Ternary operator type unification problems with dstrings

[dlangBugzillaToGithub]

bearophile_hugs reported this on 2013-12-12T10:09:07Z

Transferred from https://issues.dlang.org/show_bug.cgi?id=11732

CC List

• yebblies

Description

Title: 
Component: dmd
Severity: 
Code number: 
Keywords: 
Outcome: 
Is done: no
See also: 


I am not sure this is a but, it seems like one:


void main() {
    bool test;
     string   s1 = test ? ""    : null; // OK
    dstring   s2 = test ? ""d   : null; // OK
    dstring   s3 = test ? ""    : "";   // OK
    dstring   s4 = test ? ""    : null; // error
    dstring[]  a = test ? [""d] : null; // OK
    dstring[]  b = test ? [""]  : null; // error
}

dmd 2.065alpha gives:

temp.d(6): Error: cannot implicitly convert expression (test ? "" : null) of type string to immutable(dchar)[]
temp.d(8): Error: cannot implicitly convert expression (test ? [""] : null) of type string[] to immutable(dchar)[][]

[dlangBugzillaToGithub]

yebblies commented on 2013-12-12T23:00:06Z

First one is similar to issue 9968.