String literals in assembly file

[kavon]

➤ ../bin/pmlc -sequential -mlrisc literal.pml 
literal.s:2131:9: error: invalid escape sequence (unrecognized character) in '.asciz' directive
        .asciz  "mlrisc\'s string literal bug"
                ^
error compiling generated assembly code

from the following program

val _ = print "mlrisc's string literal bug"

On Ubuntu 18.04, likely using clang to compile.

[JohnReppy]

The source of this bug is probably the use of the String.toCString function from the SML Basis Library (I haven't actually checked the source). Note that \' is a valid C escape sequence, the toCString function is behaving correctly. The bug fix is to write a string literal processor that is customized to .asciz using the String.translate function.