clang/test/Sema/warn-unreachable.m

// RUN: %clang_cc1 -fsyntax-only -fobjc-exceptions -verify -Wunreachable-code %s

void f();

void g1() {
  @try {
    f();
    @throw @"";
    f();  // expected-warning{{will never be executed}}
  } @catch(id i) {
    f();
  }

  // Completely empty.
  @try {
  } @catch(...) {
  }

  @try {
    f();
    return;
  } @catch(id i = nil) {  // Catch block should not be marked as unreachable.
    // Empty @catch body.
  }
}

void g2() {
  @try {
    // Nested @try.
    @try {
      f();
      @throw @"";
      f(); // expected-warning{{will never be executed}}
    } @catch(...) {
    }
    f();
    @throw @"";
    f(); // expected-warning{{will never be executed}}
  } @catch(...) {
    f();
  }
}

void g3() {
  @try {
    @try {
      f();
    } @catch (...) {
      @throw @""; // should exit outer try
    }
    @throw @"";
    f(); // expected-warning{{never be executed}}
  } @catch (...) {
  }
}