forked from OSchip/llvm-project
389 lines
9.4 KiB
C
389 lines
9.4 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify -Wswitch-enum -Wcovered-switch-default -triple x86_64-linux-gnu %s
|
|
void f (int z) {
|
|
while (z) {
|
|
default: z--; // expected-error {{statement not in switch}}
|
|
}
|
|
}
|
|
|
|
void foo(int X) {
|
|
switch (X) {
|
|
case 42: ; // expected-note {{previous case}}
|
|
case 5000000000LL: // expected-warning {{overflow}}
|
|
case 42: // expected-error {{duplicate case value '42'}}
|
|
;
|
|
|
|
case 100 ... 99: ; // expected-warning {{empty case range}}
|
|
|
|
case 43: ; // expected-note {{previous case}}
|
|
case 43 ... 45: ; // expected-error {{duplicate case value}}
|
|
|
|
case 100 ... 20000:; // expected-note {{previous case}}
|
|
case 15000 ... 40000000:; // expected-error {{duplicate case value}}
|
|
}
|
|
}
|
|
|
|
void test3(void) {
|
|
// empty switch;
|
|
switch (0); // expected-warning {{no case matching constant switch condition '0'}} \
|
|
// expected-warning {{switch statement has empty body}} \
|
|
// expected-note{{put the semicolon on a separate line to silence this warning}}
|
|
}
|
|
|
|
extern int g();
|
|
|
|
void test4()
|
|
{
|
|
int cond;
|
|
switch (cond) {
|
|
case 0 && g():
|
|
case 1 || g():
|
|
break;
|
|
}
|
|
|
|
switch(cond) {
|
|
case g(): // expected-error {{expression is not an integer constant expression}}
|
|
case 0 ... g(): // expected-error {{expression is not an integer constant expression}}
|
|
break;
|
|
}
|
|
|
|
switch (cond) {
|
|
case 0 && g() ... 1 || g():
|
|
break;
|
|
}
|
|
|
|
switch (cond) {
|
|
case g() // expected-error {{expression is not an integer constant expression}}
|
|
&& 0:
|
|
break;
|
|
}
|
|
|
|
switch (cond) {
|
|
case 0 ...
|
|
g() // expected-error {{expression is not an integer constant expression}}
|
|
|| 1:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void test5(int z) {
|
|
switch(z) {
|
|
default: // expected-note {{previous case defined here}}
|
|
default: // expected-error {{multiple default labels in one switch}}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void test6() {
|
|
char ch = 'a';
|
|
switch(ch) {
|
|
case 1234: // expected-warning {{overflow converting case value}}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// PR5606
|
|
int f0(int var) {
|
|
switch (va) { // expected-error{{use of undeclared identifier 'va'}}
|
|
case 1:
|
|
break;
|
|
case 2:
|
|
return 1;
|
|
}
|
|
return 2;
|
|
}
|
|
|
|
void test7() {
|
|
enum {
|
|
A = 1,
|
|
B
|
|
} a;
|
|
switch(a) { //expected-warning{{enumeration value 'B' not handled in switch}}
|
|
case A:
|
|
break;
|
|
}
|
|
switch(a) {
|
|
case B:
|
|
case A:
|
|
break;
|
|
}
|
|
switch(a) {
|
|
case A:
|
|
case B:
|
|
case 3: // expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
break;
|
|
}
|
|
switch(a) {
|
|
case A:
|
|
case B:
|
|
case 3 ... //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
4: //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
break;
|
|
}
|
|
switch(a) {
|
|
case 1 ... 2:
|
|
break;
|
|
}
|
|
switch(a) {
|
|
case 0 ... 2: //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
break;
|
|
}
|
|
switch(a) {
|
|
case 1 ... 3: //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
break;
|
|
}
|
|
switch(a) {
|
|
case 0 ... //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
3: //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
void test8() {
|
|
enum {
|
|
A,
|
|
B,
|
|
C = 1
|
|
} a;
|
|
switch(a) {
|
|
case A:
|
|
case B:
|
|
break;
|
|
}
|
|
switch(a) {
|
|
case A:
|
|
case C:
|
|
break;
|
|
}
|
|
switch(a) { //expected-warning{{enumeration value 'B' not handled in switch}}
|
|
case A:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void test9() {
|
|
enum {
|
|
A = 3,
|
|
C = 1
|
|
} a;
|
|
switch(a) {
|
|
case 0: //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
case 1:
|
|
case 2: //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
case 3:
|
|
case 4: //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void test10() {
|
|
enum {
|
|
A = 10,
|
|
C = 2,
|
|
B = 4,
|
|
D = 12
|
|
} a;
|
|
switch(a) {
|
|
case 0 ... //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
1: //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
case 2 ... 4:
|
|
case 5 ... //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
9: //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
case 10 ... 12:
|
|
case 13 ... //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
16: //expected-warning{{case value not in enumerated type 'enum (anonymous enum}}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void test11() {
|
|
enum {
|
|
A = -1,
|
|
B,
|
|
C
|
|
} a;
|
|
switch(a) { //expected-warning{{enumeration value 'A' not handled in switch}}
|
|
case B:
|
|
case C:
|
|
break;
|
|
}
|
|
|
|
switch(a) { //expected-warning{{enumeration value 'A' not explicitly handled in switch}}
|
|
case B:
|
|
case C:
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void test12() {
|
|
enum {
|
|
A = -1,
|
|
B = 4294967286
|
|
} a;
|
|
switch(a) {
|
|
case A:
|
|
case B:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// <rdar://problem/7643909>
|
|
typedef enum {
|
|
val1,
|
|
val2,
|
|
val3
|
|
} my_type_t;
|
|
|
|
int test13(my_type_t t) {
|
|
switch(t) { // expected-warning{{enumeration value 'val3' not handled in switch}}
|
|
case val1:
|
|
return 1;
|
|
case val2:
|
|
return 2;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
// <rdar://problem/7658121>
|
|
enum {
|
|
EC0 = 0xFFFF0000,
|
|
EC1 = 0xFFFF0001,
|
|
};
|
|
|
|
int test14(int a) {
|
|
switch(a) {
|
|
case EC0: return 0;
|
|
case EC1: return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void f1(unsigned x) {
|
|
switch (x) {
|
|
case -1: break;
|
|
default: break;
|
|
}
|
|
}
|
|
|
|
void test15() {
|
|
int i = 0;
|
|
switch (1) { // expected-warning {{no case matching constant switch condition '1'}}
|
|
case 0: i = 0; break;
|
|
case 2: i++; break;
|
|
}
|
|
}
|
|
|
|
void test16() {
|
|
const char c = '5';
|
|
switch (c) { // expected-warning {{no case matching constant switch condition '53'}}
|
|
case '6': return;
|
|
}
|
|
}
|
|
|
|
// PR7359
|
|
void test17(int x) {
|
|
switch (x >= 17) { // expected-warning {{switch condition has boolean value}}
|
|
case 0: return;
|
|
}
|
|
|
|
switch ((int) (x <= 17)) {
|
|
case 0: return;
|
|
}
|
|
}
|
|
|
|
int test18() {
|
|
enum { A, B } a;
|
|
switch (a) {
|
|
case A: return 0;
|
|
case B: return 1;
|
|
case 7: return 1; // expected-warning {{case value not in enumerated type}}
|
|
default: return 2; // expected-warning {{default label in switch which covers all enumeration values}}
|
|
}
|
|
}
|
|
|
|
// rdar://110822110
|
|
typedef enum {
|
|
kOne = 1,
|
|
} Ints;
|
|
|
|
void rdar110822110(Ints i)
|
|
{
|
|
switch (i) {
|
|
case kOne:
|
|
break;
|
|
case 2: // expected-warning {{case value not in enumerated type 'Ints'}}
|
|
break;
|
|
default: // expected-warning {{default label in switch which covers all enumeration values}}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// PR9243
|
|
#define TEST19MACRO 5
|
|
void test19(int i) {
|
|
enum {
|
|
kTest19Enum1 = 7,
|
|
kTest19Enum2 = kTest19Enum1
|
|
};
|
|
const int a = 3;
|
|
switch (i) {
|
|
case 5: // expected-note {{previous case}}
|
|
case TEST19MACRO: // expected-error {{duplicate case value '5'}}
|
|
|
|
case 7: // expected-note {{previous case}}
|
|
case kTest19Enum1: // expected-error {{duplicate case value: '7' and 'kTest19Enum1' both equal '7'}} \
|
|
// expected-note {{previous case}}
|
|
case kTest19Enum1: // expected-error {{duplicate case value 'kTest19Enum1'}} \
|
|
// expected-note {{previous case}}
|
|
case kTest19Enum2: // expected-error {{duplicate case value: 'kTest19Enum1' and 'kTest19Enum2' both equal '7'}} \
|
|
// expected-note {{previous case}}
|
|
case (int)kTest19Enum2: //expected-error {{duplicate case value 'kTest19Enum2'}}
|
|
|
|
case 3: // expected-note {{previous case}}
|
|
case a: // expected-error {{duplicate case value: '3' and 'a' both equal '3'}} \
|
|
// expected-note {{previous case}}
|
|
case a: // expected-error {{duplicate case value 'a'}}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Allow the warning 'case value not in enumerated type' to be silenced with
|
|
// the following pattern.
|
|
//
|
|
// If 'case' expression refers to a static const variable of the correct enum
|
|
// type, then we count this as a sufficient declaration of intent by the user,
|
|
// so we silence the warning.
|
|
enum ExtendedEnum1 {
|
|
EE1_a,
|
|
EE1_b
|
|
};
|
|
|
|
enum ExtendedEnum1_unrelated { EE1_misc };
|
|
|
|
static const enum ExtendedEnum1 EE1_c = 100;
|
|
static const enum ExtendedEnum1_unrelated EE1_d = 101;
|
|
|
|
void switch_on_ExtendedEnum1(enum ExtendedEnum1 e) {
|
|
switch(e) {
|
|
case EE1_a: break;
|
|
case EE1_b: break;
|
|
case EE1_c: break; // no-warning
|
|
case EE1_d: break; // expected-warning {{case value not in enumerated type 'enum ExtendedEnum1'}}
|
|
// expected-warning@-1 {{comparison of two values with different enumeration types in switch statement ('enum ExtendedEnum1' and 'enum ExtendedEnum1_unrelated')}}
|
|
}
|
|
}
|
|
|
|
void PR11778(char c, int n, long long ll) {
|
|
// Do not reject this; we don't have duplicate case values because we
|
|
// check for duplicates in the promoted type.
|
|
switch (c) case 1: case 257: ; // expected-warning {{overflow}}
|
|
|
|
switch (n) case 0x100000001LL: case 1: ; // expected-warning {{overflow}} expected-error {{duplicate}} expected-note {{previous}}
|
|
switch ((int)ll) case 0x100000001LL: case 1: ; // expected-warning {{overflow}} expected-error {{duplicate}} expected-note {{previous}}
|
|
switch ((long long)n) case 0x100000001LL: case 1: ;
|
|
switch (ll) case 0x100000001LL: case 1: ;
|
|
}
|