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Revert "Prevent overflow beyond the end of string for wtf to wcs macros"

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This reverts commit b4d27ba5cc.
This commit is contained in:
Tatsuya Kinoshita
2016-12-15 23:25:09 +09:00
parent 6eea841d3a
commit 922d6f7901
1 changed files with 2 additions and 4 deletions
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6
libwc/wtf.c
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@@ -173,17 +173,15 @@ wtf_type(wc_uchar *p)
((p)[3] = (((c) >> 7) & 0x7f) | 0x80), \
((p)[4] = ( (c) & 0x7f) | 0x80)
#define wtf_to_wcs16(p) \
(strlen(p) < 3 ? 0 : \
((wc_uint32)((p)[0] & 0x03) << 14) \
| ((wc_uint32)((p)[1] & 0x7f) << 7) \
| ((wc_uint32)((p)[2] & 0x7f) ))
| ((wc_uint32)((p)[2] & 0x7f) )
#define wtf_to_wcs32(p) \
(strlen(p) < 5 ? 0 : \
((wc_uint32)((p)[0] & 0x0f) << 28) \
| ((wc_uint32)((p)[1] & 0x7f) << 21) \
| ((wc_uint32)((p)[2] & 0x7f) << 14) \
| ((wc_uint32)((p)[3] & 0x7f) << 7) \
| ((wc_uint32)((p)[4] & 0x7f) ))
| ((wc_uint32)((p)[4] & 0x7f) )
void
wtf_push(Str os, wc_ccs ccs, wc_uint32 code)