Compiler struggles with macro abuse

Project: ParadiseSS13/Paradise @ fdc7d2ce71e527cc0b21a530376aa399975fdefb

Stacktrace:

$ ./DMCompiler.exe "C:\Users\AffectedArc07\Documents\Paradise\paradise.dme"
Compiling paradise.dme
Unhandled exception. System.Exception: Invalid token DM_Preproc_TokenConcat(code\modules\maze_generation\maze_generator.dm:67:19, ##x)
   at OpenDreamShared.Compiler.DMPreprocessor.DMPreprocessor.IncludeFile(String includePath, String file) in C:\Users\AffectedArc07\Documents\GitHub\Misc_Shit\OpenDream\OpenDreamShared\Compiler\DMPreprocessor\DMPreprocessor.cs:line 253
   at OpenDreamShared.Compiler.DMPreprocessor.DMPreprocessor.IncludeFile(String includePath, String file) in C:\Users\AffectedArc07\Documents\GitHub\Misc_Shit\OpenDream\OpenDreamShared\Compiler\DMPreprocessor\DMPreprocessor.cs:line 65
   at DMCompiler.Program.Preprocess(List`1 files) in C:\Users\AffectedArc07\Documents\GitHub\Misc_Shit\OpenDream\DMCompiler\Program.cs:line 106
   at DMCompiler.Program.Main(String[] args) in C:\Users\AffectedArc07\Documents\GitHub\Misc_Shit\OpenDream\DMCompiler\Program.cs:line 28

Offending code:

#define LOG_MAZE_PROGRESS(proc2run, opname) \
do { \
    var/timer = start_watch(); \
    proc2run ;\
    log_debug("\[MAZE] Operation '[opname]' on maze at [##x],[##y],[##z] took [stop_watch(timer)]s"); \
} while (FALSE)

Note: This is a total abuse of macros but works in DM so here we are. Ike told me to.

[wixoaGit]

Some testing with BYOND’s compiler shows that any instance of ##nonexistant_parameter is just replaced with nonexistant_parameter. But only if it’s a macro that takes parameters.

[AffectedArc07]

how is this abuse, this is literally a normal documented part of the preprocessor

A parameter preceded by ## in the macro body is substituted directly, without any spaces

This isnt a parameter.