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Issue 7285 - Implicit fixed-size array cast
Summary: Implicit fixed-size array cast
Status: RESOLVED FIXED
Alias: None
Product: D
Classification: Unclassified
Component: dmd (show other issues)
Version: D2
Hardware: x86 Windows
: P2 normal
Assignee: No Owner
URL:
Keywords: patch, rejects-valid
Depends on:
Blocks:
 
Reported: 2012-01-12 18:27 UTC by bearophile_hugs
Modified: 2012-01-15 01:51 UTC (History)
1 user (show)

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Description bearophile_hugs 2012-01-12 18:27:03 UTC
This code compiles, because the [0,0] dynamic array literal casts implicitly to int[2]:


int[2] foo() {
    return [0, 0]; // OK
}
void main() {}


And of course this too compiles:


int[2] bar() {
    int[2] ab;
    return (true) ? ab : ab; // OK
}
void main() {}



But currently this code doesn't compile:


int[2] spam() {
    int[2] ab;
    return (true) ? ab : [0, 0]; // Error
}
void main() {}


DMD 2.058head:
test.d(3): Error: cannot implicitly convert expression (cast(int[])ab) of type int[] to int[2u]

I think this isn't good.