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Don't touch begin iterator (pointer) if begin == end.

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Fixes #2661.
This commit is contained in:
David P. Sicilia 2021-12-17 11:50:25 -05:00
parent 35f60377aa
commit e98129ec38
1 changed files with 2 additions and 2 deletions
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4
include/fmt/core.h
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@ -2482,6 +2482,8 @@ FMT_CONSTEXPR FMT_INLINE auto parse_format_specs(const Char* begin,
const Char* end,
SpecHandler&& handler)
-> const Char* {
if (begin == end) return begin;
if (begin + 1 < end && begin[1] == '}' && is_ascii_letter(*begin) &&
*begin != 'L') {
presentation_type type = parse_presentation_type(*begin++);
@ -2491,8 +2493,6 @@ FMT_CONSTEXPR FMT_INLINE auto parse_format_specs(const Char* begin,
return begin;
}
if (begin == end) return begin;
begin = parse_align(begin, end, handler);
if (begin == end) return begin;