8000 gh-70278: Fix PyUnicode_FromFormat() with precision for %s and %V by serhiy-storchaka · Pull Request #120365 · python/cpython · GitHub
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gh-70278: Fix PyUnico 8000 de_FromFormat() with precision for %s and %V #120365

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Merged
merged 6 commits into from
Jun 24, 2024
Merged

gh-70278: Fix PyUnicode_FromFormat() with precision for %s and %V #120365

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e969269
gh-70278: Fix PyUnicode_FromFormat() with precision for %s and %V
serhiy-storchaka Jun 11, 2024
6f80f9c
Fix a case when the precision is larger than strlen().
serhiy-storchaka Jun 11, 2024
fdc6d4d
Merge branch 'main' into PyUnicode_FromFormat-truncate
serhiy-storchaka Jun 12, 2024
4000cdf
Add a comment and refactor.
serhiy-storchaka Jun 12, 2024
c628994
Merge branch 'main' into PyUnicode_FromFormat-truncate
serhiy-storchaka Jun 24, 2024
928202a
Merge remote-tracking branch 'refs/remotes/origin/PyUnicode_FromForma…
serhiy-storchaka Jun 24, 2024
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Add a comment and refactor.
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@serhiy-storchaka
serhiy-storchaka committed Jun 12, 2024
commit 4000cdfd192fd9a32e29a120581bfbc79da03019
13 changes: 9 additions & 4 deletions Objects/unicodeobject.c
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Original file line numberDiff line number Diff line change
Expand Up @@ -2389,19 +2389,24 @@ unicode_fromformat_write_utf8(_PyUnicodeWriter *writer, const char *str,
Py_ssize_t width, Py_ssize_t precision, int flags)
{
/* UTF-8 */
Py_ssize_t *pconsumed = NULL;
Py_ssize_t length;
Py_ssize_t consumed;
Py_ssize_t *pconsumed;
if (precision == -1) {
length = strlen(str);
pconsumed = NULL;
}
else {
length = 0;
while (length < precision && str[length]) {
length++;
}
pconsumed = (length < precision) ? NULL : &consumed;
if (length == precision) {
/* The input string is not NUL-terminated. If it ends with an
* incomplete UTF-8 sequence, truncate the string just before it.
* Incomplete sequences in the middle and sequences which cannot
* be valid prefixes are still treated as errors and replaced
* with \xfffd. */
pconsumed = &length;
}
}

if (width < 0) {
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