1 files changed, 9 insertions, 2 deletions

diff --git a/test/test.h b/test/test.h
index 415e093..d092244 100644
--- a/test/test.h
+++ b/test/test.h
@@ -25,12 +25,19 @@ bool issolvable(cube_t);
 bool issolved(cube_t);
 cube_t readcube(char *, char *);
 void writecube(char *, cube_t, char *);
-void nissy_setlogger(void (*logger_function)(const char *, va_list));
+void nissy_setlogger(void (*logger_function)(const char *, ...));
 
 /* Test function to be implemented by all tests */
 void run(void);
 
-void log_stderr(const char *str, va_list vl) { vfprintf(stderr, str, vl); }
+void log_stderr(const char *str, ...)
+{
+        va_list args;
+
+        va_start(args, str);
+        vfprintf(stderr, str, args);
+        va_end(args);
+}
 
 int main(void) {
         nissy_setlogger(log_stderr);