Enable _FORTIFY_SOURCE=3 for gcc 12 and above

gcc 12 now has support for the __builtin_dynamic_object_size builtin.
Adapt the macro checks to enable _FORTIFY_SOURCE=3 on gcc 12 and above.

Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

diff --git a/include/features.h b/include/features.h
index 2d4debbe247b947d7f119f57f7272dd8c0dabd21..ab2b2caac4354799821da013edb7b5535ebdcbfa 100644 (file)
--- a/include/features.h
+++ b/include/features.h
@@ -412,7 +412,9 @@
 #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
 # elif !__GNUC_PREREQ (4, 1)
 #  warning _FORTIFY_SOURCE requires GCC 4.1 or later
-# elif _FORTIFY_SOURCE > 2 && __glibc_clang_prereq (9, 0)
+# elif _FORTIFY_SOURCE > 2 && (__glibc_clang_prereq (9, 0)                   \
+                              || __GNUC_PREREQ (12, 0))
+
 #  if _FORTIFY_SOURCE > 3
 #   warning _FORTIFY_SOURCE > 3 is treated like 3 on this platform
 #  endif

diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index abf13a90862b6e9123c96c1ea05dfa849fa007c0..44d3826bca9f6f84f862acf1035408a587fac71d 100644 (file)
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -143,7 +143,8 @@
 #define __bos0(ptr) __builtin_object_size (ptr, 0)
 
 /* Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.  */
-#if __USE_FORTIFY_LEVEL == 3 && __glibc_clang_prereq (9, 0)
+#if __USE_FORTIFY_LEVEL == 3 && (__glibc_clang_prereq (9, 0)                 \
+                                || __GNUC_PREREQ (12, 0))
 # define __glibc_objsize0(__o) __builtin_dynamic_object_size (__o, 0)
 # define __glibc_objsize(__o) __builtin_dynamic_object_size (__o, 1)
 #else