diff options
Diffstat (limited to 'main/gcc/010_all_default-fortify-source.patch')
| -rw-r--r-- | main/gcc/010_all_default-fortify-source.patch | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/main/gcc/010_all_default-fortify-source.patch b/main/gcc/010_all_default-fortify-source.patch new file mode 100644 index 000000000..ad2f2b1c2 --- /dev/null +++ b/main/gcc/010_all_default-fortify-source.patch @@ -0,0 +1,29 @@ +Enable -D_FORTIFY_SOURCE=2 by default. + + +--- a/gcc/c-family/c-cppbuiltin.c ++++ b/gcc/c-family/c-cppbuiltin.c +@@ -951,6 +951,9 @@ 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 w/optimization. */ ++ cpp_define (pfile, "_FORTIFY_SOURCE=((defined __OPTIMIZE__ && __OPTIMIZE__ > 0) ? 2 : 0)"); ++ + /* Misc. */ + if (flag_gnu89_inline) + cpp_define (pfile, "__GNUC_GNU_INLINE__"); +--- a/gcc/doc/gcc.info ++++ b/gcc/doc/gcc.info +@@ -6255,6 +6255,11 @@ find out the exact set of optimizations that are enabled at each level. + Please note the warning under '-fgcse' about invoking '-O2' on + programs that use computed gotos. + ++ NOTE: In Gentoo, `-D_FORTIFY_SOURCE=2' is set by default, and is ++ activated when `-O' is set to 2 or higher. This enables additional ++ compile-time and run-time checks for several libc functions. To disable, ++ specify either `-U_FORTIFY_SOURCE' or `-D_FORTIFY_SOURCE=0'. ++ + '-O3' + Optimize yet more. '-O3' turns on all optimizations specified by + '-O2' and also turns on the '-finline-functions', |