| /* Test for scanf formats. Formats using C90 features, including cases |
| where C90 specifies some aspect of the format to be ignored or where |
| the behavior is undefined. |
| */ |
| /* Origin: Joseph Myers <jsm28@cam.ac.uk> */ |
| /* { dg-do compile } */ |
| /* { dg-options "-std=iso9899:1990 -pedantic -Wformat" } */ |
| |
| #include "format.h" |
| |
| void |
| foo (int *ip, unsigned int *uip, short int *hp, unsigned short int *uhp, |
| long int *lp, unsigned long int *ulp, float *fp, double *dp, |
| long double *ldp, char *s, signed char *ss, unsigned char *us, |
| void **pp, int *n, llong *llp, ullong *ullp, wchar_t *ls, |
| const int *cip, const int *cn, const char *cs, const void **ppc, |
| void *const *pcp, short int *hn, long int *ln, void *p, char **sp, |
| volatile void *ppv) |
| { |
| /* See ISO/IEC 9899:1990 (E) subclause 7.9.6.2 (pages 134-138). */ |
| /* Basic sanity checks for the different components of a format. */ |
| scanf ("%d", ip); |
| scanf ("%*d"); |
| scanf ("%3d", ip); |
| scanf ("%hd", hp); |
| scanf ("%3ld", lp); |
| scanf ("%*3d"); |
| scanf ("%d %ld", ip, lp); |
| /* Valid and invalid %% constructions. */ |
| scanf ("%%"); |
| scanf ("%*%"); /* { dg-warning "format" "bogus %%" } */ |
| scanf ("%*%\n"); /* { dg-warning "format" "bogus %%" } */ |
| scanf ("%4%"); /* { dg-warning "format" "bogus %%" } */ |
| scanf ("%4%\n"); /* { dg-warning "format" "bogus %%" } */ |
| scanf ("%h%"); /* { dg-warning "format" "bogus %%" } */ |
| scanf ("%h%\n"); /* { dg-warning "format" "bogus %%" } */ |
| /* Valid, invalid and silly assignment-suppression constructions. */ |
| scanf ("%*d%*i%*o%*u%*x%*X%*e%*E%*f%*g%*G%*s%*[abc]%*c%*p"); |
| scanf ("%*2d%*8s%*3c"); |
| scanf ("%*n", n); /* { dg-warning "suppress" "suppression of %n" } */ |
| scanf ("%*hd"); /* { dg-warning "together" "suppression with length" } */ |
| /* Valid, invalid and silly width constructions. */ |
| scanf ("%2d%3i%4o%5u%6x%7X%8e%9E%10f%11g%12G%13s%14[abc]%15c%16p", |
| ip, ip, uip, uip, uip, uip, fp, fp, fp, fp, fp, s, s, s, pp); |
| scanf ("%0d", ip); /* { dg-warning "width" "warning for zero width" } */ |
| scanf ("%3n", n); /* { dg-warning "width" "width with %n" } */ |
| /* Valid and invalid %h, %l, %L constructions. */ |
| scanf ("%hd%hi%ho%hu%hx%hX%hn", hp, hp, uhp, uhp, uhp, uhp, hn); |
| scanf ("%he", fp); /* { dg-warning "length" "bad use of %h" } */ |
| scanf ("%hE", fp); /* { dg-warning "length" "bad use of %h" } */ |
| scanf ("%hf", fp); /* { dg-warning "length" "bad use of %h" } */ |
| scanf ("%hg", fp); /* { dg-warning "length" "bad use of %h" } */ |
| scanf ("%hG", fp); /* { dg-warning "length" "bad use of %h" } */ |
| scanf ("%hs", s); /* { dg-warning "length" "bad use of %h" } */ |
| scanf ("%h[ac]", s); /* { dg-warning "length" "bad use of %h" } */ |
| scanf ("%hc", s); /* { dg-warning "length" "bad use of %h" } */ |
| scanf ("%hp", pp); /* { dg-warning "length" "bad use of %h" } */ |
| scanf ("%h"); /* { dg-warning "conversion lacks type" "bare %h" } */ |
| scanf ("%h."); /* { dg-warning "conversion" "bogus %h" } */ |
| scanf ("%ld%li%lo%lu%lx%lX%ln", lp, lp, ulp, ulp, ulp, ulp, ln); |
| scanf ("%le%lE%lf%lg%lG", dp, dp, dp, dp, dp); |
| scanf ("%lp", pp); /* { dg-warning "length" "bad use of %l" } */ |
| /* These next three formats were added in C94. */ |
| scanf ("%ls", ls); /* { dg-warning "length|C" "bad use of %l" } */ |
| scanf ("%l[ac]", ls); /* { dg-warning "length|C" "bad use of %l" } */ |
| scanf ("%lc", ls); /* { dg-warning "length|C" "bad use of %l" } */ |
| scanf ("%Le%LE%Lf%Lg%LG", ldp, ldp, ldp, ldp, ldp); |
| scanf ("%Ld", llp); /* { dg-warning "does not support" "bad use of %L" } */ |
| scanf ("%Li", llp); /* { dg-warning "does not support" "bad use of %L" } */ |
| scanf ("%Lo", ullp); /* { dg-warning "does not support" "bad use of %L" } */ |
| scanf ("%Lu", ullp); /* { dg-warning "does not support" "bad use of %L" } */ |
| scanf ("%Lx", ullp); /* { dg-warning "does not support" "bad use of %L" } */ |
| scanf ("%LX", ullp); /* { dg-warning "does not support" "bad use of %L" } */ |
| scanf ("%Ls", s); /* { dg-warning "length" "bad use of %L" } */ |
| scanf ("%L[ac]", s); /* { dg-warning "length" "bad use of %L" } */ |
| scanf ("%Lc", s); /* { dg-warning "length" "bad use of %L" } */ |
| scanf ("%Lp", pp); /* { dg-warning "length" "bad use of %L" } */ |
| scanf ("%Ln", n); /* { dg-warning "length" "bad use of %L" } */ |
| /* Valid uses of each bare conversion. */ |
| scanf ("%d%i%o%u%x%X%e%E%f%g%G%s%[abc]%c%p%n%%", ip, ip, uip, uip, uip, |
| uip, fp, fp, fp, fp, fp, s, s, s, pp, n); |
| /* Allow other character pointers with %s, %c, %[]. */ |
| scanf ("%2s%3s%4c%5c%6[abc]%7[abc]", ss, us, ss, us, ss, us); |
| /* Further tests for %[]. */ |
| scanf ("%[%d]%d", s, ip); |
| scanf ("%[^%d]%d", s, ip); |
| scanf ("%[]%d]%d", s, ip); |
| scanf ("%[^]%d]%d", s, ip); |
| scanf ("%[%d]%d", s, ip); |
| scanf ("%[]abcd", s); /* { dg-warning "no closing" "incomplete scanset" } */ |
| /* Various tests of bad argument types. Some of these are only pedantic |
| warnings. |
| */ |
| scanf ("%d", lp); /* { dg-warning "format" "bad argument types" } */ |
| scanf ("%d", uip); /* { dg-warning "format" "bad argument types" } */ |
| scanf ("%d", pp); /* { dg-warning "format" "bad argument types" } */ |
| scanf ("%p", ppc); /* { dg-warning "format" "bad argument types" } */ |
| scanf ("%p", ppv); /* { dg-warning "format" "bad argument types" } */ |
| scanf ("%s", n); /* { dg-warning "format" "bad argument types" } */ |
| scanf ("%s", p); /* { dg-warning "format" "bad argument types" } */ |
| scanf ("%p", p); /* { dg-warning "format" "bad argument types" } */ |
| scanf ("%p", sp); /* { dg-warning "format" "bad argument types" } */ |
| /* Tests for writing into constant values. */ |
| scanf ("%d", cip); /* { dg-warning "constant" "%d writing into const" } */ |
| scanf ("%n", cn); /* { dg-warning "constant" "%n writing into const" } */ |
| scanf ("%s", cs); /* { dg-warning "constant" "%s writing into const" } */ |
| scanf ("%p", pcp); /* { dg-warning "constant" "%p writing into const" } */ |
| /* Wrong number of arguments. */ |
| scanf ("%d%d", ip); /* { dg-warning "arguments" "wrong number of args" } */ |
| scanf ("%d", ip, ip); /* { dg-warning "arguments" "wrong number of args" } */ |
| /* Miscellaneous bogus constructions. */ |
| scanf (""); /* { dg-warning "zero-length" "warning for empty format" } */ |
| scanf ("\0"); /* { dg-warning "embedded" "warning for embedded NUL" } */ |
| scanf ("%d\0", ip); /* { dg-warning "embedded" "warning for embedded NUL" } */ |
| scanf ("%d\0%d", ip, ip); /* { dg-warning "embedded|too many" "warning for embedded NUL" } */ |
| /* APPLE LOCAL 6821124 string arg is not non-null */ |
| /* removed line */ |
| scanf ("%"); /* { dg-warning "trailing" "trailing % warning" } */ |
| scanf ("%d", (int *)0); /* { dg-warning "null" "writing into NULL" } */ |
| } |