Prevent lingering traps after detach

There can sometimes be a pending SIGTRAP when we resume a thread.  This
is usually due to interrupting a hung single-step.  If this trap is hit
after the debugger leaves, the original process will crash.  This is a
quick workaround to attempt to consume such traps ourselves before
detaching.

Signed-off-by: Malfurious <m@lfurio.us>

1 files changed, 3 insertions, 0 deletions

diff --git a/debugger.c b/debugger.c
index 878ce21..46a6a15 100644
--- a/debugger.c
+++ b/debugger.c
@@ -289,6 +289,9 @@ struct process *dbg_attach(pid_t pid, int child) {
 
 int dbg_detach(struct process *proc) {
     interrupt_all_threads(proc);
+    dbg_realcont(proc->threads.head);
+    usleep(100000);
+    interrupt_all_threads(proc);
     uninstall_breakpoints(proc->threads.head);
     free_breakpoints(proc);