In file included from include/flatbuffers/flexbuffers.h:24,
from src/idl_gen_text.cpp:20:
include/flatbuffers/util.h: In function 'int flatbuffers::FromUTF8(const char**)':
include/flatbuffers/util.h:324:45: error: type qualifiers ignored on cast result type [-Werror=ignored-qualifiers]
if ((static_cast<const unsigned char>(**in) << len) & 0x80) return -1; // Bit after leading 1's must be 0.
^
cc1plus: all warnings being treated as errors
make[2]: *** [CMakeFiles/flatbuffers_shared.dir/build.make:92: CMakeFiles/flatbuffers_shared.dir/src/idl_gen_text.cpp.o] Error 1
Const does not make sense here, and compiler actually throws warning
(error with -Werror) when you would try to compile it.
In file included from include/flatbuffers/flexbuffers.h:24,
from include/flatbuffers/idl.h:26,
from include/flatbuffers/code_generators.h:22,
from src/code_generators.cpp:17:
include/flatbuffers/util.h: In function ‘int flatbuffers::FromUTF8(const char**)’:
include/flatbuffers/util.h:325:44: error: type qualifiers ignored on cast result type [-Werror=ignored-qualifiers]
if ((static_cast<const unsigned char>(tmp) << len) & 0x80) return -1; // Bit after leading 1's must be 0.
^
cc1plus: all warnings being treated as errors
This warning caught by gcc8:
$ g++ --version
g++ (GCC) 8.0.1 20180222 (Red Hat 8.0.1-0.16)
src/idl_parser.cpp: In member function 'flatbuffers::CheckedError flatbuffers::Parser::ParseHexNum(int, uint64_t*)':
src/idl_parser.cpp:220:62: error: type qualifiers ignored on cast result type [-Werror=ignored-qualifiers]
if (!isxdigit(static_cast<const unsigned char>(cursor_[i])))
^
src/idl_parser.cpp: In member function 'flatbuffers::CheckedError flatbuffers::Parser::Next()':
src/idl_parser.cpp:260:62: error: type qualifiers ignored on cast result type [-Werror=ignored-qualifiers]
if(!isdigit(static_cast<const unsigned char>(*cursor_))) return NoError();
^
cc1plus: all warnings being treated as errors
Sergey Avseyev