D-Programming-Language/dmd — comment on commit 3a6b0381c2f41e4d0f2363a77caaa277c05758c1
File: src/expression.c line 5842
By donc:

This returns garbage if no error occurs! Compiler warning:

dmc -c -Iroot;\dm\include -D -g -DUNITTEST -cpp expression
Expression *BinAssignExp::commonSemanticAssign(Scope *sc)
^
expression.c(5851) : Warning 18: implied return of BinExp::incompatibleTypes at
closing '}' does not return value