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GH-131296: fix clang-cl warnings on Windows in blake2module.c #131299

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Mar 15, 2025
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GH-131296: fix clang-cl warnings on Windows in blake2module.c #131299

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4 changes: 2 additions & 2 deletions Modules/blake2module.c
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Original file line number Diff line number Diff line change
Expand Up @@ -92,10 +92,10 @@ void detect_cpu_features(cpu_flags *flags) {
ebx7 = info7[1];
ecx7 = info7[2];
edx7 = info7[3];
#else
#endif
(void) eax1; (void) ebx1; (void) ecx1; (void) edx1;
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LOL... definitely fighting against the compiler's idea of best practices here using useless no-op statements as a way to work around it. i wish we could disable a specific warning for a whole block of code. i feel like a future compiler will notice that these are useless and stop considering them a "use".

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It was just the least minimal change to silence the warning :)

Luckily, I think we'll never have to fear that this will ever need a change: that (void) pattern is adapted by all known compilers for ages - and I think this will stay.

(void) eax7; (void) ebx7; (void) ecx7; (void) edx7;
#endif

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Can you remove the double blank lines L98/L99 please? TiA


flags->avx = (ecx1 & ECX_AVX) != 0;

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