rsmith added inline comments.
================
Comment at: lib/Sema/SemaInit.cpp:1732
@@ +1731,3 @@
+ unsigned FieldIdx = 0;
+ std::vector<unsigned> SeenFields;
+ RecordDecl::field_iterator FieldStart = Field;
----------------
Please use an `llvm::BitVector` here instead.
================
Comment at: lib/Sema/SemaInit.cpp:1756-1769
@@ -1752,2 +1755,16 @@
+ if (CheckForMissingFields)
+ for (unsigned i = 0; i < FieldIdx; ++i)
+ SeenFields.push_back(i);
+ unsigned idx = 0;
+ for (RecordDecl::field_iterator f = FieldStart;
+ f != FieldEnd; ++idx, ++f) {
+ auto Next = f;
+ if (++Next == Field) {
+ FieldIdx = idx;
+ break;
+ }
+ }
+ SeenFields.push_back(FieldIdx);
+ ++FieldIdx;
InitializedSomething = true;
----------------
You can get the field index with `Field->getFieldIndex() - 1` rather than
computing it here (though watch out for the case where `Field == FieldEnd`).
================
Comment at: lib/Sema/SemaInit.cpp:1793-1795
@@ -1775,2 +1792,5 @@
// Don't initialize unnamed bitfields, e.g. "int : 20;"
+ if (!CheckForMissingFields)
+ SeenFields.push_back(FieldIdx);
+ ++FieldIdx;
++Field;
----------------
We don't need to track whether unnamed bit-fields have been "seen". This isn't
meaningful.
================
Comment at: lib/Sema/SemaInit.cpp:1808-1809
@@ -1787,1 +1807,4 @@
if (InvalidUse) {
+ if (!CheckForMissingFields)
+ SeenFields.push_back(FieldIdx);
+ ++FieldIdx;
----------------
Once we're in the `hadError` state, we don't need to track `SeenFields` any
more. I don't think we need this change.
http://reviews.llvm.org/D17407
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