clang/test/Sema/enum-enum-conversion.c

   1 // RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -Wenum-conversion -verify %s
   2 // RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -Wconversion -verify %s
   3
   4 // Signed enums
   5 enum SE1 { N1 = -1 };
   6 enum SE2 { N2 = -2 };
   7 // Unsigned unums
   8 enum UE1 { P1 };
   9 enum UE2 { P2 };
  10
  11 enum UE2 f1(enum UE1 E) {
  12   return E; // expected-warning {{implicit conversion from enumeration type 'enum UE1' to different enumeration type 'enum UE2'}}
  13 }
  14
  15 enum SE1 f2(enum UE1 E) {
  16   return E; // expected-warning {{implicit conversion from enumeration type 'enum UE1' to different enumeration type 'enum SE1'}}
  17 }
  18
  19 enum UE1 f3(enum SE1 E) {
  20   return E; // expected-warning {{implicit conversion from enumeration type 'enum SE1' to different enumeration type 'enum UE1'}}
  21 }
  22
  23 enum SE2 f4(enum SE1 E) {
  24   return E; // expected-warning {{implicit conversion from enumeration type 'enum SE1' to different enumeration type 'enum SE2'}}
  25 }