diff options
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/cjkcodecs/multibytecodec.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/Modules/cjkcodecs/multibytecodec.c b/Modules/cjkcodecs/multibytecodec.c index 087ae9b..435529f 100644 --- a/Modules/cjkcodecs/multibytecodec.c +++ b/Modules/cjkcodecs/multibytecodec.c @@ -182,8 +182,10 @@ expand_encodebuffer(MultibyteEncodeBuffer *buf, Py_ssize_t esize) orgsize = PyBytes_GET_SIZE(buf->outobj); incsize = (esize < (orgsize >> 1) ? (orgsize >> 1) | 1 : esize); - if (orgsize > PY_SSIZE_T_MAX - incsize) + if (orgsize > PY_SSIZE_T_MAX - incsize) { + PyErr_NoMemory(); return -1; + } if (_PyBytes_Resize(&buf->outobj, orgsize + incsize) == -1) return -1; @@ -194,11 +196,11 @@ expand_encodebuffer(MultibyteEncodeBuffer *buf, Py_ssize_t esize) return 0; } -#define REQUIRE_ENCODEBUFFER(buf, s) { \ - if ((s) < 1 || (buf)->outbuf + (s) > (buf)->outbuf_end) \ +#define REQUIRE_ENCODEBUFFER(buf, s) do { \ + if ((s) < 0 || (s) > (buf)->outbuf_end - (buf)->outbuf) \ if (expand_encodebuffer(buf, s) == -1) \ goto errorexit; \ -} +} while(0) /** @@ -332,10 +334,11 @@ multibytecodec_encerror(MultibyteCodec *codec, assert(PyBytes_Check(retstr)); retstrsize = PyBytes_GET_SIZE(retstr); - REQUIRE_ENCODEBUFFER(buf, retstrsize); - - memcpy(buf->outbuf, PyBytes_AS_STRING(retstr), retstrsize); - buf->outbuf += retstrsize; + if (retstrsize > 0) { + REQUIRE_ENCODEBUFFER(buf, retstrsize); + memcpy(buf->outbuf, PyBytes_AS_STRING(retstr), retstrsize); + buf->outbuf += retstrsize; + } newpos = PyLong_AsSsize_t(PyTuple_GET_ITEM(retobj, 1)); if (newpos < 0 && !PyErr_Occurred()) |