Bug in nasm preproc

[Mathieu Monnier]

The nasm preprocessor is writing into an unvalid memory address when
preprocessing the attached asm file. That unvalid access is happening as
soon as a macro with a number of arguments multiple of 16 was used.

Also attached is the patch fixing the issue. After that patch, valgrind
doesn't complain anymore.

Regards,

Mathieu Monnier



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