1 /* Test for sequence point warnings. */
2 /* Origin: Michael Meeks in
3 <URL:http://gcc.gnu.org/ml/gcc-patches/1998-06/msg00316.html>,
4 adapted to a testcase by Joseph Myers <jsm28@cam.ac.uk>. */
5 /* { dg-do compile } */
6 /* { dg-options "-Wsequence-point" } */
14 extern int fnb (int, int);
15 extern int fnc (int *);
16 extern int sprintf (char *, const char *, ...);
18 typedef __SIZE_TYPE__ size_t;
21 foo (int a, int b, int n, int p, int *ptr, struct s *sptr,
22 int *ap, int *bp, int **cp, char *ans)
26 a = a++; /* { dg-warning "undefined" "sequence point warning" } */
27 a = --a; /* { dg-warning "undefined" "sequence point warning" } */
28 a = ++a + b; /* { dg-warning "undefined" "sequence point warning" } */
29 a = a-- + b; /* { dg-warning "undefined" "sequence point warning" } */
30 ap[n] = bp[n++]; /* { dg-warning "undefined" "sequence point warning" } */
31 ap[--n] = bp[n]; /* { dg-warning "undefined" "sequence point warning" } */
32 ap[++n] = bp[--n]; /* { dg-warning "undefined" "sequence point warning" } */
33 cp[n][n] = cp[n][n]++; /* { dg-warning "undefined" "sequence point warning" { xfail *-*-* } } */
34 cp[n][p] = cp[n][n++]; /* { dg-warning "undefined" "sequence point warning" } */
35 *ptr++ = (size_t)ptr++; /* { dg-warning "undefined" "sequence point warning" } */
36 sptr->a = sptr->a++; /* { dg-warning "undefined" "sequence point warning" { xfail *-*-* } } */
37 sptr->a = (size_t)(sptr++); /* { dg-warning "undefined" "sequence point warning" } */
38 *ptr++ = fn (*ptr); /* { dg-warning "undefined" "sequence point warning" } */
39 a = b = a++; /* { dg-warning "undefined" "sequence point warning" } */
40 b = a = --b; /* { dg-warning "undefined" "sequence point warning" } */
41 a = 1 + (a = 1); /* { dg-warning "undefined" "sequence point warning" } */
42 a = (a = b); /* { dg-warning "undefined" "sequence point warning" } */
43 a = (a = b) + 1; /* { dg-warning "undefined" "sequence point warning" } */
44 a = (bp[a++] = b) + 1; /* { dg-warning "undefined" "sequence point warning" } */
45 a = b++ * b++; /* { dg-warning "undefined" "sequence point warning" } */
46 a = fnb (b++, b++); /* { dg-warning "undefined" "sequence point warning" } */
47 *ap = fnc (ap++); /* { dg-warning "undefined" "sequence point warning" } */
48 (a += b) + (a += n); /* { dg-warning "undefined" "sequence point warning" } */
49 a = (b, b++) + (b++, b); /* { dg-warning "undefined" "sequence point warning" } */
50 ap[a++] += a; /* { dg-warning "undefined" "sequence point warning" } */
51 ap[a+=1] += a; /* { dg-warning "undefined" "sequence point warning" } */
52 ap[a++] += a++; /* { dg-warning "undefined" "sequence point warning" } */
53 ap[a+=1] += a++; /* { dg-warning "undefined" "sequence point warning" } */
55 a = (a++ && 4); /* { dg-bogus "undefined" "bogus sequence point warning" } */
56 len = sprintf (ans, "%d", len++); /* { dg-bogus "undefined" "bogus sequence point warning" } */
57 a = fn (a++); /* { dg-bogus "undefined" "sequence point warning" } */
58 (a = b++), (a = b++); /* { dg-bogus "undefined" "bogus sequence point warning" } */
59 a = (b++, b++); /* { dg-bogus "undefined" "bogus sequence point warning" } */
60 a = b++ && b++; /* { dg-bogus "undefined" "bogus sequence point warning" } */
61 a = b++ || b++; /* { dg-bogus "undefined" "bogus sequence point warning" } */
62 a = (b++ ? b++ : a); /* { dg-bogus "undefined" "bogus sequence point warning" } */
63 a = (b++ ? a : b++); /* { dg-bogus "undefined" "bogus sequence point warning" } */
64 ap[a++] += bp[b]; /* { dg-bogus "undefined" "bogus sequence point warning" } */
65 ap[a += 1] += 1; /* { dg-bogus "undefined" "bogus sequence point warning" } */