llama : C++20 compatibility for u8 strings #8408
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Green-Sky
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Jul 10, 2024
| #if __cplusplus >= 202000L | ||
| #define LU8(x) (const char*)(u8##x) | ||
| #else | ||
| #define LU8(x) u8##x |
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why prefix the macro with L ? , that makes it seem like it is a wide string.
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as in llama, could be T as well. I wanted three characters to minimize the risk of collisions, as simply U8 looks risky.
Green-Sky
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Jul 10, 2024
| #endif | ||
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| #if __cplusplus >= 202000L | ||
| #define LU8(x) (const char*)(u8##x) |
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you should use a proper cast, instead of a c-style one.
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Why? It's not like there are any "proper" casts in the file itself. All other casts are C-style.
ggerganov
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Jul 10, 2024
Nexesenex
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arthw
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This PR fixes the compilation errors when compiling with C++20 (which may come from above incase llama.cpp is a subdir)
In C++20
char8_tis distinct fromchar. That's whyu8"string"(beingconst char8_t*) cannot be implicitly cast toconst char*. The PR adds a macro which performs the explicit cast if necessary