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| author | Benjamin Peterson <benjamin@python.org> | 2009-10-29 01:49:07 +0000 |
|---|---|---|
| committer | Benjamin Peterson <benjamin@python.org> | 2009-10-29 01:49:07 +0000 |
| commit | ea0e3b0d60b075e6d5cb09dcd83fd86e828612cb (patch) | |
| tree | 4a8d50b06b8296e6dc9175e7ada7bfe4bb616a9a /Python/ast.c | |
| parent | a7d44001b1f4c3a61c8c96e805034653e268122d (diff) | |
| download | cpython-git-ea0e3b0d60b075e6d5cb09dcd83fd86e828612cb.tar.gz | |
do a backport of r75928
The added test does not fail without the patch, but we still fix the issue of
surrogates being used in wide builds where they should not be.
Diffstat (limited to 'Python/ast.c')
| -rw-r--r-- | Python/ast.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/Python/ast.c b/Python/ast.c index 347da2aa95..7f379a5957 100644 --- a/Python/ast.c +++ b/Python/ast.c @@ -3289,10 +3289,11 @@ decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, cons u = NULL; } else { /* check for integer overflow */ - if (len > PY_SIZE_MAX / 4) + if (len > PY_SIZE_MAX / 6) return NULL; - /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ - u = PyString_FromStringAndSize((char *)NULL, len * 4); + /* "<C3><A4>" (2 bytes) may become "\U000000E4" (10 bytes), or 1:5 + "\รค" (3 bytes) may become "\u005c\U000000E4" (16 bytes), or ~1:6 */ + u = PyString_FromStringAndSize((char *)NULL, len * 6); if (u == NULL) return NULL; p = buf = PyString_AsString(u); @@ -3309,19 +3310,21 @@ decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, cons PyObject *w; char *r; Py_ssize_t rn, i; - w = decode_utf8(c, &s, end, "utf-16-be"); + w = decode_utf8(c, &s, end, "utf-32-be"); if (w == NULL) { Py_DECREF(u); return NULL; } r = PyString_AsString(w); rn = PyString_Size(w); - assert(rn % 2 == 0); - for (i = 0; i < rn; i += 2) { - sprintf(p, "\\u%02x%02x", + assert(rn % 4 == 0); + for (i = 0; i < rn; i += 4) { + sprintf(p, "\\U%02x%02x%02x%02x", r[i + 0] & 0xFF, - r[i + 1] & 0xFF); - p += 6; + r[i + 1] & 0xFF, + r[i + 2] & 0xFF, + r[i + 3] & 0xFF); + p += 10; } Py_DECREF(w); } else { |