core: Only display the errno message if errno is set

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>

diff --git a/lib/igt_core.c b/lib/igt_core.c
index f683c3b..03c1f61 100644 (file)
--- a/lib/igt_core.c
+++ b/lib/igt_core.c
@@ -575,6 +575,10 @@ void __igt_skip_check(const char *file, const int line,
 {
        va_list args;
        int err = errno;
+       char *err_str = NULL;
+
+       if (err)
+               asprintf(&err_str, "Last errno: %i, %s\n", err, strerror(err));
 
        if (f) {
                static char *buf;
@@ -589,13 +593,13 @@ void __igt_skip_check(const char *file, const int line,
 
                igt_skip("Test requirement not met in function %s, file %s:%i:\n"
                         "Test requirement: (%s)\n%s"
-                        "Last errno: %i, %s\n",
-                        func, file, line, check, buf, err, strerror(err));
+                        "%s",
+                        func, file, line, check, buf, err_str ?: "");
        } else {
                igt_skip("Test requirement not met in function %s, file %s:%i:\n"
                         "Test requirement: (%s)\n"
-                        "Last errno: %i, %s\n",
-                        func, file, line, check, err, strerror(err));
+                        "%s",
+                        func, file, line, check, err_str ?: "");
        }
 }