use explicit returns to avoid checker confusion

The checker does not understand the idiom

if (except.reason < 0) {
   do_cleanups (whatever);
   GDB_PY_HANDLE_EXCEPTION (except);
}

because it doesn't realize that the nested 'if' actually has the same
condition.

This fixes instances of this to be more explicit.

	* python/py-breakpoint.c (bppy_get_commands): Use
	explicit, unconditional return.
	* python/py-frame.c (frapy_read_var): Likewise.
	* python/python.c (gdbpy_decode_line): Likewise.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 55df48c..666868f 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,12 @@
 2013-05-30  Tom Tromey  <tromey@redhat.com>
 
+       * python/py-breakpoint.c (bppy_get_commands): Use
+       explicit, unconditional return.
+       * python/py-frame.c (frapy_read_var): Likewise.
+       * python/python.c (gdbpy_decode_line): Likewise.
+
+2013-05-30  Tom Tromey  <tromey@redhat.com>
+
        * cp-namespace.c (cp_lookup_symbol_imports_or_template): Call
        do_cleanups on all return paths.
 

diff --git a/gdb/python/py-breakpoint.c b/gdb/python/py-breakpoint.c
index eaa1bc5..87f1fdc 100644 (file)
--- a/gdb/python/py-breakpoint.c
+++ b/gdb/python/py-breakpoint.c
@@ -492,7 +492,8 @@ bppy_get_commands (PyObject *self, void *closure)
   if (except.reason < 0)
     {
       do_cleanups (chain);
-      GDB_PY_HANDLE_EXCEPTION (except);
+      gdbpy_convert_exception (except);
+      return NULL;
     }
 
   cmdstr = ui_file_xstrdup (string_file, &length);

diff --git a/gdb/python/py-frame.c b/gdb/python/py-frame.c
index 2615ddf..f960b08 100644 (file)
--- a/gdb/python/py-frame.c
+++ b/gdb/python/py-frame.c
@@ -477,7 +477,8 @@ frapy_read_var (PyObject *self, PyObject *args)
       if (except.reason < 0)
        {
          do_cleanups (cleanup);
-         GDB_PY_HANDLE_EXCEPTION (except);
+         gdbpy_convert_exception (except);
+         return NULL;
        }
 
       if (!var)

diff --git a/gdb/python/python.c b/gdb/python/python.c
index 690534f..c94198e 100644 (file)
--- a/gdb/python/python.c
+++ b/gdb/python/python.c
@@ -653,7 +653,8 @@ gdbpy_decode_line (PyObject *self, PyObject *args)
     {
       do_cleanups (cleanups);
       /* We know this will always throw.  */
-      GDB_PY_HANDLE_EXCEPTION (except);
+      gdbpy_convert_exception (except);
+      return NULL;
     }
 
   if (sals.nelts)