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Fix code causing spurious Wstringop-overflow warning

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See #2989, #3054, and others
This commit is contained in:
Alecto Irene Perez
2023-03-03 12:53:25 -05:00
committed by Victor Zverovich
parent 9c5cd998d1
commit d9bc5f1320
2 changed files with 5 additions and 12 deletions
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3
include/fmt/format.h
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@@ -651,7 +651,8 @@ FMT_CONSTEXPR inline auto utf8_decode(const char* s, uint32_t* c, int* e)
constexpr const int shiftc[] = {0, 18, 12, 6, 0};
constexpr const int shifte[] = {0, 6, 4, 2, 0};
int len = code_point_length_impl(*s);
int len = "\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\0\0\0\0\0\0\0\0\2\2\2\2\3\3\4"
[static_cast<unsigned char>(*s) >> 3];
// Compute the pointer to the next character early so that the next
// iteration can start working on the next character. Neither Clang
// nor GCC figure out this reordering on their own.