Fix: cib: properly mark variable as volatile

Author: kgaillot

cib/cibio.h

@@ -43,6 +43,6 @@ extern xmlNode *readCibXmlFile(const char *dir, const char *file, gboolean disca
 extern int activateCibBuffer(char *buffer, const char *filename);
 extern int activateCibXml(xmlNode * doc, gboolean to_disk, const char *op);
 extern crm_trigger_t *cib_writer;
-extern gboolean cib_writes_enabled;
+extern volatile gboolean cib_writes_enabled;
 
 #endif

cib/main.c

@@ -75,7 +75,10 @@ GMainLoop *mainloop = NULL;
 const char *cib_root = NULL;
 char *cib_our_uname = NULL;
 gboolean preserve_status = FALSE;
-gboolean cib_writes_enabled = TRUE;
+
+/* volatile because it may be changed in a signal handler */
+volatile gboolean cib_writes_enabled = TRUE;
+
 int remote_fd = 0;
 int remote_tls_fd = 0;