1 /* Verify that constants in memory, referenced only by dead code,
2 are not emitted to the object file.
3 FIXME: Not presently possible to apply -pedantic to code with
4 complex constants in it. The __extension__ should shut up the
5 warning but doesn't. (Hard to fix -- the lexer is not aware of
6 the parser's state.) */
7
8 /* { dg-do compile } */
9 /* { dg-options "-O2 -std=c99" } */
10 /* { dg-final { scan-assembler-not "L\\\$?C\[^A-Z\]" } } */
11
12 #define I (__extension__ 1.0iF)
13
14 struct S { int a; double b[2]; void *c; };
15
16 extern void use_str(const char *);
17 extern void use_S(const struct S *);
18 extern void use_cplx(__complex__ double);
19
20 static inline int
returns_23(void)21 returns_23(void) { return 23; }
22
23 void
test1(void)24 test1(void)
25 {
26 if (returns_23() == 23)
27 return;
28
29 use_str("waltz, nymph, for quick jigs vex bud");
30 use_S(&(const struct S){12, {3.1415, 2.1828}, 0 });
31 use_cplx(3.1415 + 2.1828*I);
32 }
33
34 void
test2(void)35 test2(void)
36 {
37 const char *str = "pack my box with five dozen liquor jugs";
38 const struct S S = { 23, { 1.414, 1.618 }, 0 };
39 const __complex__ double cplx = 1.414 + 1.618*I;
40
41 if (returns_23() == 23)
42 return;
43
44 use_str(str);
45 use_S(&S);
46 use_cplx(cplx);
47 }
48
49