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Do not parse sign if a sign is not the next legal character when parsing floating point from an input stream. Fixes http://llvm.org/bugs/show_bug.cgi?id=11871

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@150609 91177308-0d34-0410-b5e6-96231b3b80d8
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Howard Hinnant
2012-02-15 19:19:37 +00:00
parent d7a2ad6a99
commit b04ad4162d
3 changed files with 33 additions and 0 deletions
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9
include/locale
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@@ -665,6 +665,15 @@ __num_get<_CharT>::__stage2_float_loop(_CharT __ct, bool& __in_units, char& __ex
if (__f >= 32)
return -1;
char __x = __src[__f];
if (__x == '-' || __x == '+')
{
if (__a_end == __a || (__a_end[-1] & 0xDF) == __exp)
{
*__a_end++ = __x;
return 0;
}
return -1;
}
if (__a_end-__a < __num_get_buf_sz - 1)
*__a_end++ = __x;
if (__x == 'x' || __x == 'X')