[patch, testsuite] fix problems in gdb.base/paginate-bg-execution.exp

[Sandra Loosemore <sandra@codesourcery.com>]

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This patch addresses a couple of problems in 
gdb.base/paginate-bg-execution.exp:

(1) A different "Quit" message can appear in some cases, e.g. if GDB 
thinks the terminal doesn't support job control -- see the definition of 
quit in utils.c.  The specific situation where I tripped over this was 
running GDB in a CMD.EXE shell on a remote Windows host via ssh -T.

(2) The test was sending a ^C interrupt without testing whether the 
target had the nointerrupts property set.

OK to commit?  (I'm not sure this one qualifies as obvious.)

-Sandra


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2015-09-18  Sandra Loosemore  <sandra@codesourcery.com>

	gdb/testsuite/
	* gdb.base/paginate-bg-execution.exp: Accept alternate "Quit"
	message.  Skip ^C test if target has nointerrupts set.

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diff --git a/gdb/testsuite/gdb.base/paginate-bg-execution.exp b/gdb/testsuite/gdb.base/paginate-bg-execution.exp
index f7437ac..7b96df7 100644
--- a/gdb/testsuite/gdb.base/paginate-bg-execution.exp
+++ b/gdb/testsuite/gdb.base/paginate-bg-execution.exp
@@ -104,6 +104,11 @@ proc test_bg_execution_pagination_cancel { how } {
 	    -re "Quit\r\n$gdb_prompt $" {
 		pass $test
 	    }
+	    # This variant can show up e.g. in remote testing via ssh -T,
+	    # so that GDB has no terminal.
+	    -re "Quit (expect signal SIGINT when the program is resumed)\r\n$gdb_prompt $" {
+		pass $test
+	    }
 	}
 
 	gdb_test "p 1" " = 1" "GDB accepts further input"
@@ -114,5 +119,7 @@ proc test_bg_execution_pagination_cancel { how } {
 }
 
 test_bg_execution_pagination_return
-test_bg_execution_pagination_cancel "ctrl-c"
+if ![target_info exists gdb,nointerrupts] {
+    test_bg_execution_pagination_cancel "ctrl-c"
+}
 test_bg_execution_pagination_cancel "quit"