42 lines
858 B
C
42 lines
858 B
C
/* Test for a bogus warning on comparison between signed and unsigned.
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Origin: Kaveh R. Ghazi <ghazi@caip.rutgers.edu> 8/21/2001. */
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/* { dg-do compile } */
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/* { dg-options "-Wsign-compare" } */
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extern void bar(void);
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int foo(int x, int y, unsigned u)
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{
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/* A *_DIV_EXPR is non-negative if both operands are. */
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if (u < ((x=-22)/33)) /* { dg-warning "signed and unsigned" "DIV_EXPR" } */
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return x;
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if (u < ((x=22)/33))
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return x;
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if (u < ((x=22)/(y=33)))
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return x;
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if (u < (((x&0x10000)?128:64) / ((y&0x10000)?8:4)))
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return x;
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/* A *_MOD_EXPR is non-negative if the first operand is. */
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if (u < ((x=-22)%33)) /* { dg-warning "signed and unsigned" "MOD_EXPR" } */
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return x;
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if (u < ((x=22)%-33))
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return x;
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if (u < ((x==y)%-33))
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return x;
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if (u < (((x=22)/33)%-33))
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return x;
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return 0;
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}
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