system/fortify-headers: [PD] fix maintainer, fix C++ code

1 files changed, 175 insertions, 0 deletions

diff --git a/system/fortify-headers/extension-cpp-fix.patch b/system/fortify-headers/extension-cpp-fix.patch
new file mode 100644
index 000000000..fc7bbb5f8
--- /dev/null
+++ b/system/fortify-headers/extension-cpp-fix.patch
@@ -0,0 +1,175 @@
+From a29bd89353a05454e2545d52124f9a1a61b4e3e3 Mon Sep 17 00:00:00 2001
+From: "A. Wilcox" <AWilcox@Wilcox-Tech.com>
+Date: Sat, 23 Jun 2018 17:57:48 -0500
+Subject: [PATCH] Don't use __extension__ in C++ code
+
+A few important notes:
+
+*  __extension__ is a GNU C "alternate" keyword, not a C++ keyword.[1]
+
+*  __extension__ is designed to work on "expressions"; it does work on
+   #include_next in C mode, but it has no effect in C++ mode; the
+   warning will still appear, if enabled, even with __extension__
+   preceding #include_next.  This is because #include_next is not
+   considered an expression in C++, so the compiler attaches
+   __extension__ to the first expression of the header.
+
+All of this leads us to a build failure while building at least all
+Mozilla software.  Moz has an alternate -isystem dir searched before
+/usr/include that overrides some headers, including <features.h>.  The
+first statement in each of these headers is a #pragma, and since
+__extension__ is looking for an expression, and #pragma is a "null"
+expression, we end up with the following error:
+
+dist/system_wrappers/features.h:1:9: error: '#pragma' is not allowed here
+
+Since __extension__ has no effect on #include_next in C++ mode anyway,
+and since it can cause breakage, this commit omits __extension__ in C++
+mode.
+
+[1]: https://gcc.gnu.org/onlinedocs/gcc-6.4.0/gcc/Alternate-Keywords.html
+---
+ include/poll.h       | 2 ++
+ include/stdio.h      | 2 ++
+ include/stdlib.h     | 4 ++++
+ include/string.h     | 2 ++
+ include/sys/select.h | 2 ++
+ include/sys/socket.h | 2 ++
+ include/unistd.h     | 2 ++
+ include/wchar.h      | 8 ++++++++
+ 8 files changed, 24 insertions(+)
+
+diff --git a/include/poll.h b/include/poll.h
+index 7b42866..24691f1 100644
+--- a/include/poll.h
++++ b/include/poll.h
+@@ -16,7 +16,9 @@
+ #ifndef _FORTIFY_POLL_H
+ #define _FORTIFY_POLL_H
+ 
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <poll.h>
+ 
+ #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
+diff --git a/include/stdio.h b/include/stdio.h
+index b67f9ce..a965184 100644
+--- a/include/stdio.h
++++ b/include/stdio.h
+@@ -16,7 +16,9 @@
+ #ifndef _FORTIFY_STDIO_H
+ #define _FORTIFY_STDIO_H
+ 
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <stdio.h>
+ 
+ #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
+diff --git a/include/stdlib.h b/include/stdlib.h
+index 7ff5746..ef70995 100644
+--- a/include/stdlib.h
++++ b/include/stdlib.h
+@@ -16,12 +16,16 @@
+ #ifndef _FORTIFY_STDLIB_H
+ #define _FORTIFY_STDLIB_H
+ 
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <stdlib.h>
+ 
+ #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
+ #if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <limits.h>
+ #endif
+ 
+diff --git a/include/string.h b/include/string.h
+index ff237b0..43c7485 100644
+--- a/include/string.h
++++ b/include/string.h
+@@ -16,7 +16,9 @@
+ #ifndef _FORTIFY_STRING_H
+ #define _FORTIFY_STRING_H
+ 
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <string.h>
+ 
+ #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
+diff --git a/include/sys/select.h b/include/sys/select.h
+index e4e398f..bcee8be 100644
+--- a/include/sys/select.h
++++ b/include/sys/select.h
+@@ -16,7 +16,9 @@
+ #ifndef _FORTIFY_SYS_SELECT_H
+ #define _FORTIFY_SYS_SELECT_H
+ 
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <sys/select.h>
+ 
+ #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
+diff --git a/include/sys/socket.h b/include/sys/socket.h
+index 7d3f023..ad6ab2d 100644
+--- a/include/sys/socket.h
++++ b/include/sys/socket.h
+@@ -16,7 +16,9 @@
+ #ifndef _FORTIFY_SYS_SOCKET_H
+ #define _FORTIFY_SYS_SOCKET_H
+ 
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <sys/socket.h>
+ 
+ #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
+diff --git a/include/unistd.h b/include/unistd.h
+index d3ab246..71dda84 100644
+--- a/include/unistd.h
++++ b/include/unistd.h
+@@ -16,7 +16,9 @@
+ #ifndef _FORTIFY_UNISTD_H
+ #define _FORTIFY_UNISTD_H
+ 
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <unistd.h>
+ 
+ #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
+diff --git a/include/wchar.h b/include/wchar.h
+index 7394598..3cb6f92 100644
+--- a/include/wchar.h
++++ b/include/wchar.h
+@@ -16,13 +16,21 @@
+ #ifndef _FORTIFY_WCHAR_H
+ #define _FORTIFY_WCHAR_H
+ 
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <limits.h>
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <stdlib.h>
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <string.h>
++#ifndef __cplusplus
+ __extension__
++#endif
+ #include_next <wchar.h>
+ 
+ #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
+-- 
+2.15.0
+