gdb/gdb-6.8-quit-never-aborts.patch

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We may abort the process of detaching threads with multiple SIGINTs - which are
being sent during a testcase terminating its child GDB.
Some of the threads may not be properly PTRACE_DETACHed which hurts if they
should have been detached with SIGSTOP (as they are accidentally left running
on the debugger termination).
Index: gdb-7.2.50.20110117/gdb/defs.h
===================================================================
--- gdb-7.2.50.20110117.orig/gdb/defs.h 2011-01-17 15:47:37.000000000 +0100
+++ gdb-7.2.50.20110117/gdb/defs.h 2011-01-17 15:53:05.000000000 +0100
@@ -165,6 +165,7 @@ extern char *python_libdir;
extern char *debug_file_directory;
extern int quit_flag;
+extern int quit_flag_cleanup;
extern int immediate_quit;
extern int sevenbit_strings;
@@ -178,7 +179,7 @@ extern void quit (void);
needed. */
#define QUIT { \
- if (quit_flag) quit (); \
+ if (quit_flag && !quit_flag_cleanup) quit (); \
if (deprecated_interactive_hook) deprecated_interactive_hook (); \
}
Index: gdb-7.2.50.20110117/gdb/event-top.c
===================================================================
--- gdb-7.2.50.20110117.orig/gdb/event-top.c 2011-01-17 15:52:39.000000000 +0100
+++ gdb-7.2.50.20110117/gdb/event-top.c 2011-01-17 15:52:49.000000000 +0100
@@ -904,7 +904,7 @@ async_request_quit (gdb_client_data arg)
is no reason to call quit again here, unless immediate_quit is
set. */
- if (quit_flag || immediate_quit)
+ if ((quit_flag || immediate_quit) && !quit_flag_cleanup)
quit ();
}
Index: gdb-7.2.50.20110117/gdb/top.c
===================================================================
--- gdb-7.2.50.20110117.orig/gdb/top.c 2011-01-17 15:47:37.000000000 +0100
+++ gdb-7.2.50.20110117/gdb/top.c 2011-01-17 15:52:49.000000000 +0100
@@ -1257,7 +1257,9 @@ quit_force (char *args, int from_tty)
qt.args = args;
qt.from_tty = from_tty;
- /* We want to handle any quit errors and exit regardless. */
+ /* We want to handle any quit errors and exit regardless but we should never
+ get user-interrupted to properly detach the inferior. */
+ quit_flag_cleanup = 1;
catch_errors (quit_target, &qt,
"Quitting: ", RETURN_MASK_ALL);
Index: gdb-7.2.50.20110117/gdb/utils.c
===================================================================
--- gdb-7.2.50.20110117.orig/gdb/utils.c 2011-01-17 15:47:37.000000000 +0100
+++ gdb-7.2.50.20110117/gdb/utils.c 2011-01-17 15:52:49.000000000 +0100
@@ -121,6 +121,11 @@ int job_control;
int quit_flag;
+/* Nonzero means we are already processing the quitting cleanups and we should
+ no longer get aborted. */
+
+int quit_flag_cleanup;
+
/* Nonzero means quit immediately if Control-C is typed now, rather
than waiting until QUIT is executed. Be careful in setting this;
code which executes with immediate_quit set has to be very careful