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digitalmars.D.bugs - [Issue 11794] New: Compilation fails with a certain selective import

reply d-bugmail puremagic.com writes:
https://d.puremagic.com/issues/show_bug.cgi?id=11794

           Summary: Compilation fails with a certain selective import
           Product: D
           Version: D2
          Platform: x86_64
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: nick wabbo.org



I'm not sure whether this is a problem with my code or a bug. The following
code compiles and executes as expected:

import std.stdio;
import std.conv : to;
void main() {
    auto x = std.conv.to!double("7.3");
    writeln(x - 2.2);
}


However, changing the first line to this:

import std.stdio : writeln;

results in the following error:


: dmd main.d
main.d(5): Error: undefined identifier std



This is with DMD 2.064.

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next sibling parent d-bugmail puremagic.com writes:
https://d.puremagic.com/issues/show_bug.cgi?id=11794




I apologize, the code I pasted is somewhat confusing. There should be a blank
line after the imports and before the main() declaration, so that the error
message is referring to the "auto x = std.conv.to!double("7.3");" line.



import std.stdio;
import std.conv : to;

void main() {
    auto x = std.conv.to!double("7.3");
    writeln(x - 2.2);
}

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Dec 21 2013
prev sibling parent d-bugmail puremagic.com writes:
https://d.puremagic.com/issues/show_bug.cgi?id=11794


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

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



01:18:03 PST ---


 I'm not sure whether this is a problem with my code or a bug.


I think it's a duplicate report, I've seen this before. When you use selective
imports you cannot use the fully qualified name of the symbol, e.g.:

-----
import std.stdio : writeln;

void main()
{
    std.stdio.writeln("foo");  // error
}
-----

This is by design.

However, for some reason "std.conv" is available when you import std.stdio, but
I think this is a dupe report. Here's the accepts-invalid test case:

-----
import std.stdio;

void main()
{
    std.conv.to!int("1");  // this should be an error..
}
-----

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