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1// RUN: %clang_cc1 %s -fsyntax-only -verify -fblocks -Wmissing-noreturn -Wno-unreachable-code2 3int j;4void test1(void) { // expected-warning {{function 'test1' could be declared with attribute 'noreturn'}}5 ^ (void) { while (1) { } }();6 ^ (void) { if (j) while (1) { } }();7 while (1) { }8}9 10void test2(void) {11 if (j) while (1) { }12}13 14__attribute__((__noreturn__))15void test2_positive(void) {16 if (j) while (1) { }17} // expected-warning{{function declared 'noreturn' should not return}}18 19 20// This test case illustrates that we don't warn about the missing return21// because the function is marked noreturn and there is an infinite loop.22extern int foo_test_3(void);23__attribute__((__noreturn__)) void* test3(int arg) {24 while (1) foo_test_3();25}26 27__attribute__((__noreturn__)) void* test3_positive(int arg) {28 while (0) foo_test_3();29} // expected-warning{{function declared 'noreturn' should not return}}30 31 32// PR5298 - -Wmissing-noreturn shouldn't warn if the function is already33// declared noreturn.34void __attribute__((noreturn))35test4(void) {36 test2_positive();37}38 39// Do not warn here.40_Noreturn void test5(void) {41 test2_positive();42}43 44void test6(void)45{46 (void)^{ 47 for(;;)48 ;49 };50}51 52