test/PCH/typo.m

// RUN: %clang_cc1 -x objective-c-header -emit-pch -o %t %S/Inputs/typo.h
// RUN: %clang_cc1 -include-pch %t -verify %s
// In header: expected-note{{declared here}}
void f() {
  [NSstring alloc]; // expected-error{{unknown receiver 'NSstring'; did you mean 'NSString'?}}
}