http://llvm.org/bugs/show_bug.cgi?id=4673
Summary: Empty classes have positive DataSize
Product: clang
Version: unspecified
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: AST
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
While implementing the __is_empty type trait, I chose to use the DataSize
member of ASTRecordLayout. As it turns out, a completely empty class ("struct
foo {};") has a DataSize equal to its Size. If the class contains a
constructor, destructor, or copy assignment operator, DataSize is 0 as
expected. Other member functions do not seem to affect this. Those three
functions are the definition of a trivial class - is that the issue?
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