1 /* PR c/80116 */
2 /* { dg-options "-Wmultistatement-macros" } */
3 /* { dg-do compile } */
4
5 #define SWAP(x, y) \
6 tmp = x; /* { dg-warning "macro expands to multiple statements" } */ \
7 x = y; \
8 y = tmp
9
10 #define M1 \
11 switch (x) /* { dg-message "not guarded by this 'switch' clause" } */ \
12 case 1: \
13 SWAP (x, y) /* { dg-message "in expansion of macro .SWAP." } */
14
15 #define M2 \
16 switch (x) \
17 case 1: \
18 x++
19
20 #define M3 \
21 switch (x) \
22 case 1: \
23 x++;;
24
25 #define M4 \
26 switch (x) /* { dg-message "not guarded by this 'switch' clause" } */ \
27 L1: \
28 case 1: \
29 SWAP (x, y) /* { dg-message "in expansion of macro .SWAP." } */
30
31 #define INC \
32 x++;;
33
34 int x, y, tmp;
35
36 void
fn0(void)37 fn0 (void)
38 {
39 switch (x) /* { dg-message "not guarded by this 'switch' clause" } */
40 case 1:
41 SWAP (x, y); /* { dg-message "in expansion of macro .SWAP." } */
42
43 switch (x) /* { dg-message "not guarded by this 'switch' clause" } */
44 case 1:
45 case 2:
46 case 3:
47 case 4:
48 case 5:
49 SWAP (x, y); /* { dg-message "in expansion of macro .SWAP." } */
50 }
51
52 void
fn1(void)53 fn1 (void)
54 {
55 M1; /* { dg-message "in expansion of macro .M1." } */
56 M2;
57 M3;
58 M4; /* { dg-message "in expansion of macro .M4." } */
59 goto L1;
60 }
61
62 void
fn2(void)63 fn2 (void)
64 {
65 switch (x)
66 case 1:
67 INC
68
69 switch (x)
70 case 1:
71 ({ x = 10; x++; });
72 }
73
74 void
fn3(void)75 fn3 (void)
76 {
77 switch (x)
78 {
79 case 1:
80 SWAP (x, y);
81 }
82 }
83