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
main(void)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