changeset:   97687:2d4aac2ab253
branch:      3.4
parent:      97671:e67bf9c9a898
user:        Terry Jan Reedy <tjreedy@udel.edu>
date:        Sat Sep 05 19:13:26 2015 -0400
files:       Lib/pdb.py Lib/test/test_pdb.py Misc/NEWS
description:
Issue #16180: Exit pdb if file has syntax error, instead of trapping user
in an infinite loop.  Patch by Xavier de Gaye.


diff -r e67bf9c9a898 -r 2d4aac2ab253 Lib/pdb.py
--- a/Lib/pdb.py	Fri Sep 04 17:27:49 2015 +0200
+++ b/Lib/pdb.py	Sat Sep 05 19:13:26 2015 -0400
@@ -1669,6 +1669,9 @@
             # In most cases SystemExit does not warrant a post-mortem session.
             print("The program exited via sys.exit(). Exit status:", end=' ')
             print(sys.exc_info()[1])
+        except SyntaxError:
+            traceback.print_exc()
+            sys.exit(1)
         except:
             traceback.print_exc()
             print("Uncaught exception. Entering post mortem debugging")
diff -r e67bf9c9a898 -r 2d4aac2ab253 Lib/test/test_pdb.py
--- a/Lib/test/test_pdb.py	Fri Sep 04 17:27:49 2015 +0200
+++ b/Lib/test/test_pdb.py	Sat Sep 05 19:13:26 2015 -0400
@@ -1043,6 +1043,18 @@
         self.assertNotIn('Error', stdout.decode(),
                          "Got an error running test script under PDB")
 
+    def test_issue16180(self):
+        # A syntax error in the debuggee.
+        script = "def f: pass\n"
+        commands = ''
+        expected = "SyntaxError:"
+        stdout, stderr = self.run_pdb(script, commands)
+        self.assertIn(expected, stdout,
+            '\n\nExpected:\n{}\nGot:\n{}\n'
+            'Fail to handle a syntax error in the debuggee.'
+            .format(expected, stdout))
+
+
     def tearDown(self):
         support.unlink(support.TESTFN)
 
diff -r e67bf9c9a898 -r 2d4aac2ab253 Misc/NEWS
--- a/Misc/NEWS	Fri Sep 04 17:27:49 2015 +0200
+++ b/Misc/NEWS	Sat Sep 05 19:13:26 2015 -0400
@@ -81,6 +81,9 @@
 Library
 -------
 
+- Issue #16180: Exit pdb if file has syntax error, instead of trapping user
+  in an infinite loop.  Patch by Xavier de Gaye.
+
 - Issue #21112: Fix regression in unittest.expectedFailure on subclasses.
   Patch from Berker Peksag.