Hui added inline comments.
================
Comment at: source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp:588
+ if (result->GetID() == type_uid) {
+ pdb->CompleteRecordTypeForPDBSymbol(*pdb_type, result);
+ }
----------------
aleksandr.urakov wrote:
> What are the advantages and disadvantages of immediate (here) and deferred
> (at the `CompleteType` function) completions? I thought that deferred
> completion is a kind of lazy optimization, so we lost its advantages?
I think the initial purpose was that the 'incomplete' can be detected
immediately after 'first' parsing and then solved immediately.
The deferred type completion can encounter a drawback (maybe be worked around
by using lock)
a. the deferred procedure could happen during the 'm_types' (TypeList)" dumping
b. the deferred output could add new types to the 'm_types'.
c. see below. The dump implementation of TypeList.
It will result in undefined behavior if a list is expanded while accessing it
with iterator.
void TypeList::Dump(Stream *s, bool show_context) {
for (iterator pos = m_types.begin(), end = m_types.end(); pos != end; ++pos) {
pos->get()->Dump(s, show_context);
}
}
In this sense, https://reviews.llvm.org/D49368 has a better solution.
https://reviews.llvm.org/D49410
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