added missing include of exception

[m42e]

No description provided.

[yhirose]

@m42e thanks for the feedback. I have never had a compile error without on my development environments and on GitHub Actions CI. Could you explain more about it?

[m42e]

@yhirose without that include I get the following error:

[ 20%] Building CXX object util/CMakeFiles/util.dir/aaa.cpp.o
In file included from /Users/---/util/aaa.cpp:1:
In file included from /Users/---/util/aaa.h:1:
/Users/---/util/httplib.h:6654:17: error: calling 'current_exception' with incomplete return type 'exception_ptr'
 6654 |       auto ep = std::current_exception();
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/llvm/17.0.6/bin/../include/c++/v1/__exception/operations.h:38:41: note: 'current_exception' declared here
   38 | _LIBCPP_EXPORTED_FROM_ABI exception_ptr current_exception() _NOEXCEPT;
      |                                         ^
/usr/local/Cellar/llvm/17.0.6/bin/../include/c++/v1/__exception/operations.h:36:33: note: forward declaration of 'std::exception_ptr'
   36 | class _LIBCPP_EXPORTED_FROM_ABI exception_ptr;
      |                                 ^
In file included from /Users/---/util/aaa.cpp:1:
In file included from /Users/---/util/aaa.h:1:
/Users/---/util/httplib.h:6672:17: error: calling 'current_exception' with incomplete return type 'exception_ptr'
 6672 |       auto ep = std::current_exception();
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/llvm/17.0.6/bin/../include/c++/v1/__exception/operations.h:38:41: note: 'current_exception' declared here
   38 | _LIBCPP_EXPORTED_FROM_ABI exception_ptr current_exception() _NOEXCEPT;
      |                                         ^
/usr/local/Cellar/llvm/17.0.6/bin/../include/c++/v1/__exception/operations.h:36:33: note: forward declaration of 'std::exception_ptr'
   36 | class _LIBCPP_EXPORTED_FROM_ABI exception_ptr;
      |                                 ^
2 errors generated.
make[2]: *** [util/CMakeFiles/util.dir/aaa.cpp.o] Error 1
make[1]: *** [util/CMakeFiles/util.dir/all] Error 2
make: *** [all] Error 2

Compiling with llvm 17.0.6 on Mac OS (installed with brew)

[yhirose]

OK. Thanks for your contribution!