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digitalmars.D.bugs - [Issue 5215] New: Crash with empty program

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=5215

           Summary: Crash with empty program
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Optlink
        AssignedTo: nobody puremagic.com
        ReportedBy: bearophile_hugs eml.cc



This simple wrong D2 program generates expected linker errors and then an
unexpected crash on Windows:


void main();

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next sibling parent d-bugmail puremagic.com writes:
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Don <clugdbug yahoo.com.au> changed:

           What    |Removed                     |Added
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                 CC|                            |clugdbug yahoo.com.au





 This simple wrong D2 program generates expected linker errors and then an
 unexpected crash on Windows:



 void main();


What do you mean, 'unexpected'? It complains that there's no main(). Passing an
empty file does exactly the same thing.
(The annoying thing is that it makes an exe anyway, even though the exe is
corrupt).

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prev sibling next sibling parent d-bugmail puremagic.com writes:
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 What do you mean, 'unexpected'? It complains that there's no main(). Passing an
 empty file does exactly the same thing.
 (The annoying thing is that it makes an exe anyway, even though the exe is
 corrupt).


You are right, sorry. The crash is not caused by the compiler/linker, but by
the corrupt exe.

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prev sibling next sibling parent d-bugmail puremagic.com writes:
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Walter Bright <bugzilla digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla digitalmars.com
         Resolution|                            |WONTFIX



02:12:34 PST ---
The linker is supposed to create an exe file, even if there are errors. This is
handy for some special purposes.

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prev sibling next sibling parent d-bugmail puremagic.com writes:
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Brad Roberts <braddr puremagic.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
                 CC|                            |braddr puremagic.com
         Resolution|WONTFIX                     |



---
What circumstances?  I don't have a lot of experience with windows, but
binutils ld doesn't leave broken turds when linking fails like that.  I can see
having a linker option to force it to leave the output alone on error, but not
having that as the default behavior.  Would you treat dmd leaving a .obj file
around if there are syntax errors in the .d being built?

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Andrej Mitrovic <andrej.mitrovich gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |andrej.mitrovich gmail.com



10:31:54 PST ---
Optlink has a /DELEXECUTABLE flag for deleting the exe if there are linker
errors, but it doesn't work (I assume because optlink creates warnings instead
of errors for OPs code).

Additionally optlink creates executables even if you don't pass anything to it,
e.g.:

$ link.exe
creates .exe

The linker gives you warnings and creates a `.exe` file. Pretty stupid behavior
if you ask me. Every modern console app would display a list of arguments you
can pass to it, or a sane warning instead of "OPTLINK : Warning 134: No Start
Address" when you didn't pass a single file to it.

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12:47:06 PST ---
The special purposes are when parts of your program are missing, but you want
to link and run the rest of it.

I'm not sure why /delexecutable is not working, though.

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