The weirdest macro expansion

macro.m

#define TQAssertSoft(cond, domain, code, fmt, ...) \
do { \
  if(!(cond)) { \
    if(aoError) \
      *aoError = [NSError errorWithDomain:(domain) code:(code) userInfo:nil]; \
      TQLog(fmt, ##__VA_ARGS__); \
      return NO; \
  } \
} while(0)

TQAssertSoft(aArgument.identifier == nil,
             kTQSyntaxErrorDomain, kTQUnexpectedIdentifier,
             @"First argument of a block can not have an identifier");
/*
Results in:
TQSyntaxTree.m:91:3: warning: class method '+errorWithDomain:kTQUnexpectedIdentifier:userInfo:' not found (return type defaults to 'id')
                TQAssertSoft(aArgument.identifier == nil,
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./TQSyntaxTree.h:28:16: note: expanded from:
                                *aoError = [NSError errorWithDomain:(domain) code:(code) userInfo:nil]; \
*/