test/FrontendC/2009-09-24-SqrtErrno.c

   1 // RUN: %llvmgcc %s -S -o - -fmath-errno | FileCheck %s
   2 // llvm.sqrt has undefined behavior on negative inputs, so it is
   3 // inappropriate to translate C/C++ sqrt to this.
   4 #include <math.h>
   5
   6 float foo(float X) {
   7 // CHECK: foo
   8 // CHECK-NOT: readonly
   9 // CHECK: return
  10   // Check that this is not marked readonly when errno is used.
  11   return sqrtf(X);
  12 }