Project won't compile with GCC

[guard3]

Project doesn't compile with GCC, either weird errors or the compiler is crashing. Only Clang and MSVC are supported

[guard3]

More that a year later, the situation is improving but the issues still persist. As of now, with GCC 14, there seems to be a bug where the type of co_await expressions can't be resolved in templated coroutines. There are workarounds, but unless that is fixed, GCC will continue to be considered unsupported.

[guard3]

As of now, GCC 15.2 fails to compile the following snippet:

GreekBot/Database/Database.cpp

Lines 187 to 197 in 67a2eca

	void refTransaction::Close() {
	if (m_conn) {
	net::dispatch(dbCtx, [conn = std::exchange(m_conn, {})] mutable {
	std::error_code ec;
	if (refTransaction(conn).rollback_impl(ec); ec)
	conn.close();
	else
	dbConn = sqlite::connection(conn);
	});
	}
	}

/GreekBot/Database/Database.cpp: In lambda function:
/GreekBot/Database/Database.cpp:195:49: error: expected ';' before '.' token
  195 |                         if (refTransaction(conn).rollback_impl(ec); ec)
      |                                                 ^
      |                                                 ;
/GreekBot/Database/Database.cpp:195:49: error: expected primary-expression before '.' token
/GreekBot/Database/Database.cpp:195:67: error: expected ')' before ';' token
  195 |                         if (refTransaction(conn).rollback_impl(ec); ec)
      |                            ~                                      ^
      |                                                                   )
/GreekBot/Database/Database.cpp:195:71: error: expected ';' before ')' token
  195 |                         if (refTransaction(conn).rollback_impl(ec); ec)
      |                                                                       ^
      |                                                                       ;
/GreekBot/Database/Database.cpp:197:25: error: 'else' without a previous 'if'
  197 |                         else
      |                         ^~~~
make[2]: *** [CMakeFiles/GreekBot.dir/build.make:149: CMakeFiles/GreekBot.dir/Database/Database.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:87: CMakeFiles/GreekBot.dir/all] Error 2
make: *** [Makefile:91: all] Error 2

This is an odd one.