diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/format/bitfld-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/format/bitfld-1.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/format/bitfld-1.c b/gcc/testsuite/gcc.dg/format/bitfld-1.c new file mode 100644 index 000000000..e828ad97c --- /dev/null +++ b/gcc/testsuite/gcc.dg/format/bitfld-1.c @@ -0,0 +1,51 @@ +/* Test for printf formats and bit-fields: bug 22421. */ +/* Origin: Joseph Myers <joseph@codesourcery.com> */ +/* { dg-do compile } */ +/* { dg-options "-std=gnu99 -Wformat" } */ +/* { dg-require-effective-target int32plus } */ + +#include "format.h" + +struct s { + unsigned int u1 : 1; + signed int s1 : 1; + unsigned int u15 : 15; + signed int s15 : 15; + unsigned int u16 : 16; + signed int s16 : 16; + unsigned long u31 : 31; + signed long s31 : 31; + unsigned long u32 : 32; + signed long s32 : 32; + unsigned long long u48 : 48; +} x; + +void +foo (void) +{ + printf ("%d%u", x.u1, x.u1); + printf ("%d%u", x.s1, x.s1); + printf ("%d%u", x.u15, x.u15); + printf ("%d%u", x.s15, x.s15); + printf ("%d%u", x.u16, x.u16); + printf ("%d%u", x.s16, x.s16); +#if __INT_MAX__ > 32767 + /* If integers are 16 bits, there doesn't seem to be a way of + printing these without getting an error. */ + printf ("%d%u", x.u31, x.u31); + printf ("%d%u", x.s31, x.s31); +#endif +#if __LONG_MAX__ > 2147483647 && __INT_MAX__ >= 2147483647 + /* If long is wider than 32 bits, the 32-bit bit-fields are int or + unsigned int or promote to those types. Otherwise, long is 32 + bits and the bit-fields are of type plain long or unsigned + long. */ + printf ("%d%u", x.u32, x.u32); + printf ("%d%u", x.s32, x.s32); +#else + printf ("%ld%lu", x.u32, x.u32); + printf ("%ld%lu", x.s32, x.s32); +#endif + printf ("%llu", x.u48); /* { dg-warning "has type '.*unsigned int:48'" } */ + printf ("%llu", (unsigned long long)x.u48); +} |