diff options
Diffstat (limited to 'support/support_test_compare_failure.c')
| -rw-r--r-- | support/support_test_compare_failure.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/support/support_test_compare_failure.c b/support/support_test_compare_failure.c index ae73d200cd..dba79e413f 100644 --- a/support/support_test_compare_failure.c +++ b/support/support_test_compare_failure.c @@ -17,7 +17,9 @@ <https://www.gnu.org/licenses/>. */ #include <errno.h> +#include <limits.h> #include <stdio.h> +#include <string.h> #include <support/check.h> static void @@ -31,7 +33,14 @@ report (const char *which, const char *expr, long long value, int positive, printf ("%lld", value); unsigned long long mask = (~0ULL) >> (8 * (sizeof (unsigned long long) - size)); - printf (" (0x%llx); from: %s\n", (unsigned long long) value & mask, expr); + const char *errno_constant = NULL; + if (strcmp (expr, "errno") == 0 + && positive && (unsigned long long int) value <= INT_MAX) + errno_constant = strerrorname_np (value); + printf (" (0x%llx", (unsigned long long) value & mask); + if (errno_constant != NULL) + printf (", %s", errno_constant); + printf ("); from: %s\n", expr); } void |