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digitalmars.D.bugs - [Issue 10522] New: __FILE__ and other special keywords cannot be used with printf

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=10522

           Summary: __FILE__ and other special keywords cannot be used
                    with printf
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: andrej.mitrovich gmail.com



15:00:08 PDT ---
-----
import std.stdio;

void main()
{
    printf("-- %s\n", __FILE__);
    printf("-- %s\n", __FUNCTION__);
    printf("-- %s\n", __PRETTY_FUNCTION__);
}
-----


 object.Error: Access Violation


The use-case are printf statements in destructors, which unlike writef will
avoid any allocations (which typically fail in dtors due to the GC being
stopped).

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Jul 01 2013
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=10522


yebblies <yebblies gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |yebblies gmail.com
         Resolution|                            |INVALID



Neither can string literals!  printf is a c-varargs function, and has no way of
knowing you want the implicit conversion to const(char)*.

Solutions:
printf("-- %s\n", cast(const(char*))__FILE__);
printf("-- %.*s\n", __FILE__.length, __FILE__.ptr);

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Aug 19 2013
prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=10522




08:35:40 PDT ---


 Neither can string literals!  printf is a c-varargs function, and has no way of
 knowing you want the implicit conversion to const(char)*.


I guess that shows how spoiled I am by D's variadic templates. :)


 printf("-- %s\n", cast(const(char*))__FILE__);


Also __FILE__.ptr and __FILE__.toStringz.

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