Remove ::gets for FreeBSD 13 and later
Summary:
In https://svnweb.freebsd.org/changeset/base/351659 @emaste removed gets() from
FreeBSD 13's libc, and our copies of libc++ and libstdc++. In that change, the
declarations were simply deleted, but I would like to propose this conditional
test instead.
Reviewers: EricWF, mclow.lists, emaste
Reviewed By: mclow.lists
Subscribers: krytarowski, christof, ldionne, emaste, libcxx-commits
Differential Revision: https://reviews.llvm.org/D67316
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@371324 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__config b/include/__config
index 03725e2..f631faa 100644
--- a/include/__config
+++ b/include/__config
@@ -1152,6 +1152,13 @@
#define _LIBCPP_HAS_NO_STDOUT
#endif
+// Some systems do not provide gets() in their C library, for security reasons.
+#ifndef _LIBCPP_C_HAS_NO_GETS
+# if defined(_LIBCPP_MSVCRT) || (defined(__FreeBSD__) && __FreeBSD__ >= 13)
+# define _LIBCPP_C_HAS_NO_GETS
+# endif
+#endif
+
#if defined(__BIONIC__) || defined(__CloudABI__) || \
defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC)
#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE
diff --git a/include/cstdio b/include/cstdio
index 6755693..0f3f42d 100644
--- a/include/cstdio
+++ b/include/cstdio
@@ -152,7 +152,7 @@
#ifndef _LIBCPP_HAS_NO_STDIN
using ::getchar;
-#if _LIBCPP_STD_VER <= 11 && !defined(_LIBCPP_MSVCRT)
+#if _LIBCPP_STD_VER <= 11 && !defined(_LIBCPP_C_HAS_NO_GETS)
using ::gets;
#endif
using ::scanf;
