Warnings when building with clang on Mac OS X

[njh]

Hi,

I have just started using libcheck again for a new project. While the tests are working file, I am getting complier warnings with clang:

/usr/local/Cellar/check/0.10.0/include/check.h:454:75: error: token pasting of ',' and __VA_ARGS__ is a GNU extension
  [-Werror,-Wgnu-zero-variadic-macro-arguments]
 _ck_assert_failed(__FILE__, __LINE__, "Assertion '"#expr"' failed" , ## __VA_ARGS__, NULL)

The hacky way to work round this is using the -Wno-gnu-zero-variadic-macro-arguments compiler flag. But I think it would be better to not have to do this.

check: stable 0.10.0 (bottled)
Clang: Apple LLVM version 7.0.2 (clang-700.1.81)
Target: x86_64-apple-darwin14.5.0

Also slightly surprised nobody else seems to have reported this.

nick.

[brarcher]

I think that the following pull request attempts to resolve this:

#40

However, the proposed changes do not yet test successfully when using MSVC on Windows. If you happen to have access to Windows and want to take a stab at it, I would be grateful. (: Though, if you are reporting this from OSX, you may not have Windows with MSVC installed.

[njh]

Yeah, sorry I don't have access to Windows.

[iasonov]

Same issue on my Mac (M1). I have Parallels (so I can try test proposed changes with MSVC on Win 11).

check: 0.15.2
gcc:
Apple clang version 15.0.0 (clang-1500.3.9.4)
target: arm64-apple-darwin23.4.0