diff options
Diffstat (limited to 'sys-devel/m4/files/m4-1.4.19-fortify-source.patch')
| -rw-r--r-- | sys-devel/m4/files/m4-1.4.19-fortify-source.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sys-devel/m4/files/m4-1.4.19-fortify-source.patch b/sys-devel/m4/files/m4-1.4.19-fortify-source.patch new file mode 100644 index 000000000000..69e5405b6f2b --- /dev/null +++ b/sys-devel/m4/files/m4-1.4.19-fortify-source.patch @@ -0,0 +1,49 @@ +https://bugs.gentoo.org/890273 + +From 960b9b4d0774f78d286932251d6f53f638aefb19 Mon Sep 17 00:00:00 2001 +From: Sam James <sam@gentoo.org> +Date: Mon, 9 Jan 2023 08:00:34 +0000 +Subject: [PATCH] build: Don't add _FORTIFY_SOURCE if already set by + user/toolchain + +Newer toolchains (GCC 12+ or Clang 9+, glibc-2.34) allow _FORTIFY_SOURCE=3. + +The current macro used in configure.ac will forcefully downgrade to F_S=2 +and emit a warning if the user set something else: +``` +x86_64-pc-linux-gnu-gcc -DEXEEXT=\"\" -I. -I../lib -DIN_M4_GNULIB_TESTS=1 -I. -I. -I.. -I./.. -I../lib -I./../lib -O2 -pipe -march=native -fdiagnostics-color=always -frecord-gcc-switches -Wreturn-type -ggdb3 -Werror=implicit-function-declaration -Werror=implicit-int -c -o glthread/thread.o glthread/thread.c +In file included from glthread/thread.c:20: +../lib/config.h:202: warning: "_FORTIFY_SOURCE" redefined + 202 | # define _FORTIFY_SOURCE 2 + | +<built-in>: note: this is the location of the previous definition +``` + +See: 390d259efe8e1c7e4b6babb4738fef7427416857 +Signed-off-by: Sam James <sam@gentoo.org> +--- a/configure.ac ++++ b/configure.ac +@@ -133,7 +133,9 @@ if test "$gl_gcc_warnings" = yes; then + [/* Enable compile-time and run-time bounds-checking, and some warnings, + without upsetting newer glibc. */ + #if defined __OPTIMIZE__ && __OPTIMIZE__ +- # define _FORTIFY_SOURCE 2 ++ # ifndef _FORTIFY_SOURCE ++ # define _FORTIFY_SOURCE 2 ++ # endif + #endif + ]) + fi +--- a/lib/config.hin ++++ b/lib/config.hin +@@ -198,7 +198,9 @@ + /* Enable compile-time and run-time bounds-checking, and some warnings, + without upsetting newer glibc. */ + #if defined __OPTIMIZE__ && __OPTIMIZE__ +- # define _FORTIFY_SOURCE 2 ++ # ifndef _FORTIFY_SOURCE ++ # define _FORTIFY_SOURCE 2 ++ # endif + #endif + + |