Annoying compile warnings

[ibell]

When I compile a library calling cppformat, I get lots of warnings like these when I compile on OSX with Xcode:

../../externals/cppformat/fmt/format.h:1165:3: warning: unused typedef
      'Assert1168' [-Wunused-local-typedef]
  FMT_STATIC_ASSERT(False<T>::value,
  ^
../../externals/cppformat/fmt/format.h:1160:15: note: expanded from macro
      'FMT_STATIC_ASSERT'
  typedef int FMT_CONCAT_(Assert, __LINE__)[(cond) ? 1 : -1] FMT_UNUSED
              ^
../../externals/cppformat/fmt/format.h:1158:28: note: expanded from macro
      'FMT_CONCAT_'
# define FMT_CONCAT_(a, b) FMT_CONCAT(a, b)
                           ^
../../externals/cppformat/fmt/format.h:1142:26: note: expanded from macro
      'FMT_CONCAT'
#define FMT_CONCAT(a, b) a##b
                         ^
<scratch space>:116:1: note: expanded from here
Assert1168

It would be awesome if you would kill these warnings somehow.

[foonathan]

The FMT_UNUSED at the should silence the warning.

Could you go to line 1180 of format.h and insert an #error "foo" in the else of that #ifdef?
And if that error triggers, could you provide the value of FMT_GCC_VERSION?
I can't compile it on XCode.

[vitaut]

I was able to reproduce it. The problem was in the too conservative GCC version check. The unused attribute is available at least in gcc 3.2.1: https://gcc.gnu.org/onlinedocs/gcc-3.2.1/gcc/Type-Attributes.html#Type%20Attributes. Fixed in 2fa4655. Thanks for reporting!

[ibell]

Great, thanks for fixing this issue. Back to zero warnings in my library

On Sun, Nov 6, 2016 at 12:52 PM, Victor Zverovich [email protected]
wrote:

Closed #414 #414.

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