[git commit branch/0.9.33] arm: workaround GCC PR target/53735 with fork()

[Bernhard Reutner-Fischer]

commit: http://git.uclibc.org/uClibc/commit/?id=bbbefccc18a5df2fbbc3e91841879fc2c7df1f88
branch: http://git.uclibc.org/uClibc/commit/?id=refs/heads/0.9.33

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop at gmail.com>
---
 libpthread/nptl/sysdeps/unix/sysv/linux/fork.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/fork.c b/libpthread/nptl/sysdeps/unix/sysv/linux/fork.c
index 6ad9053..6b69635 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/fork.c
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/fork.c
@@ -60,6 +60,10 @@ fresetlockfiles (void)
 
 extern __typeof(fork) __libc_fork;
 pid_t
+#if defined __arm__ && defined __thumb__ && __GNUC_PREREQ (4,6) && !__GNUC_PREREQ (4,8)
+/* GCC PR target/53735 */
+attribute_optimize("O2")
+#endif
 __libc_fork (void)
 {
   pid_t pid;