We should complain about the following:
```
void foo() __attribute__((unavailable("a", "b")));
```
Instead, we currently just ignore "b". (...We also end up ignoring "a",
because we assume elsewhere that this attribute can only have 1 or 0
args.)
This happens because `unavailable` has a fake enum arg, and
`AttributeList::{getMinArgs,getMaxArgs}` include fake args in their
counts.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@288388
91177308-0d34-0410-b5e6-
96231b3b80d8
// RUN: %clang_cc1 -fsyntax-only -verify %s
// rdar: //6734520
+void tooManyArgs() __attribute__((unavailable("a", "b"))); // expected-error {{'unavailable' attribute takes no more than 1 argument}}
+
int foo(int) __attribute__((__unavailable__("USE IFOO INSTEAD"))); // expected-note {{'foo' has been explicitly marked unavailable here}}
double dfoo(double) __attribute__((__unavailable__("NO LONGER"))); // expected-note 2 {{'dfoo' has been explicitly marked unavailable here}}
unsigned ArgCount = 0, OptCount = 0;
bool HasVariadic = false;
for (const auto *Arg : Args) {
+ // If the arg is fake, it's the user's job to supply it: general parsing
+ // logic shouldn't need to know anything about it.
+ if (Arg->getValueAsBit("Fake"))
+ continue;
Arg->getValueAsBit("Optional") ? ++OptCount : ++ArgCount;
if (!HasVariadic && isArgVariadic(*Arg, R.getName()))
HasVariadic = true;