu.org/PR51785 for more on this topic. If
+   this is being changed an equivalent change has to be made
+   in include/c_std/c_stdio.  */
+#if __GLIBC_PREREQ (2,15)
+extern "C" {
+  extern char *gets (char *__s) __attribute__((deprecated));
+}
+#endif
+
 namespace std
 {
   using ::FILE;
diff --git a/libstdc++-v3/include/c_std/cstdio
b/libstdc++-v3/include/c_std/cstdio
index 510f599..29142bb 100644
--- a/libstdc++-v3/include/c_std/cstdio
+++ b/libstdc++-v3/include/c_std/cstdio
@@ -88,6 +88,17 @@
 #undef vprintf
 #undef vsprintf

+/* glibc 2.15 and later do not declare gets anymore for
+   ISO C11 mode and if __GNU_SOURCE is defined. See 
+   http://gcc.gnu.org/PR51785 for more on this topic. If
+   this hunk below is being changed please also investigate
+   the change for include/c_global/cstdio.  */
+#if __GLIBC_PREREQ (2,15)
+extern "C" {
+  extern char *gets (char *__s) __attribute__((deprecated));
+}
+#endif
+
 namespace std
 {
   using ::FILE;