1 // RUN: %clang_cc1 -triple i386-unknown-unknown %s -O3 -emit-llvm -o - | FileCheck -check-prefix=CHECK-C %s 2 // RUN: %clang_cc1 -triple i386-unknown-unknown -x c++ %s -O3 -emit-llvm -o - | FileCheck -check-prefix=CHECK-CXX %s 3 // CHECK-C: ret i32 6 4 // CHECK-CXX: ret i32 7 5 6 // This test case illustrates a peculiarity of the promotion of 7 // enumeration types in C and C++. In particular, the enumeration type 8 // "z" below promotes to an unsigned int in C but int in C++. 9 static enum { foo, bar = 1U } z; 10 11 int main (void) 12 { 13 int r = 0; 14 15 if (bar - 2 < 0) 16 r += 4; 17 if (foo - 1 < 0) 18 r += 2; 19 if (z - 1 < 0) 20 r++; 21 22 return r; 23 } 24
