https://issues.dlang.org/show_bug.cgi?id=21510
Issue ID: 21510
Summary: __traits(isSame, a, AliasSeq!a) returns true if "a" is
a scalar
Product: D
Version: D2
Hardware: x86_64
OS: Linux
Status: NEW
Keywords: spec
Severity: normal
Priority: P1
Component: dmd
Assignee: [email protected]
Reporter: [email protected]
https://github.com/dlang/dmd/pull/11392 implies that the language designers
decided not to flatten template argument tuples (or whatever is he right name)
passed to __traits(isSame). The PR partially implements the decision but makes
no distinction between a singleton tuple and a scalar, which introduces an
undesirable inconsistency:
static assert(is(int == AliasSeq!int)); // false as expected
static assert(__traits(isSame, int, AliasSeq!int); // true, but false is
expected
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