[LLVMbugs] [Bug 15236] New: Replace Sema::DynamicClasses with something more targeted

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15236

            Bug ID: 15236
           Summary: Replace Sema::DynamicClasses with something more
                    targeted
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: richard-llvm at metafoo.co.uk
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

At the end of a TU, we iterate over Sema::DynamicClasses to find the classes
whose key function was defined in that TU. In the case of PCH/modules, this
deserializes the definitions of all dynamic classes in all modules included
into the TU. We could instead just keep a list of those classes whose key
functions have been defined -- we know whether a function is a key function at
its point of definition, since a function cannot become inline after its
definition.

Also, we should issue a warning if a key function is defined outside of the
main source file, or in a PCH or a module.

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