errorlog: Check errorfile exists (#6028)

Fixes #6027

2 files changed, 4 insertions, 0 deletions

diff --git a/release-notes/bugfixes/99-errorlog b/release-notes/bugfixes/99-errorlog
new file mode 100644
index 00000000..c647e53e
--- /dev/null
+++ b/release-notes/bugfixes/99-errorlog
@@ -0,0 +1 @@
+fix error log related crash
diff --git a/src/log.c b/src/log.c
index 812eb5b5..c1aa876d 100644
--- a/src/log.c
+++ b/src/log.c
@@ -330,6 +330,9 @@ void errorlog(char *fmt, ...) {
     va_end(args);
 
     /* also log to the error logfile, if opened */
+    if (!errorfile) {
+        return;
+    }
     va_start(args, fmt);
     vfprintf(errorfile, fmt, args);
     fflush(errorfile);