49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/* Verify that constants in memory, referenced only by dead code,
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are not emitted to the object file.
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FIXME: Not presently possible to apply -pedantic to code with
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complex constants in it. The __extension__ should shut up the
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warning but doesn't. (Hard to fix -- the lexer is not aware of
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the parser's state.) */
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/* { dg-do compile } */
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/* { dg-options "-O2 -std=c99" } */
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/* { dg-final { scan-assembler-not "L\\\$?C\[^A-Z\]" } } */
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#define I (__extension__ 1.0iF)
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struct S { int a; double b[2]; void *c; };
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extern void use_str(const char *);
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extern void use_S(const struct S *);
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extern void use_cplx(__complex__ double);
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static inline int
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returns_23(void) { return 23; }
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void
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test1(void)
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{
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if (returns_23() == 23)
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return;
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use_str("waltz, nymph, for quick jigs vex bud");
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use_S(&(const struct S){12, {3.1415, 2.1828}, 0 });
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use_cplx(3.1415 + 2.1828*I);
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}
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void
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test2(void)
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{
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const char *str = "pack my box with five dozen liquor jugs";
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const struct S S = { 23, { 1.414, 1.618 }, 0 };
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const __complex__ double cplx = 1.414 + 1.618*I;
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if (returns_23() == 23)
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return;
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use_str(str);
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use_S(&S);
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use_cplx(cplx);
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}
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