https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86560
--- Comment #4 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Thu Jul 19 12:00:59 2018 New Revision: 262878 URL: https://gcc.gnu.org/viewcvs?rev=262878&root=gcc&view=rev Log: i386: Test __has_attribute (__indirect_return__) The new indirect_return attribute is intended to mark swapcontext in <ucontext.h>. Test __has_attribute (__indirect_return__) so that it can be backported to GCC 8. PR target/86560 * gcc.target/i386/pr86560-4.c: New test. * gcc.target/i386/pr86560-5.c: Likewise. --- gcc/testsuite/gcc.target/i386/pr86560-4.c | 21 +++++++++++++++++++++ gcc/testsuite/gcc.target/i386/pr86560-5.c | 21 +++++++++++++++++++++ 2 files changed, 42 insertions(+) create mode 100644 gcc/testsuite/gcc.target/i386/pr86560-4.c create mode 100644 gcc/testsuite/gcc.target/i386/pr86560-5.c diff --git a/gcc/testsuite/gcc.target/i386/pr86560-4.c b/gcc/testsuite/gcc.target/i386/pr86560-4.c new file mode 100644 index 00000000000..a623e3dcbeb --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr86560-4.c @@ -0,0 +1,21 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fcf-protection" } */ +/* { dg-final { scan-assembler-times {\mendbr} 2 } } */ + +struct ucontext; + +extern int (*bar) (struct ucontext *) +#ifdef __has_attribute +# if __has_attribute (indirect_return) + __attribute__((__indirect_return__)) +# endif +#endif +; + +extern int res; + +void +foo (struct ucontext *oucp) +{ + res = bar (oucp); +} diff --git a/gcc/testsuite/gcc.target/i386/pr86560-5.c b/gcc/testsuite/gcc.target/i386/pr86560-5.c new file mode 100644 index 00000000000..33b0f6424c2 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr86560-5.c @@ -0,0 +1,21 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fcf-protection" } */ +/* { dg-final { scan-assembler-times {\mendbr} 2 } } */ + +struct ucontext; + +extern int (*bar) (struct ucontext *) +#ifdef __has_attribute +# if __has_attribute (__indirect_return__) + __attribute__((__indirect_return__)) +# endif +#endif +; + +extern int res; + +void +foo (struct ucontext *oucp) +{ + res = bar (oucp); +}
