diff options
Diffstat (limited to 'newlib/libc/include/sys/features.h')
| -rw-r--r-- | newlib/libc/include/sys/features.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/newlib/libc/include/sys/features.h b/newlib/libc/include/sys/features.h index a7d4bc5..6a925c8 100644 --- a/newlib/libc/include/sys/features.h +++ b/newlib/libc/include/sys/features.h @@ -104,7 +104,7 @@ extern "C" { * _DEFAULT_SOURCE (or none of the above) * POSIX-1.2008 with BSD and SVr4 extensions * - * _FORTIFY_SOURCE = 1 or 2 + * _FORTIFY_SOURCE = 1, 2 or 3 * Object Size Checking function wrappers */ @@ -247,7 +247,7 @@ extern "C" { * GNU extensions; enabled with _GNU_SOURCE. * * __SSP_FORTIFY_LEVEL - * Object Size Checking; defined to 0 (off), 1, or 2. + * Object Size Checking; defined to 0 (off), 1, 2 or 3. * * In all cases above, "enabled by default" means either by defining * _DEFAULT_SOURCE, or by not defining any of the public feature test macros. @@ -335,7 +335,13 @@ extern "C" { #if _FORTIFY_SOURCE > 0 && !defined(__cplusplus) && !defined(__lint__) && \ (__OPTIMIZE__ > 0 || defined(__clang__)) && __GNUC_PREREQ__(4, 1) && \ !defined(_LIBC) -# if _FORTIFY_SOURCE > 1 +# if _FORTIFY_SOURCE > 2 && defined(__has_builtin) +# if __has_builtin(__builtin_dynamic_object_size) +# define __SSP_FORTIFY_LEVEL 3 +# else +# define __SSP_FORTIFY_LEVEL 2 +# endif +# elif _FORTIFY_SOURCE > 1 # define __SSP_FORTIFY_LEVEL 2 # else # define __SSP_FORTIFY_LEVEL 1 |