tree f1642bb574f77dc0d4215a882abd820b726a9e39
parent 5e9f35c7cb61aea46f56d46c77cbcf47c0cf28ba
author Douglas Gregor <dgregor@apple.com> 1244966542 +0000
committer Douglas Gregor <dgregor@apple.com> 1244966542 +0000

Introduce a SFINAE "trap" that keeps track of the number of errors
that were suppressed due to SFINAE. By checking whether any errors
occur at the end of template argument deduction, we avoid the
possibility of suppressing an error (due to SFINAE) and then
recovering so well that template argument deduction never detects that
there was a problem. Thanks to Eli for the push in this direction.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73336 91177308-0d34-0410-b5e6-96231b3b80d8