[Issue 11888] New: Incorrect behaviour taking slice from return value

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=11888

           Summary: Incorrect behaviour taking slice from return value
           Product: D
           Version: D2
          Platform: x86_64
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: turkeyman at gmail.com


--- Comment #0 from Manu <turkeyman at gmail.com> 2014-01-09 22:46:54 PST ---
So given a C-style function like this, that returns a pointer and length via
pointer argument:
   ubyte* test(size_t* len)
   {
     *len = 100;
     return cast(ubyte*)1234;
   }

Call it, but immediately use the size argument to slice a range:
   size_t size;
   ubyte[] t = test(&size)[0..size];

t is null.

If I break it into separate statements, it works:
   size_t size;
   ubyte* pt = test(&size);
   ubyte[] t = pt[0..size];

t.ptr = 1234, t.length = 100;

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