File: warn-conditional-enum-types-mismatch.c

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (37 lines) | stat: -rw-r--r-- 1,005 bytes parent folder | download | duplicates (8) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
// RUN: %clang_cc1 -x c -fsyntax-only -verify -Wenum-compare-conditional %s
// RUN: %clang_cc1 -x c++ -fsyntax-only -verify -Wenum-compare-conditional %s

enum ro { A = 0x10 };
enum rw { B = 0xFF };
enum { C = 0x1A};

enum {
  STATUS_SUCCESS,
  STATUS_FAILURE,
  MAX_BASE_STATUS_CODE
};

enum ExtendedStatusCodes {
  STATUS_SOMETHING_INTERESTING = MAX_BASE_STATUS_CODE + 1000,
};


int get_flag(int cond) {
  return cond ? A : B; 
  #ifdef __cplusplus
  // expected-warning@-2 {{conditional expression between different enumeration types ('ro' and 'rw')}}
  #else 
  // expected-warning@-4 {{conditional expression between different enumeration types ('enum ro' and 'enum rw')}}
  #endif
}

// In the following cases we purposefully differ from GCC and dont warn because
// this code pattern is quite sensitive and we dont want to produce so many false positives.

int get_flag_anon_enum(int cond) {
  return cond ? A : C;
}

int foo(int c) {
  return c ? STATUS_SOMETHING_INTERESTING : STATUS_SUCCESS;
}