[BUG]

[dhairyarungta]

Unable to build on Mac M1 OSX Sonoma, using gcc version 13.2.0 (Homebrew GCC 13.2.0).

benchmark/src/sysinfo.cc:739:39: warning: conversion from 'long long unsigned int' to 'double' may change value [-Wconversion] 739 | if (GetSysctl(freqStr, &hz)) return hz;

Steps to reproduce the behavior: cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=g++ -DCMAKE_C_COMPILER=gcc ../ The above command ran successfully. Result of run in file1.txt

cmake --build "build" --config Release --parallel 4 produces this warning which terminates the build benchmark/src/sysinfo.cc:739:39: warning: conversion from 'long long unsigned int' to 'double' may change value [-Wconversion] 739 | if (GetSysctl(freqStr, &hz)) return hz; result of run in file2.txt and CMakeCache.txt in CMakeCache.txt

I edited CMakeCache.txt, and set Werror to OFF. //Build Release candidates with -Werror. BENCHMARK_ENABLE_WERROR:BOOL=OFF

file2.txt

CMakeCache.txt file1.txt

The library got built with the warning and no other warnings, but I cannot figure out what was the real problem. I was able to successfully build the library with clang++, clang without any warnings or errors.

[LebedevRI]

Please feel free to submit a patch for https://github.com/google/benchmark/blob/f3ec7b8820ca8136c4e1dad4552608b51b47831a/src/sysinfo.cc#L739

-  if (GetSysctl(freqStr, &hz)) return hz;
+  if (GetSysctl(freqStr, &hz)) return static_cast<double>(hz);

[dhairyarungta]

Pull request raised.