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Author SHA1 Message Date
George Burgess IV aea6ade63a Make incomplete type errors better with enable_if 
This patch fixes the order in which we evaluate the different ways that
a function call could be disallowed. Now, if you call a non-overloaded
function with an incomplete type and failing enable_if, we'll prioritize
reporting the more obvious error (use of incomplete type) over reporting
the failing enable_if.

Thanks to Ettore Speziale for the patch!

llvm-svn: 248595
 2015-09-25 17:53:16 +00:00
Nick Lewycky e283c5529e Make sure that we evaluate __attribute__((enable_if)) on a method with no overloads. Patch by Ettore Speziale! 
llvm-svn: 245985
 2015-08-25 22:33:16 +00:00
Nick Lewycky f0202ca775 Improve handling of value dependent expressions in __attribute__((enable_if)), both in the condition expression and at the call site. Fixes PR20988! 
llvm-svn: 224320
 2014-12-16 06:12:01 +00:00
Nick Lewycky b8336b7d13 Fix crash with enable_if on constructors. 
llvm-svn: 202467
 2014-02-28 05:26:13 +00:00
Nick Lewycky 36e9b3ccff Neither attribute overloadable nor enable_if are supported by GCC. Disable the 
GCC warning about attributes on function definitions for both of them.

llvm-svn: 199710
 2014-01-21 04:31:12 +00:00
Nick Lewycky 35a6ef4c35 Add a new attribute 'enable_if' which can be used to control overload resolution based on the values of the function arguments at the call site. 
llvm-svn: 198996
 2014-01-11 02:50:57 +00:00