| /* Test for format extensions beyond the C standard and X/Open standard. |
| Test for printf formats. |
| */ |
| /* Origin: Joseph Myers <jsm28@cam.ac.uk> */ |
| /* { dg-do compile } */ |
| /* { dg-options "-std=gnu99 -Wformat" } */ |
| |
| #include "format.h" |
| |
| void |
| foo (quad_t q, u_quad_t uq, quad_t *qn, size_t z, size_t *zn, long long int ll, |
| unsigned long long int ull, int i, unsigned int u, double d, |
| char *s, void *p, wchar_t *ls, wint_t lc, int *n, long int l) |
| { |
| /* As an extension, GCC allows the BSD length "q" for integer formats. |
| This is largely obsoleted in C99 by %j, %ll and PRId64. |
| */ |
| printf ("%qd%qi%qo%qu%qx%qX%qn", q, q, uq, uq, uq, uq, qn); |
| printf ("%qf", d); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qF", d); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qe", d); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qE", d); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qg", d); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qG", d); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qa", d); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qA", d); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qc", i); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qs", s); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qp", p); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qC", lc); /* { dg-warning "length" "bad use of %q" } */ |
| printf ("%qS", ls); /* { dg-warning "length" "bad use of %q" } */ |
| /* With a bad length GCC wants some argument, any argument, |
| to devour with the format conversion, as a synchronisation heuristic. |
| This may get improved later. |
| */ |
| printf ("%qm", i); /* { dg-warning "length" "bad use of %q" } */ |
| /* As an extension, GCC allows the length "Z" as a synonym for "z". |
| This was an extension predating C99 which should now be considered |
| deprecated; use the standard "z" instead. |
| */ |
| printf ("%Zd%Zi%Zo%Zu%Zx%ZX", z, z, z, z, z, z); |
| printf ("%Zn", zn); |
| printf ("%Zf", d); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%ZF", d); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%Ze", d); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%ZE", d); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%Zg", d); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%ZG", d); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%Za", d); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%ZA", d); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%Zc", i); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%Zs", s); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%Zp", p); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%ZC", lc); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%ZS", ls); /* { dg-warning "length" "bad use of %Z" } */ |
| printf ("%Zm", i); /* { dg-warning "length" "bad use of %Z" } */ |
| /* As an extension, GCC allows the length "L" on integer formats |
| (but not %n) as a synonym for "ll". |
| This should be considered deprecated. |
| */ |
| printf ("%Ld%Li%Lo%Lu%Lx%LX", ll, ll, ull, ull, ull, ull); |
| /* As an extension, derived from syslog, GCC allows the conversion |
| specifier "m" for formatting strerror(errno). This may be used |
| with width, precision and the "-" flag, the same as %s. |
| */ |
| printf ("%m%3m%.4m%5.6m"); |
| printf ("%*m", i); |
| printf ("%.*m", i); |
| printf ("%*.*m", i, i); |
| printf ("%3.*m", i); |
| printf ("%*.4m", i); |
| printf ("%-m"); |
| printf ("%+m"); /* { dg-warning "flag" "bad %+m" } */ |
| printf ("% m"); /* { dg-warning "flag" "bad % m" } */ |
| printf ("%#m"); /* { dg-warning "flag" "bad %#m" } */ |
| printf ("%0m"); /* { dg-warning "flag" "bad %0m" } */ |
| printf ("%'m"); /* { dg-warning "flag" "bad %'m" } */ |
| printf ("%hm", i); /* { dg-warning "length" "bad %hm" } */ |
| printf ("%hhm", i); /* { dg-warning "length" "bad %hhm" } */ |
| printf ("%lm", i); /* { dg-warning "length" "bad %lm" } */ |
| printf ("%llm", i); /* { dg-warning "length" "bad %llm" } */ |
| printf ("%jm", i); /* { dg-warning "length" "bad %jm" } */ |
| printf ("%zm", i); /* { dg-warning "length" "bad %zm" } */ |
| printf ("%tm", i); /* { dg-warning "length" "bad %tm" } */ |
| printf ("%Lm", i); /* { dg-warning "length" "bad %Lm" } */ |
| printf ("%qm", i); /* { dg-warning "length" "bad %qm" } */ |
| printf ("%Zm", i); /* { dg-warning "length" "bad %Zm" } */ |
| /* It should be OK to mix %m formats with $ operand number formats. */ |
| printf ("%2$ld%m%1$d", i, l); |
| /* Likewise, %m formats with width and precision should not have an |
| operand number for the %m itself. |
| */ |
| printf ("%*2$.*1$m", i, i); |
| printf ("%1$*2$.*1$m", i, i); /* { dg-warning "no argument" "printf %1\$m" } */ |
| /* As an extension, glibc includes the "I" flag for decimal |
| formats, to output using the locale's digits (e.g. in Arabic). |
| In GCC, we require this to be in the standard place for flags, though |
| glibc allows it also after width or precision. |
| */ |
| printf ("%Id%Ii%Iu", i, i, u); |
| printf ("%Io", u); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%Ix", u); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%IX", u); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%In", n); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%If", d); |
| printf ("%IF", d); |
| printf ("%Ie", d); |
| printf ("%IE", d); |
| printf ("%Ig", d); |
| printf ("%IG", d); |
| printf ("%Ia", d); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%IA", d); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%Ic", i); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%Is", s); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%Ip", p); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%IC", lc); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%IS", ls); /* { dg-warning "flag" "bad use of I flag" } */ |
| printf ("%Im"); /* { dg-warning "flag" "bad use of I flag" } */ |
| |
| /* As an extension, GCC does format checking on "unlocked" |
| i.e. thread unsafe versions of these functions. */ |
| fprintf_unlocked (stdout, "%d", i); |
| fprintf_unlocked (stdout, "%ld", i); /* { dg-warning "format" "fprintf_unlocked" } */ |
| printf_unlocked ("%d", i); |
| printf_unlocked ("%ld", i); /* { dg-warning "format" "printf_unlocked" } */ |
| } |