diff --git a/src/ca/cadef.h b/src/ca/cadef.h
index 8d92b6263..d5e646b8c 100644
--- a/src/ca/cadef.h
+++ b/src/ca/cadef.h
@@ -258,6 +258,8 @@ struct	exception_handler_args{
 	long			stat;	/* Channel access std status code 		*/
 	long			op;	/* External codes for channel access operations	*/
 	char			*ctx;	/* A character string containing context info	*/
+	char			*pFile; /* source file name (may be NULL) */
+	unsigned		lineNo; /* source file line number */
 };
 
 
@@ -984,6 +986,11 @@ int epicsShareAPI ca_v42_ok(chid chan);
 int epicsShareAPI ca_v42_ok();
 #endif /*CAC_FUNC_PROTO*/
 
+/*
+ * function that returns the CA version string
+ */
+READONLY char * epicsShareAPI ca_version();
+
 /*
  * ca_replace_printf_handler ()
  *
diff --git a/src/include/cadef.h b/src/include/cadef.h
index 8d92b6263..d5e646b8c 100644
--- a/src/include/cadef.h
+++ b/src/include/cadef.h
@@ -258,6 +258,8 @@ struct	exception_handler_args{
 	long			stat;	/* Channel access std status code 		*/
 	long			op;	/* External codes for channel access operations	*/
 	char			*ctx;	/* A character string containing context info	*/
+	char			*pFile; /* source file name (may be NULL) */
+	unsigned		lineNo; /* source file line number */
 };
 
 
@@ -984,6 +986,11 @@ int epicsShareAPI ca_v42_ok(chid chan);
 int epicsShareAPI ca_v42_ok();
 #endif /*CAC_FUNC_PROTO*/
 
+/*
+ * function that returns the CA version string
+ */
+READONLY char * epicsShareAPI ca_version();
+
 /*
  * ca_replace_printf_handler ()
  *