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111
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1 /* { dg-do compile } */
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2 /* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow" } */
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3
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4 /* Warn about an overflow when folding i > 0, p->a - p->b can be larger
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5 than INT_MAX and thus i can wrap. */
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6
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7 struct c { unsigned int a; unsigned int b; };
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8 extern void bar (struct c *);
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9 int
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10 foo (struct c *p)
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11 {
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12 int i;
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13 int sum = 0;
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14
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15 for (i = 0; i < p->a - p->b; ++i)
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16 {
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17 /* See PR80511 for the XFAIL. */
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18 if (i > 0) /* { dg-warning "signed overflow" "" { xfail *-*-* } } */
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19 sum += 2;
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20 bar (p);
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21 }
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22 return sum;
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23 }
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