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| author | davidovski <david@davidovski.xyz> | 2022-05-31 11:05:19 +0100 |
|---|---|---|
| committer | davidovski <david@davidovski.xyz> | 2022-05-31 11:05:19 +0100 |
| commit | 48ca75555522716f0f686dcae3dd6cf3d8ad714d (patch) | |
| tree | 00c0f58550ba4661e87376f2f02c8001c69bae44 /repo/gcc/0004-Turn-on-D_FORTIFY_SOURCE-2-by-default-for-C-C-ObjC-O.patch | |
| parent | 871b2b573f01c1b3176a0f65458b3d281b41c437 (diff) | |
removed idea of repos
Diffstat (limited to 'repo/gcc/0004-Turn-on-D_FORTIFY_SOURCE-2-by-default-for-C-C-ObjC-O.patch')
| -rw-r--r-- | repo/gcc/0004-Turn-on-D_FORTIFY_SOURCE-2-by-default-for-C-C-ObjC-O.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/repo/gcc/0004-Turn-on-D_FORTIFY_SOURCE-2-by-default-for-C-C-ObjC-O.patch b/repo/gcc/0004-Turn-on-D_FORTIFY_SOURCE-2-by-default-for-C-C-ObjC-O.patch new file mode 100644 index 0000000..4b87403 --- /dev/null +++ b/repo/gcc/0004-Turn-on-D_FORTIFY_SOURCE-2-by-default-for-C-C-ObjC-O.patch @@ -0,0 +1,46 @@ +From 3c848f2fbde81db336ec97d9be7a5a4a05015eef Mon Sep 17 00:00:00 2001 +From: Ariadne Conill <ariadne@dereferenced.org> +Date: Fri, 21 Aug 2020 06:46:22 +0000 +Subject: [PATCH] Turn on -D_FORTIFY_SOURCE=2 by default for C, C++, ObjC, + ObjC++, if the optimization level is > 0 + +--- + gcc/c-family/c-cppbuiltin.c | 4 ++++ + gcc/doc/invoke.texi | 6 ++++++ + 2 files changed, 10 insertions(+) + +diff --git a/gcc/c-family/c-cppbuiltin.c b/gcc/c-family/c-cppbuiltin.c +index db91a36794a..ed976c71404 100644 +--- a/gcc/c-family/c-cppbuiltin.c ++++ b/gcc/c-family/c-cppbuiltin.c +@@ -1385,6 +1385,10 @@ c_cpp_builtins (cpp_reader *pfile) + builtin_define_with_value ("__REGISTER_PREFIX__", REGISTER_PREFIX, 0); + builtin_define_with_value ("__USER_LABEL_PREFIX__", user_label_prefix, 0); + ++ /* Fortify Source enabled by default for optimization levels > 0 */ ++ if (optimize) ++ builtin_define_with_int_value ("_FORTIFY_SOURCE", 2); ++ + /* Misc. */ + if (flag_gnu89_inline) + cpp_define (pfile, "__GNUC_GNU_INLINE__"); +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi +index 17d371ef432..fe793ac08db 100644 +--- a/gcc/doc/invoke.texi ++++ b/gcc/doc/invoke.texi +@@ -9230,6 +9230,12 @@ also turns on the following optimization flags: + Please note the warning under @option{-fgcse} about + invoking @option{-O2} on programs that use computed gotos. + ++NOTE: In Alpine Linux, @option{-D_FORTIFY_SOURCE=2} is ++set by default, and is activated when @option{-O} is set to 2 or higher. ++This enables additional compile-time and run-time checks for several libc ++functions. To disable, specify either @option{-U_FORTIFY_SOURCE} or ++@option{-D_FORTIFY_SOURCE=0}. ++ + @item -O3 + @opindex O3 + Optimize yet more. @option{-O3} turns on all optimizations specified +-- +2.31.1 + |