http://d.puremagic.com/issues/show_bug.cgi?id=3147
Summary: Incorrect value range propagation for addition
Product: D
Version: unspecified
Platform: Other
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: nob...@puremagic.com
ReportedBy: and...@metalanguage.com
This code doesn't compile and it should:
void main()
{
byte x, y, z;
short a = x+y;
}
Although the manifest type of x+y is int, the actual range of x+y, regardless
of the values of x and y, is -byte.min-byte.min to byte.max+byte.max. That
range fits properly in a short so the compiler should let the code go through.
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