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Build failure on Macos 15.4 #126

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Build failure on Macos 15.4#126
@foolnotion

Description

@foolnotion
foolnotion
opened on Apr 8, 2025

Hi,

I am trying to compile nanobench on macos-15.4 with clang-19.1.7 (although 20.1.2 also fails) and am encountering some issues:

  1. somehow all warnings are treated as errors despite passing -DNB_sanitizer=OFF. My solution to get it to (at least try to) build was to add a specific exception in the CMake files:
$ git diff CMakeLists.txt src/cmake/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b2f6089..abfe364 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,14 +16,6 @@ if (NANOBENCH_STANDALONE_PROJECT)
   set(CMAKE_CXX_STANDARD_REQUIRED ON)
   set(CMAKE_CXX_EXTENSIONS OFF)

-    # configuration see .clang-tidy
-    if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-        find_program(CLANG_TIDY_PROGRAM NAMES clang-tidy)
-        if(CLANG_TIDY_PROGRAM)
-            set(CMAKE_CXX_CLANG_TIDY "${CLANG_TIDY_PROGRAM}")
-        endif()
-    endif()
-
   find_program(CCACHE_PROGRAM ccache)
   if(CCACHE_PROGRAM)
       SET(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
@@ -33,6 +25,10 @@ if (NANOBENCH_STANDALONE_PROJECT)

   if (NB_sanitizer)
       if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+            find_program(CLANG_TIDY_PROGRAM NAMES clang-tidy)
+            if(CLANG_TIDY_PROGRAM)
+                set(CMAKE_CXX_CLANG_TIDY "${CLANG_TIDY_PROGRAM}")
+            endif()
           # see https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html#silencing-unsigned-integer-overflow
           # Compile with -g and -fno-omit-frame-pointer to get proper debug information in your binary
           target_compile_options(nb PRIVATE -g)
diff --git a/src/cmake/CMakeLists.txt b/src/cmake/CMakeLists.txt
index 707d33e..2ef33f4 100644
--- a/src/cmake/CMakeLists.txt
+++ b/src/cmake/CMakeLists.txt
@@ -32,7 +32,7 @@ endfunction()
MESSAGE(STATUS "${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}, C++${CMAKE_CXX_STANDARD}, CMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}")

function(add_compile_flags_target target)
-    if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
+    if((CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang") AND (NOT CMAKE_SYSTEM_NAME MATCHES "Darwin"))
       if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
           target_compile_options(${target} PRIVATE -fdiagnostics-color)
           target_compile_options(${target} PRIVATE -Wno-zero-as-null-pointer-constant) # doesn't work with spaceship operator

The full cmake invocation is:

cmake -S . -B build -DNB_sanitizer=0 -DNB_STANDALONE_PROJECT=0 -DBUILD_SHARED_LIBS=1

Output:

CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.10 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.


-- The CXX compiler identification is Clang 19.1.7
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /nix/store/2xp6f0h7ssrns8a6kz0swnynw7j2vvq7-clang-wrapper-19.1.7/bin/clang++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Clang 19.1.7, C++11, CMAKE_CXX_FLAGS=
-- Configuring done (0.4s)
-- Generating done (0.0s)
CMake Warning:
  Manually-specified variables were not used by the project:

    NB_STANDALONE_PROJECT


-- Build files have been written to: /Users/bogdb/src/nanobench/build
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.10 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.


-- The CXX compiler identification is Clang 19.1.7
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /nix/store/2xp6f0h7ssrns8a6kz0swnynw7j2vvq7-clang-wrapper-19.1.7/bin/clang++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Clang 19.1.7, C++11, CMAKE_CXX_FLAGS=
-- Configuring done (0.4s)
-- Generating done (0.0s)
CMake Warning:
  Manually-specified variables were not used by the project:

    NB_STANDALONE_PROJECT


-- Build files have been written to: /Users/bogdb/src/nanobench/build
  1. After hacking at the CMake file I can start a build until I get an error:
[  2%] Building CXX object CMakeFiles/nb.dir/src/test/app/nanobench.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/app/nanobench.cpp:2:
/Users/bogdb/src/nanobench/src/include/nanobench.h:1722:13: warning: 'switch' missing 'default' label [-Wswitch-default]
 1722 |             switch (n.type) {
      |             ^
/Users/bogdb/src/nanobench/src/include/nanobench.h:1752:13: warning: 'switch' missing 'default' label [-Wswitch-default]
 1752 |             switch (n.type) {
      |             ^
/Users/bogdb/src/nanobench/src/include/nanobench.h:1911:9: warning: 'switch' missing 'default' label [-Wswitch-default]
 1911 |         switch (n.type) {
      |         ^
/Users/bogdb/src/nanobench/src/include/nanobench.h:2210:9: warning: 'switch' missing 'default' label [-Wswitch-default]
 2210 |         switch (mState) {
      |         ^
/Users/bogdb/src/nanobench/src/include/nanobench.h:1504:13: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 1504 |             begin += 2;
      |             ^~~~~
/Users/bogdb/src/nanobench/src/include/nanobench.h:1511:43: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 1511 |             nodes.emplace_back(Node{*tpl, *tpl + std::strlen(*tpl), std::vector<Node>{}, Node::Type::content});
      |                                           ^~~~
/Users/bogdb/src/nanobench/src/include/nanobench.h:1516:39: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 1516 |         nodes.emplace_back(Node{*tpl, begin - 2, std::vector<Node>{}, Node::Type::content});
      |                                       ^~~~~
/Users/bogdb/src/nanobench/src/include/nanobench.h:1520:16: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 1520 |         *tpl = end + 2;
      |                ^~~
/Users/bogdb/src/nanobench/src/include/nanobench.h:1528:37: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 1528 |             nodes.emplace_back(Node{begin + 1, end, parseMustacheTemplate(tpl), Node::Type::section});
      |                                     ^~~~~
/Users/bogdb/src/nanobench/src/include/nanobench.h:1533:37: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 1533 |             nodes.emplace_back(Node{begin + 1, end, parseMustacheTemplate(tpl), Node::Type::inverted_section});
      |                                     ^~~~~
10 warnings generated.
[  5%] Building CXX object CMakeFiles/nb.dir/src/test/app/doctest.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/app/doctest.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3308:16: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3308 |         for(;; a++, b++) {
      |                ^
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3308:21: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3308 |         for(;; a++, b++) {
      |                     ^
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3505:20: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 3505 |             return m_atomics[tlsLaneIdx].atomic;
      |                    ^~~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3600:9: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 3600 |         buf[sz] = '\0';
      |         ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3608:9: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 3608 |         data.ptr[sz] = '\0';
      |         ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3613:72: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 3613 | void String::setOnHeap() noexcept { *reinterpret_cast<unsigned char*>(&buf[last]) = 128; }
      |                                                                        ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3614:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 3614 | void String::setLast(size_type in) noexcept { buf[last] = char(in); }
      |                                               ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3616:24: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 3616 |     if (isOnStack()) { buf[sz] = '\0'; setLast(last - sz); }
      |                        ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3617:12: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 3617 |     else { data.ptr[sz] = '\0'; data.size = sz; }
      |            ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3669:20: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3669 |             memcpy(buf + my_old_size, other.c_str(), other_size + 1);
      |                    ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3683:20: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3683 |             memcpy(data.ptr + my_old_size, other.c_str(), other_size + 1);
      |                    ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3689:20: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3689 |             memcpy(data.ptr + my_old_size, other.c_str(), other_size + 1);
      |                    ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3705:20: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3705 |             memcpy(data.ptr + my_old_size, other.c_str(), other_size + 1);
      |                    ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3735:16: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 3735 |         return reinterpret_cast<char*>(buf)[i];
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3736:12: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 3736 |     return data.ptr[i];
      |            ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3742:34: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 3742 |         return last - (size_type(buf[last]) & 31); // using "last" would work only if "len" is 32
      |                                  ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3756:19: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3756 |     memmove(cptr, cptr + pos, cnt);
      |                   ^~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3763:20: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3763 |     return String{ c_str() + pos, cnt };
      |                    ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3768:23: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3768 |     const char* end = begin + size();
      |                       ^~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3769:22: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3769 |     const char* it = begin + pos;
      |                      ^~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3770:35: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3770 |     for (; it < end && *it != ch; it++);
      |                                   ^~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3777:22: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3777 |     const char* it = begin + std::min(pos, size() - 1);
      |                      ^~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3778:38: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3778 |     for (; it >= begin && *it != ch; it--);
      |                                      ^~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:3892:20: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 3892 |             return forward + 1;
      |                    ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4122:13: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 4122 |             wild++;
      |             ^~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4123:13: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 4123 |             str++;
      |             ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4128:24: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 4128 |                 if(!*++wild) {
      |                        ^~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4132:22: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 4132 |                 cp = str + 1;
      |                      ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4135:17: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 4135 |                 wild++;
      |                 ^~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4136:17: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 4136 |                 str++;
      |                 ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4139:24: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 4139 |                 str  = cp++; //!OCLINT parameter reassignment
      |                        ^~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4144:13: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 4144 |             wild++;
      |             ^~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4170:22: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 4170 |         while ((c = *str++))
      |                      ^~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4803:35: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 4803 |                 SignalDefs& def = signalDefs[i];
      |                                   ^~~~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4833:27: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 4833 |                 sigaction(signalDefs[i].id, &sa, &oldSigActions[i]);
      |                           ^~~~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4833:51: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 4833 |                 sigaction(signalDefs[i].id, &sa, &oldSigActions[i]);
      |                                                   ^~~~~~~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4842:31: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 4842 |                     sigaction(signalDefs[i].id, &oldSigActions[i], nullptr);
      |                               ^~~~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:4842:50: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 4842 |                     sigaction(signalDefs[i].id, &oldSigActions[i], nullptr);
      |                                                  ^~~~~~~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:5434:21: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 5434 |                     contexts[i]->stringify(&ss);
      |                     ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:5492:74: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 5492 |                     xml.scopedElement("TestCase").writeAttribute("name", in.data[i]->m_name)
      |                                                                          ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:5493:54: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 5493 |                         .writeAttribute("testsuite", in.data[i]->m_test_suite)
      |                                                      ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:5494:74: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 5494 |                         .writeAttribute("filename", skipPathFromFilename(in.data[i]->m_file.c_str()))
      |                                                                          ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:5495:54: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 5495 |                         .writeAttribute("line", line(in.data[i]->m_line))
      |                                                      ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:5496:52: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 5496 |                         .writeAttribute("skipped", in.data[i]->m_skip);
      |                                                    ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:5502:75: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 5502 |                     xml.scopedElement("TestSuite").writeAttribute("name", in.data[i]->m_test_suite);
      |                                                                           ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:5936:21: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 5936 |                     contexts[i]->stringify(&s);
      |                     ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6014:21: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6014 |                     contexts[i]->stringify(&s);
      |                     ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6226:41: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6226 |                     s << Color::None << in.data[i]->m_name << "\n";
      |                                         ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6239:41: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6239 |                     s << Color::None << in.data[i]->m_test_suite << "\n";
      |                                         ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6359:26: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6359 |                       << stringified_contexts[i - 1] << "\n";
      |                          ^~~~~~~~~~~~~~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6454:37: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6454 |             auto temp = std::strstr(argv[index], pattern);
      |                                     ^~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6458:40: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6458 |                 auto curr            = argv[index];
      |                                        ^~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6460:25: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 6460 |                     if(*curr++ != '-') {
      |                         ^~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6465:39: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6465 |                 if(noBadCharsFound && argv[index][0] == '-') {
      |                                       ^~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6468:25: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 6468 |                         temp += strlen(pattern);
      |                         ^~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6491:40: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 6491 |         if(parseOptionImpl(argc, argv, pattern + strlen(DOCTEST_CONFIG_OPTIONS_PREFIX), value))
      |                                        ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6519:31: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 6519 |             const char* end = current + strlen(current);
      |                               ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6521:35: warning: unsafe pointer arithmetic [-Wunsafe-buffer-usage]
 6521 |                 char character = *current++;
      |                                   ^~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6576:41: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6576 |                 if (parsedValue.compare(positive[i], true) == 0) {
      |                                         ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6580:41: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6580 |                 if (parsedValue.compare(negative[i], true) == 0) {
      |                                         ^~~~~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6895:35: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6895 |                 const auto temp = first[i];
      |                                   ^~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6897:17: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6897 |                 first[i]         = first[idxToSwap];
      |                 ^~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6897:36: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6897 |                 first[i]         = first[idxToSwap];
      |                                    ^~~~~
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:6898:17: warning: unsafe buffer access [-Wunsafe-buffer-usage]
 6898 |                 first[idxToSwap] = temp;
      |                 ^~~~~
65 warnings generated.
[  8%] Building CXX object CMakeFiles/nb.dir/src/test/example_always_the_same.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_always_the_same.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 11%] Building CXX object CMakeFiles/nb.dir/src/test/example_atomic.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_atomic.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 13%] Building CXX object CMakeFiles/nb.dir/src/test/example_branch_misses.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_branch_misses.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 16%] Building CXX object CMakeFiles/nb.dir/src/test/example_complexity.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_complexity.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 19%] Building CXX object CMakeFiles/nb.dir/src/test/example_containers.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_containers.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 22%] Building CXX object CMakeFiles/nb.dir/src/test/example_csv.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_csv.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 25%] Building CXX object CMakeFiles/nb.dir/src/test/example_hide_output.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_hide_output.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 27%] Building CXX object CMakeFiles/nb.dir/src/test/example_preconfigured_name.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_preconfigured_name.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 30%] Building CXX object CMakeFiles/nb.dir/src/test/example_pyperf.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_pyperf.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 33%] Building CXX object CMakeFiles/nb.dir/src/test/example_random_number_generators.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_random_number_generators.cpp:6:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 36%] Building CXX object CMakeFiles/nb.dir/src/test/example_random_uniform01.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_random_uniform01.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 38%] Building CXX object CMakeFiles/nb.dir/src/test/example_random2.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_random2.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 41%] Building CXX object CMakeFiles/nb.dir/src/test/example_shuffle.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/example_shuffle.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 44%] Building CXX object CMakeFiles/nb.dir/src/test/tutorial_complexity_set.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/tutorial_complexity_set.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 47%] Building CXX object CMakeFiles/nb.dir/src/test/tutorial_complexity_sort.cpp.o
In file included from /Users/bogdb/src/nanobench/src/test/tutorial_complexity_sort.cpp:2:
/Users/bogdb/src/nanobench/src/test/thirdparty/doctest/doctest.h:611:47: warning: unsafe buffer access [-Wunsafe-buffer-usage]
  611 |     bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
      |                                               ^~~
1 warning generated.
[ 50%] Building CXX object CMakeFiles/nb.dir/src/test/tutorial_context.cpp.o
/Users/bogdb/src/nanobench/src/test/tutorial_context.cpp:42:10: error: no matching member function for call to 'run'
   39 |     bench.context("scalar", "f32")
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   40 |         .context("foo", "bar")
      |         ~~~~~~~~~~~~~~~~~~~~~~
   41 |         .run("+=", plus_eq<float>)
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~
   42 |         .run("fma", fma<float>);
      |         ~^~~
/Users/bogdb/src/nanobench/src/include/nanobench.h:1234:15: note: candidate template ignored: couldn't infer template argument 'Op'
 1234 | Bench& Bench::run(char const* benchmarkName, Op&& op) {
      |               ^
/Users/bogdb/src/nanobench/src/include/nanobench.h:1240:15: note: candidate template ignored: couldn't infer template argument 'Op'
 1240 | Bench& Bench::run(std::string const& benchmarkName, Op&& op) {
      |               ^
/Users/bogdb/src/nanobench/src/include/nanobench.h:1212:15: note: candidate function template not viable: requires single argument 'op', but 2 arguments were provided
 1212 | Bench& Bench::run(Op&& op) {
      |               ^   ~~~~~~~
/Users/bogdb/src/nanobench/src/test/tutorial_context.cpp:46:10: error: no matching member function for call to 'run'
   43 |     bench.context("scalar", "f64")
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   44 |         .context("foo", "baz")
      |         ~~~~~~~~~~~~~~~~~~~~~~
   45 |         .run("+=", plus_eq<double>)
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~
   46 |         .run("fma", fma<double>);
      |         ~^~~
/Users/bogdb/src/nanobench/src/include/nanobench.h:1234:15: note: candidate template ignored: couldn't infer template argument 'Op'
 1234 | Bench& Bench::run(char const* benchmarkName, Op&& op) {
      |               ^
/Users/bogdb/src/nanobench/src/include/nanobench.h:1240:15: note: candidate template ignored: couldn't infer template argument 'Op'
 1240 | Bench& Bench::run(std::string const& benchmarkName, Op&& op) {
      |               ^
/Users/bogdb/src/nanobench/src/include/nanobench.h:1212:15: note: candidate function template not viable: requires single argument 'op', but 2 arguments were provided
 1212 | Bench& Bench::run(Op&& op) {
      |               ^   ~~~~~~~
2 errors generated.
make[2]: *** [CMakeFiles/nb.dir/build.make:317: CMakeFiles/nb.dir/src/test/tutorial_context.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:219: CMakeFiles/nb.dir/all] Error 2
make: *** [Makefile:136: all] Error 2

Note that on linux I don't have this problem.

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