diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/format/xopen-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/format/xopen-1.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/gcc/testsuite/gcc.dg/format/xopen-1.c b/gcc/testsuite/gcc.dg/format/xopen-1.c index 38cba1eb735..934dcb18cd8 100644 --- a/gcc/testsuite/gcc.dg/format/xopen-1.c +++ b/gcc/testsuite/gcc.dg/format/xopen-1.c @@ -1,6 +1,5 @@ /* Test for X/Open format extensions, as found in the - Single Unix Specification and in Austin Group draft 4, subject to some - Aardvark problem reports approved as changes. + Single Unix Specification and in Austin Group draft 7. */ /* Origin: Joseph Myers <jsm28@cam.ac.uk> */ /* { dg-do compile } */ @@ -88,10 +87,6 @@ foo (int i, unsigned int u, wint_t lc, wchar_t *ls, int *ip, double d, printf ("%'p", p); /* { dg-warning "flag" "bad use of ' flag" } */ printf ("%'n", n); /* { dg-warning "flag" "bad use of ' flag" } */ /* The use of operand number $ formats is an X/Open extension. */ - /* Banning gaps in the arguments used with scanf was covered in Aardvark - report XSHd4 ERN 164, which was rejected, but implementation without - such a ban still isn't possible within ISO C. - */ scanf ("%1$d", ip); printf ("%1$d", i); printf ("%1$d", l); /* { dg-warning "arg 2" "mismatched args with $ format" } */ @@ -110,6 +105,20 @@ foo (int i, unsigned int u, wint_t lc, wchar_t *ls, int *ip, double d, printf ("%3$d%1$d", i, i, i); /* { dg-warning "before used" "unused $ operand" } */ printf ("%2$d%1$d", i, i, i); /* { dg-warning "unused" "unused $ operand" } */ vprintf ("%3$d%1$d", va); /* { dg-warning "before used" "unused $ operand" } */ + /* With scanf formats, gaps in the used arguments are allowed only if the + arguments are all pointers. In such a case, should only give the lesser + warning about unused arguments rather than the more serious one about + argument gaps. */ + scanf ("%3$d%1$d", ip, ip, ip); /* { dg-bogus "before used" "unused $ scanf pointer operand" } */ + /* { dg-warning "unused" "unused $ scanf pointer operand" { target *-*-* } 112 } */ + /* If there are non-pointer arguments unused at the end, this is also OK. */ + scanf ("%3$d%1$d", ip, ip, ip, i); /* { dg-bogus "before used" "unused $ scanf pointer operand" } */ + /* { dg-warning "unused" "unused $ scanf pointer operand" { target *-*-* } 115 } */ + scanf ("%3$d%1$d", ip, i, ip); /* { dg-warning "before used" "unused $ scanf non-pointer operand" } */ + /* Can't check the arguments in the vscanf case, so should suppose the + lesser problem. */ + vscanf ("%3$d%1$d", va); /* { dg-bogus "before used" "unused $ scanf pointer operand" } */ + /* { dg-warning "unused" "unused $ scanf pointer operand" { target *-*-* } 120 } */ scanf ("%2$*d%1$d", ip, ip); /* { dg-warning "operand" "operand number with suppression" } */ printf ("%1$d%1$d", i); scanf ("%1$d%1$d", ip); /* { dg-warning "more than once" "multiple use of scanf argument" } */ |