[PATCH 28/36] Move exception_none to common code, and use it

[Pedro Alves <palves at redhat dot com>]

gdb/ChangeLog:
2015-02-09  Pedro Alves  <palves@redhat.com>

	* common/common-exceptions.h (exception_none): Declare.
	* common/common-exceptions.c (exception_none): Moved from
	exceptions.c.
	(exceptions_state_mc_init): Use exception_none.
	* exceptions.c (exception_none): Move to
	common/common-exceptions.c.
	* exceptions.h (exception_none): Move to
	common/common-exceptions.h.
---
 gdb/common/common-exceptions.c | 6 +++---
 gdb/common/common-exceptions.h | 3 +++
 gdb/exceptions.c               | 2 --
 gdb/exceptions.h               | 3 ---
 4 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/gdb/common/common-exceptions.c b/gdb/common/common-exceptions.c
index 4308b91..b65f259 100644
--- a/gdb/common/common-exceptions.c
+++ b/gdb/common/common-exceptions.c
@@ -20,6 +20,8 @@
 #include "common-defs.h"
 #include "common-exceptions.h"
 
+const struct gdb_exception exception_none = { 0, GDB_NO_ERROR, NULL };
+
 /* Possible catcher states.  */
 enum catcher_state {
   /* Initial state, a new catcher has just been created.  */
@@ -78,9 +80,7 @@ exceptions_state_mc_init (volatile struct gdb_exception *exception,
   struct catcher *new_catcher = XCNEW (struct catcher);
 
   /* Start with no exception, save it's address.  */
-  exception->reason = 0;
-  exception->error = GDB_NO_ERROR;
-  exception->message = NULL;
+  *exception = exception_none;
   new_catcher->exception = exception;
 
   new_catcher->mask = mask;
diff --git a/gdb/common/common-exceptions.h b/gdb/common/common-exceptions.h
index e349ed0..a32e6f9 100644
--- a/gdb/common/common-exceptions.h
+++ b/gdb/common/common-exceptions.h
@@ -188,4 +188,7 @@ extern void throw_error (enum errors error, const char *fmt, ...)
 extern void throw_quit (const char *fmt, ...)
      ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 2);
 
+/* A pre-defined non-exception.  */
+extern const struct gdb_exception exception_none;
+
 #endif /* COMMON_EXCEPTIONS_H */
diff --git a/gdb/exceptions.c b/gdb/exceptions.c
index 91ca7d5..0ca4c56 100644
--- a/gdb/exceptions.c
+++ b/gdb/exceptions.c
@@ -27,8 +27,6 @@
 #include "serial.h"
 #include "gdbthread.h"
 
-const struct gdb_exception exception_none = { 0, GDB_NO_ERROR, NULL };
-
 void
 prepare_to_throw_exception (void)
 {
diff --git a/gdb/exceptions.h b/gdb/exceptions.h
index 9718573..3b0dbac 100644
--- a/gdb/exceptions.h
+++ b/gdb/exceptions.h
@@ -22,9 +22,6 @@
 
 #include "ui-out.h"
 
-/* A pre-defined non-exception.  */
-extern const struct gdb_exception exception_none;
-
 /* If E is an exception, print it's error message on the specified
    stream.  For _fprintf, prefix the message with PREFIX...  */
 extern void exception_print (struct ui_file *file, struct gdb_exception e);
-- 
1.9.3