diff options
Diffstat (limited to 'tests/tsprintf.c')
| -rw-r--r-- | tests/tsprintf.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/tests/tsprintf.c b/tests/tsprintf.c index 63a1dc670..62aab747a 100644 --- a/tests/tsprintf.c +++ b/tests/tsprintf.c @@ -30,6 +30,7 @@ http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., #include <stdarg.h> #include <float.h> +#include <errno.h> #ifdef HAVE_LOCALE_H #include <locale.h> @@ -1452,6 +1453,56 @@ percent_n (void) exit (1); } +struct clo +{ + char *fmt; + int r, e; +}; + +static void +check_length_overflow (void) +{ + mpfr_t x; + int i, r, e; + struct clo t[] = { + { "%Rg", 1, 0 }, + { "%5Rg", 5, 0 }, +#if INT_MAX == 2147483647 + { "%2147483647Rg", 2147483647, 0 }, + { "%2147483648Rg", -1, 1 }, + { "%18446744073709551616Rg", -1, 1 }, +#endif + }; + + mpfr_init2 (x, MPFR_PREC_MIN); + mpfr_set_ui (x, 0, MPFR_RNDN); + + for (i = 0; i < numberof (t); i++) + { + errno = 0; + r = mpfr_snprintf (NULL, 0, t[i].fmt, x); + e = errno; + if ((t[i].r < 0 ? r >= 0 : r != t[i].r) +#ifdef EOVERFLOW + || (t[i].e && e != EOVERFLOW) +#endif + ) + { + printf ("Error in check_length_overflow for i=%d (%s)\n", + i, t[i].fmt); + printf ("Expected r=%d, got r=%d\n", t[i].r, r); +#ifdef EOVERFLOW + if (t[i].e && e != EOVERFLOW) + printf ("Expected errno=EOVERFLOW=%d, got errno=%d\n", + EOVERFLOW, e); +#endif + exit (1); + } + } + + mpfr_clear (x); +} + #if defined(HAVE_LOCALE_H) && defined(HAVE_SETLOCALE) /* The following tests should be equivalent to those from test_locale() @@ -1602,6 +1653,7 @@ main (int argc, char **argv) snprintf_size (); percent_n (); mixed (); + check_length_overflow (); test_locale (); if (getenv ("MPFR_CHECK_LIBC_PRINTF")) |