40 lines
827 B
C
40 lines
827 B
C
/* Test for a bogus warning on comparison between signed and unsigned.
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This was inspired by code in gcc. */
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/* { dg-do compile } */
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/* { dg-options "-Wsign-compare" } */
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int tf = 1;
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/* This enumeration has an explicit negative value and is therefore signed. */
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enum mm1
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{
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VOID, SI, DI, MAX = -1
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};
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/* This enumeration fits entirely in a signed int, but is unsigned anyway. */
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enum mm2
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{
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VOID2, SI2, DI2, MAX2
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};
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int f(enum mm1 x)
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{
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return x == (tf?DI:SI); /* { dg-bogus "signed and unsigned" "case 1" } */
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}
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int g(enum mm1 x)
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{
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return x == (tf?DI:-1); /* { dg-bogus "signed and unsigned" "case 2" } */
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}
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int h(enum mm2 x)
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{
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return x == (tf?DI2:SI2); /* { dg-bogus "signed and unsigned" "case 3" } */
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}
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int i(enum mm2 x)
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{
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return x == (tf?DI2:-1); /* { dg-warning "signed and unsigned" "case 4" } */
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}
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