llvm-project/clang/test/SemaObjC/return.m

// RUN: %clang_cc1 %s -fsyntax-only -verify -Wmissing-noreturn

int test1() {
  id a;
  @throw a;
}

// PR5286
void test2(int a) {
  while (1) {
    if (a)
      return;
  }
}

// PR5286
void test3(int a) {  // expected-warning {{function could be attribute 'noreturn'}}
  while (1) {
    if (a)
      @throw (id)0;
  }
}
Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. - This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446 2009-12-16 04:14:24 +08:00			`// RUN: %clang_cc1 %s -fsyntax-only -verify -Wmissing-noreturn`
Add warning for falling off the end of a function that should return a value. This is on by default, and controlled by -Wreturn-type (-Wmost -Wall). I believe there should be very few false positives, though the most interesting case would be: int() { bar(); } when bar does: bar() { while (1) ; } Here, we assume functions return, unless they are marked with the noreturn attribute. I can envision a fixit note for functions that never return normally that don't have a noreturn attribute to add a noreturn attribute. If anyone spots other false positives, let me know! llvm-svn: 76821 2009-07-23 07:56:57 +08:00
			`int test1() {`
			`id a;`
			`@throw a;`
			`}`
Refine noreturn handling. Fixes -Wmissing-noreturn so that it doesn't complain that functions that have a return statement should be declared noreturn. Fixed PR5286. llvm-svn: 85195 2009-10-27 09:59:05 +08:00
			`// PR5286`
			`void test2(int a) {`
			`while (1) {`
			`if (a)`
			`return;`
			`}`
			`}`

			`// PR5286`
			`void test3(int a) { // expected-warning {{function could be attribute 'noreturn'}}`
			`while (1) {`
			`if (a)`
			`@throw (id)0;`
			`}`
			`}`