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authorBenjamin Peterson <benjamin@python.org>2013-05-17 22:35:28 (GMT)
committerBenjamin Peterson <benjamin@python.org>2013-05-17 22:35:28 (GMT)
commit48953632dfd3e78c4eee8be907a0b7900f46fa8c (patch)
tree43622878bddb1236d96180862cedeea72eaa6b9b
parent3e269397e39d2d60a1b74c338a7d321852d71b85 (diff)
parentd2b58a9880d119b20e1fc1c82a3e2e2d9eaa0817 (diff)
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merge 3.3
-rw-r--r--Lib/test/test_unicode.py2
-rw-r--r--Misc/NEWS3
-rw-r--r--Objects/stringlib/unicode_format.h10
3 files changed, 13 insertions, 2 deletions
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index 6a646a0..6680f74 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -943,6 +943,8 @@ class UnicodeTest(string_tests.CommonTest,
self.assertEqual("{0:.0s}".format("ABC\u0410\u0411\u0412"),
'')
+ self.assertEqual("{[{}]}".format({"{}": 5}), "5")
+
def test_format_map(self):
self.assertEqual(''.format_map({}), '')
self.assertEqual('a'.format_map({}), 'a')
diff --git a/Misc/NEWS b/Misc/NEWS
index 716378a..68902e5 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -13,6 +13,9 @@ Core and Builtins
- Issue #12370: Prevent class bodies from interfering with the __class__
closure.
+- Issue #17644: Fix a crash in str.format when curly braces are used in square
+ brackets.
+
- Issue #17237: Fix crash in the ASCII decoder on m68k.
- Issue #17927: Frame objects kept arguments alive if they had been
diff --git a/Objects/stringlib/unicode_format.h b/Objects/stringlib/unicode_format.h
index 9429169..b01d756 100644
--- a/Objects/stringlib/unicode_format.h
+++ b/Objects/stringlib/unicode_format.h
@@ -638,7 +638,7 @@ MarkupIterator_next(MarkupIterator *self, SubString *literal,
SubString *format_spec, Py_UCS4 *conversion,
int *format_spec_needs_expanding)
{
- int at_end;
+ int at_end, hit_format_spec;
Py_UCS4 c = 0;
Py_ssize_t start;
int count;
@@ -723,12 +723,18 @@ MarkupIterator_next(MarkupIterator *self, SubString *literal,
/* we know we can't have a zero length string, so don't worry
about that case */
+ hit_format_spec = 0;
while (self->str.start < self->str.end) {
switch (c = PyUnicode_READ_CHAR(self->str.str, self->str.start++)) {
+ case ':':
+ hit_format_spec = 1;
+ count = 1;
+ break;
case '{':
/* the format spec needs to be recursively expanded.
this is an optimization, and not strictly needed */
- *format_spec_needs_expanding = 1;
+ if (hit_format_spec)
+ *format_spec_needs_expanding = 1;
count++;
break;
case '}':