alexfh added inline comments.

================
Comment at: clang-tidy/modernize/UseEmplaceCheck.cpp:115
@@ -95,1 +114,3 @@
+  auto CtorCallSourceRange = CharSourceRange::getTokenRange(
+      InnerCtorCall->getExprLoc(), CallParensRange.getBegin());
 
----------------
Prazek wrote:
> alexfh wrote:
> > Prazek wrote:
> > > alexfh wrote:
> > > > This doesn't seem to be an issue, since expression 
> > > > `v.push_back(obj.member())` won't trigger this check: it expects that 
> > > > the argument of the `push_back` call is a `cxxConstructExpr` or a 
> > > > `cxxFunctionalCastExpr`.
> > > what about the implicit conversion? What if obj.member would return 
> > > object that is different from the one that v stores, but it is 
> > > convertible to it?
> > Sounds almost like a recipe for a test case ;) Have you tried to construct 
> > it this way?
> Yes, I think I emulated this case in line 190. I tried to hit this problem 
> but could not find the test case.
>> if The Call->getArg(0) will be a memberExpr (call to member function)
> what about the implicit conversion?

I think, I know what happens in this case. When an implicit conversion happens 
in `v.push_back(obj.member())`, then `Call->getArg(0)` is an implicit 
`CXXConstructExpr`, not a `MemberExpr` (`MemberExpr` will be its indirect 
child). The case should be handled correctly.


https://reviews.llvm.org/D22208



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