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simplify/optimize iconv utf-8 case

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the special case where mbrtowc returns 0 but consumed 1 byte of input
does not need to be considered, because the short-circuit for low
bytes already covered that case.
This commit is contained in:
Rich Felker
2017-11-10 13:40:12 -05:00
parent 9eb6dd5165
commit 0df5b39a1e
1 changed files with 3 additions and 4 deletions
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7
src/locale/iconv.c
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@@ -195,11 +195,10 @@ size_t iconv(iconv_t cd, char **restrict in, size_t *restrict inb, char **restri
switch (type) {
case UTF_8:
if (c < 128) break; // optimization
if (c < 128) break;
l = mbrtowc_utf8(&wc, *in, *inb, &st);
if (!l) l++;
else if (l == (size_t)-1) goto ilseq;
else if (l == (size_t)-2) goto starved;
if (l == (size_t)-1) goto ilseq;
if (l == (size_t)-2) goto starved;
c = wc;
break;
case US_ASCII: