https://issues.dlang.org/show_bug.cgi?id=18742
Issue ID: 18742
Summary: std.regex: Using CodePointSet in AAs breaks if
reference count changes
Product: D
Version: D2
Hardware: All
OS: All
Status: NEW
Keywords: bootcamp
Severity: minor
Priority: P1
Component: phobos
Assignee: [email protected]
Reporter: [email protected]
When storing a CodePointSet in an AA, the reference count member is included
when hashing, so two identical CodePointSets only differing in the reference
count are not considered as the same AA key. std.regex does actually put
CodePointSets into AAs, so this seems very fragile. As a solution, CodePointSet
should properly implement the toHash function.
Test case:
--------------------------------------
import std.uni, std.stdio;
void main()
{
int[CodepointSet] aa;
auto set = unicode.Nd;
aa[set] = 42;
writeln(aa[set]);
}
--------------------------------------
This is expected to print 42, but currently throws a RangeError instead.
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