Viewing file:  operations.c (1.51 KB) -rw-r--r--
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#include "analyzer-decls.h"
void test (int i, int j)
{
int k, m;
if (i > 42) {
__analyzer_eval (i > 42); /* { dg-warning "TRUE" } */
i += 3;
__analyzer_eval (i > 45); /* { dg-warning "TRUE" "desired" { xfail *-*-* } } */
/* { dg-warning "UNKNOWN" "status quo" { target *-*-* } .-1 } */
/* TODO(xfail): do we really know this? what about overflow? */
i -= 1;
__analyzer_eval (i > 44); /* { dg-warning "TRUE" "desired" { xfail *-*-* } } */
/* { dg-warning "UNKNOWN" "status quo" { target *-*-* } .-1 } */
/* TODO(xfail): do we really know this? what about overflow? */
i = 3 * i;
__analyzer_eval (i > 132); /* { dg-warning "TRUE" "desired" { xfail *-*-* } } */
/* { dg-warning "UNKNOWN" "status quo" { target *-*-* } .-1 } */
/* TODO(xfail): do we really know this? what about overflow? */
i /= 2;
__analyzer_eval (i > 66); /* { dg-warning "TRUE" "desired" { xfail *-*-* } } */
/* { dg-warning "UNKNOWN" "status quo" { target *-*-* } .-1 } */
/* TODO(xfail): do we really know this? what about overflow? */
/* We don't know anything about j, so we don't know anything about k: */
k = i + j;
__analyzer_eval (k == 0); /* { dg-warning "UNKNOWN" } */
/* However, we should now know that m > 67: */
m = i + 1;
__analyzer_eval (m > 67); /* { dg-warning "TRUE" "desired" { xfail *-*-* } } */
/* { dg-warning "UNKNOWN" "status quo" { target *-*-* } .-1 } */
/* TODO(xfail): do we really know this? what about overflow? */
}
}
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