[Issue 10432] New: RDMD: --dry-run option tries to read non-existent file

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10432

           Summary: RDMD: --dry-run option tries to read non-existent file
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: pull
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: andrej.mitrovich at gmail.com
        ReportedBy: andrej.mitrovich at gmail.com


--- Comment #0 from Andrej Mitrovic <andrej.mitrovich at gmail.com> 2013-06-20 15:39:50 PDT ---
$ rdmd --dry-run

read
C:\Users\ADMINI~1\AppData\Local\Temp\.rdmd\rdmd-rdmd_dry_run.d-CAF07156CF44F49E21D3ED1
AC377E211\rdmd.deps
std.exception.ErrnoException at std\stdio.d(325): Cannot open file
`C:\Users\ADMINI~1\AppData\
Local\Temp\.rdmd\rdmd-rdmd_dry_run.d-CAF07156CF44F49E21D3ED1AC377E211\rdmd.deps'
in mode `r
b' (No such file or directory)

The reason why is this code:

-----
immutable depsExitCode = run(depsGetter, depsFilename);
if (depsExitCode)
{
    stderr.writeln("Failed: ", escapeShellCommand(depsGetter));
    collectException(std.file.remove(depsFilename));
    exit(depsExitCode);
}

return readDepsFile();
-----

If --dry-run is set, the run() function will not call anything, and then
readDepsFile will attempt to read a file that it expects was created by the
run() call.

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