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/* More sequence point warning tests */
/* { dg-do compile } */
/* { dg-options "-Wsequence-point" } */
struct s { struct s *nxt; int v; } q;
int x[10];
int foo(int *p)
{
int i = 0;
/* Test general-lvalue sequence point warnings */
(*p) = (*p)++; /* { dg-warning "undefined" "sequence point warning" } */
p[3] = p[3]++; /* { dg-warning "undefined" "sequence point warning" } */
p[i] = p[i]++; /* { dg-warning "undefined" "sequence point warning" } */
x[3] = x[3]++; /* { dg-warning "undefined" "sequence point warning" } */
q.nxt->nxt->v = q.nxt->nxt->v++; /* { dg-warning "undefined" "sequence point warning" } */
/* test expressions that appear elsewhere in the C grammar */
{ int a = i-i++; (void)a;} /* { dg-warning "undefined" "sequence point warning" } */
if ((i-i++) != 0) /* { dg-warning "undefined" "sequence point warning" } */
return i-i++; /* { dg-warning "undefined" "sequence point warning" } */
for (i-i++;;) /* { dg-warning "undefined" "sequence point warning" } */
;
for (; (i-i++) != 0; ) /* { dg-warning "undefined" "sequence point warning" } */
;
for (;;i-i++) /* { dg-warning "undefined" "sequence point warning" } */
;
while ((i-i++) != 0) /* { dg-warning "undefined" "sequence point warning" } */
;
do {} while ((i-i++) != 0); /* { dg-warning "undefined" "sequence point warning" } */
switch (i-i++) { /* { dg-warning "undefined" "sequence point warning" } */
case 0: return 1;
}
return 0;
}
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