On 06/27/2017 02:56 PM, Joseph Myers wrote:
>> +/* Userlevel context. */
>> +typedef struct ucontext
>> + {
>> + unsigned long uc_flags;
>> + struct ucontext *uc_link;
> This is now struct ucontext_t.
Isn't this an ABI change. After making change as you suggested, building
gcc/libgcc itself fails now as the ARC libgcc unwinder expects ucontext.
#define MD_FALLBACK_FRAME_STATE_FOR arc_fallback_frame_state
static __attribute__((noinline)) _Unwind_Reason_Code
arc_fallback_frame_state (struct _Unwind_Context *context,
_Unwind_FrameState *fs)
{
struct rt_sigframe {
siginfo_t info;
struct ucontext uc;
unsigned int sigret_magic;
};
Can we atleast define a preprocessor macro to indicate this ABI change so
downstream projects can support both things in short term ?
I see other threads on mailing list about distros being notifed etc of this ...
-Vineet
