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Fix Armin's bug 1333982. He found it, he didn't created it :-) 

This code generated a C assertion:
        assert 1, ([s for s in x] +
                   [s for s in x])
        pass

assert was completely broken, it needed to use the proper block.
compiler_use_block() is now no longer used, so remove it.
This commit is contained in:
Neal Norwitz 2005-12-18 07:06:23 +00:00
parent 0e7a0ed335
commit 51abbc7b4a
2 changed files with 41 additions and 9 deletions
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40
Lib/test/test_dis.py
View File

@ -46,6 +46,43 @@ dis_bug708901 = """\
bug708901.func_code.co_firstlineno + 2,
bug708901.func_code.co_firstlineno + 3)
def bug1333982(x=[]):
assert 0, ([s for s in x] +
1)
pass
dis_bug1333982 = """\
%-4d 0 LOAD_CONST 1 (0)
3 JUMP_IF_TRUE 47 (to 53)
6 POP_TOP
7 LOAD_GLOBAL 0 (AssertionError)
10 BUILD_LIST 0
13 DUP_TOP
14 LOAD_ATTR 1 (append)
17 STORE_FAST 1 (_[1])
20 LOAD_FAST 0 (x)
23 GET_ITER
>> 24 FOR_ITER 16 (to 43)
27 STORE_FAST 2 (s)
30 LOAD_FAST 1 (_[1])
33 LOAD_FAST 2 (s)
36 CALL_FUNCTION 1
39 POP_TOP
40 JUMP_ABSOLUTE 24
>> 43 DELETE_FAST 1 (_[1])
%-4d 46 LOAD_CONST 2 (1)
49 BINARY_ADD
50 RAISE_VARARGS 2
>> 53 POP_TOP
%-4d 54 LOAD_CONST 0 (None)
57 RETURN_VALUE
"""%(bug1333982.func_code.co_firstlineno + 1,
bug1333982.func_code.co_firstlineno + 2,
bug1333982.func_code.co_firstlineno + 3)
class DisTests(unittest.TestCase):
def do_disassembly_test(self, func, expected):
s = StringIO.StringIO()
@ -83,6 +120,9 @@ class DisTests(unittest.TestCase):
def test_bug_708901(self):
self.do_disassembly_test(bug708901, dis_bug708901)
def test_bug_1333982(self):
self.do_disassembly_test(bug1333982, dis_bug1333982)
def test_main():
run_unittest(DisTests)

10
Python/compile.c
View File

@ -171,7 +171,6 @@ static int compiler_addop(struct compiler *, int);
static int compiler_addop_o(struct compiler *, int, PyObject *, PyObject *);
static int compiler_addop_i(struct compiler *, int, int);
static int compiler_addop_j(struct compiler *, int, basicblock *, int);
static void compiler_use_block(struct compiler *, basicblock *);
static basicblock *compiler_use_new_block(struct compiler *);
static int compiler_error(struct compiler *, const char *);
static int compiler_nameop(struct compiler *, identifier, expr_context_ty);
@ -1178,13 +1177,6 @@ compiler_new_block(struct compiler *c)
return b;
}
static void
compiler_use_block(struct compiler *c, basicblock *block)
{
assert (block != NULL);
c->u->u_curblock = block;
}
static basicblock *
compiler_use_new_block(struct compiler *c)
{
@ -2529,7 +2521,7 @@ compiler_assert(struct compiler *c, stmt_ty s)
else {
ADDOP_I(c, RAISE_VARARGS, 1);
}
compiler_use_block(c, end);
compiler_use_next_block(c, end);
ADDOP(c, POP_TOP);
return 1;
}