[Issue 21864] Line numbers and file names wrong in stack trace for Dward debug info

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21864

--- Comment #1 from Walter Bright <bugzilla at digitalmars.com> ---
If it is compiled like so:

    dmd -g -c test20460b
    dmd -g test20460a test20460b.o

it produces the correct output when run.

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