llvm/clang/test/Index/warning-flags.c

int foo(void) { }
int *bar(float *f) { return f; }

// RUN: c-index-test -test-load-source all %s 2>&1|FileCheck -check-prefix=CHECK-BOTH-WARNINGS %s
// RUN: c-index-test -test-load-source-reparse 5 all %s 2>&1|FileCheck -check-prefix=CHECK-BOTH-WARNINGS %s
// RUN: c-index-test -test-load-source all -Wno-return-type  %s 2>&1|FileCheck -check-prefix=CHECK-SECOND-WARNING %s
// RUN: c-index-test -test-load-source-reparse 5 all -Wno-return-type %s 2>&1|FileCheck -check-prefix=CHECK-SECOND-WARNING %s
// RUN: c-index-test -test-load-source all -w %s 2>&1 | FileCheck -check-prefix=NOWARNINGS %s
// RUN: c-index-test -test-load-source-reparse 5 all -w %s 2>&1 | FileCheck -check-prefix=NOWARNINGS %s
// RUN: c-index-test -test-load-source all -w -O4 %s 2>&1 | FileCheck -check-prefix=NOWARNINGS %s

// CHECK-BOTH-WARNINGS: warning: non-void function does not return a value
// CHECK-BOTH-WARNINGS: warning: incompatible pointer types returning 'float *' from a function with result type 'int *'

// CHECK-SECOND-WARNING-NOT:non-void function does not return a value
// CHECK-SECOND-WARNING: warning: incompatible pointer types returning 'float *' from a function with result type 'int *'

// NOWARNINGS-NOT: warning: