[PATCH] MIPS/GDB/linux-nat.c: Fix a child detach condition for uClibc-ng

[Sergey Korolev <s.korolev@ndmsystems.com>]

Current implementation expects that WIFSTOPPED (W_STOPCODE (0)) is true,
but in the uClibc-ng it is false on MIPS. The patch adds a "detach"
helper variable to avoid this corner case: WIFSTOPPED applied
only to a status filled by a waitpid call that should never return
the status with zero stop signal.
---
 gdb/linux-nat.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index 445b59fa4a..916de2d335 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -468,6 +468,7 @@ linux_nat_target::follow_fork (int follow_child, int
detach_fork)
       /* Detach new forked process?  */
       if (detach_fork)
  {
+   int detach = 1;
    struct cleanup *old_chain = make_cleanup (delete_lwp_cleanup,
      child_lp);

@@ -492,9 +493,11 @@ linux_nat_target::follow_fork (int follow_child, int
detach_fork)
  perror_with_name (_("Couldn't do single step"));
        if (my_waitpid (child_pid, &status, 0) < 0)
  perror_with_name (_("Couldn't wait vfork process"));
+       else
+ detach = WIFSTOPPED (status);
      }

-   if (WIFSTOPPED (status))
+   if (detach)
      {
        int signo;

-- 
2.11.0