diff options
Diffstat (limited to 'Objects/stringlib/codecs.h')
| -rw-r--r-- | Objects/stringlib/codecs.h | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/Objects/stringlib/codecs.h b/Objects/stringlib/codecs.h index b6ca404..b17cda1 100644 --- a/Objects/stringlib/codecs.h +++ b/Objects/stringlib/codecs.h @@ -26,7 +26,6 @@ STRINGLIB(utf8_decode)(const char **inptr, const char *end, { Py_UCS4 ch; const char *s = *inptr; - const char *aligned_end = (const char *) _Py_ALIGN_DOWN(end, SIZEOF_SIZE_T); STRINGLIB_CHAR *p = dest + *outpos; while (s < end) { @@ -40,11 +39,11 @@ STRINGLIB(utf8_decode)(const char **inptr, const char *end, First, check if we can do an aligned read, as most CPUs have a penalty for unaligned reads. */ - if (_Py_IS_ALIGNED(s, SIZEOF_SIZE_T)) { + if (_Py_IS_ALIGNED(s, ALIGNOF_SIZE_T)) { /* Help register allocation */ const char *_s = s; STRINGLIB_CHAR *_p = p; - while (_s < aligned_end) { + while (_s + SIZEOF_SIZE_T <= end) { /* Read a whole size_t at a time (either 4 or 8 bytes), and do a fast unrolled copy if it only contains ASCII characters. */ @@ -496,8 +495,6 @@ STRINGLIB(utf16_decode)(const unsigned char **inptr, const unsigned char *e, int native_ordering) { Py_UCS4 ch; - const unsigned char *aligned_end = - (const unsigned char *) _Py_ALIGN_DOWN(e, SIZEOF_LONG); const unsigned char *q = *inptr; STRINGLIB_CHAR *p = dest + *outpos; /* Offsets from q for retrieving byte pairs in the right order. */ @@ -512,10 +509,10 @@ STRINGLIB(utf16_decode)(const unsigned char **inptr, const unsigned char *e, Py_UCS4 ch2; /* First check for possible aligned read of a C 'long'. Unaligned reads are more expensive, better to defer to another iteration. */ - if (_Py_IS_ALIGNED(q, SIZEOF_LONG)) { + if (_Py_IS_ALIGNED(q, ALIGNOF_LONG)) { /* Fast path for runs of in-range non-surrogate chars. */ const unsigned char *_q = q; - while (_q < aligned_end) { + while (_q + SIZEOF_LONG <= e) { unsigned long block = * (const unsigned long *) _q; if (native_ordering) { /* Can use buffer directly */ |