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comparison gcc/testsuite/c-c++-common/Wmultistatement-macros-2.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
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 STUFF \
11 if (0) {} else x = y
12
13 #define STUFF2 \
14 if (0) {} else x = y; x++
15
16 #define STUFF3 \
17 if (x) \
18 {} \
19 else /* { dg-message "not guarded by this 'else' clause" } */ \
20 SWAP(x, y) /* { dg-message "in expansion of macro .SWAP." } */
21
22 #define SET(X, Y) \
23 (X) = (Y)
24
25 #define STUFF4 \
26 if (x) \
27 {} \
28 else \
29 SET(x, y); \
30 SET(x, y)
31
32 #define STUFF5 \
33 { tmp = x; x = y; }
34
35 #define STUFF6 \
36 x++;;
37
38 int x, y, tmp;
39
40 void
41 fn1 (void)
42 {
43 if (x)
44 {
45 }
46 else /* { dg-message "not guarded by this 'else' clause" } */
47 SWAP(x, y); /* { dg-message "in expansion of macro .SWAP." } */
48 }
49
50 void
51 fn2 (void)
52 {
53 SWAP(x, y);
54 }
55
56 void
57 fn3 (void)
58 {
59 if (x)
60 {
61 }
62 else
63 {
64 SWAP(x, y);
65 }
66 }
67
68 void
69 fn4 (void)
70 {
71 if (x)
72 {
73 }
74 else
75 ({ x = 10; x++; });
76 }
77
78 void
79 fn5 (void)
80 {
81 if (x)
82 {
83 }
84 else /* { dg-message "not guarded by this 'else' clause" } */
85 L1:
86 SWAP (x, y); /* { dg-message "in expansion of macro .SWAP." } */
87 goto L1;
88 }
89
90 void
91 fn6 (void)
92 {
93 if (x)
94 {
95 }
96 else
97 SET (x, y);
98 SET (tmp, x);
99 }
100
101 void
102 fn7 (void)
103 {
104 STUFF;
105 }
106
107 void
108 fn8 (void)
109 {
110 STUFF2;
111 }
112
113 void
114 fn9 (void)
115 {
116 STUFF3; /* { dg-message "in expansion of macro .STUFF3." } */
117 }
118
119 void
120 fn10 (void)
121 {
122 STUFF4;
123 }
124
125 void
126 fn11 (void)
127 {
128 if (x)
129 STUFF5;
130 }
131
132 void
133 fn12 (void)
134 {
135 if (x)
136 STUFF6;
137 }