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

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We may abort the process of detaching threads with multiple SIGINTs - which are
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being sent during a testcase terminating its child GDB.
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Some of the threads may not be properly PTRACE_DETACHed which hurts if they
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should have been detached with SIGSTOP (as they are accidentally left running
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on the debugger termination).
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Index: gdb-7.5.50.20130118/gdb/defs.h
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===================================================================
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--- gdb-7.5.50.20130118.orig/gdb/defs.h	2013-01-01 07:32:41.000000000 +0100
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+++ gdb-7.5.50.20130118/gdb/defs.h	2013-01-21 16:40:29.889256633 +0100
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@@ -176,6 +176,7 @@ extern int check_quit_flag (void);
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 /* Set the quit flag.  */
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 extern void set_quit_flag (void);
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+extern int quit_flag_cleanup;
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 extern int immediate_quit;
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 extern void quit (void);
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Index: gdb-7.5.50.20130118/gdb/top.c
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===================================================================
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--- gdb-7.5.50.20130118.orig/gdb/top.c	2013-01-21 14:56:12.000000000 +0100
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+++ gdb-7.5.50.20130118/gdb/top.c	2013-01-21 14:56:16.385710056 +0100
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@@ -1329,7 +1329,9 @@ quit_force (char *args, int from_tty)
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   qt.args = args;
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   qt.from_tty = from_tty;
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-  /* We want to handle any quit errors and exit regardless.  */
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+  /* We want to handle any quit errors and exit regardless but we should never
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+     get user-interrupted to properly detach the inferior.  */
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+  quit_flag_cleanup = 1;
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   catch_errors (quit_target, &qt,
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 	        "Quitting: ", RETURN_MASK_ALL);
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Index: gdb-7.5.50.20130118/gdb/utils.c
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===================================================================
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--- gdb-7.5.50.20130118.orig/gdb/utils.c	2013-01-21 14:56:12.000000000 +0100
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+++ gdb-7.5.50.20130118/gdb/utils.c	2013-01-21 16:41:02.225233493 +0100
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@@ -141,6 +141,11 @@ int quit_flag;
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 int immediate_quit;
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+/* Nonzero means we are already processing the quitting cleanups and we should
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+   no longer get aborted.  */
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+
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+int quit_flag_cleanup;
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+
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 #ifndef HAVE_PYTHON
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 /* Clear the quit flag.  */
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@@ -164,6 +169,9 @@ set_quit_flag (void)
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 int
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 check_quit_flag (void)
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 {
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+  if (quit_flag_cleanup)
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+    return 0;
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+
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   /* This is written in a particular way to avoid races.  */
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   if (quit_flag)
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     {
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Index: gdb-7.5.50.20130118/gdb/python/python.c
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===================================================================
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--- gdb-7.5.50.20130118.orig/gdb/python/python.c	2013-01-21 16:39:03.000000000 +0100
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+++ gdb-7.5.50.20130118/gdb/python/python.c	2013-01-21 16:39:30.698299142 +0100
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@@ -181,6 +181,9 @@ set_quit_flag (void)
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 int
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 check_quit_flag (void)
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 {
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+  if (quit_flag_cleanup)
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+    return 0;
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+
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   return PyOS_InterruptOccurred ();
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 }
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