[Python-checkins] python/dist/src/Lib/test test_peepholer.py, 1.3, 1.4

Tue Oct 26 10:59:16 CEST 2004

Update of /cvsroot/python/python/dist/src/Lib/test
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv15896/Lib/test
Modified Files:
	test_peepholer.py 
Log Message:
SF bug #1053819: Segfault in tuple_of_constants
Peepholer could be fooled into misidentifying a tuple_of_constants.
Added code to count consecutive occurrences of LOAD_CONST.
Use the count to weed out the misidentified cases.
Added a unittest.
Index: test_peepholer.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/test/test_peepholer.py,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -d -r1.3 -r1.4

--- test_peepholer.py	22 Sep 2004 18:44:08 -0000	1.3
+++ test_peepholer.py	26 Oct 2004 08:59:14 -0000	1.4
@@ -83,6 +83,23 @@
 self.assert_(elem in asm)
 self.assert_('BUILD_TUPLE' not in asm)
 
+ # Bug 1053819: Tuple of constants misidentified when presented with:
+ # . . . opcode_with_arg 100 unary_opcode BUILD_TUPLE 1 . . .
+ # The following would segfault upon compilation
+ def crater():
+ (~[
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ ],)
+
 def test_elim_extra_return(self):
 # RETURN LOAD_CONST None RETURN --> RETURN
 def f(x):
