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| author | Nathan Froyd <froydnj@codesourcery.com> | 2007-03-13 14:05:25 +0000 |
|---|---|---|
| committer | Nathan Froyd <froydnj@codesourcery.com> | 2007-03-13 14:05:25 +0000 |
| commit | 348473d521cdd873312796f2753862d118c1ac99 (patch) | |
| tree | cd994812bb66793f1f0d4bd6b20741f86e2161c2 /gdb/frame.c | |
| parent | a2f9cf0ddf3113a84439d2f3398f6c3fa400b433 (diff) | |
| download | gdb-348473d521cdd873312796f2753862d118c1ac99.zip gdb-348473d521cdd873312796f2753862d118c1ac99.tar.gz gdb-348473d521cdd873312796f2753862d118c1ac99.tar.bz2 | |
* frame.c (frame_pop): Check to see whether there's a frame to
which we can pop first.
Diffstat (limited to 'gdb/frame.c')
| -rw-r--r-- | gdb/frame.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/gdb/frame.c b/gdb/frame.c index a40bbb2..8a14b29 100644 --- a/gdb/frame.c +++ b/gdb/frame.c @@ -514,13 +514,22 @@ frame_save_as_regcache (struct frame_info *this_frame) void frame_pop (struct frame_info *this_frame) { + struct frame_info *prev_frame; + struct regcache *scratch; + struct cleanup *cleanups; + + /* Ensure that we have a frame to pop to. */ + prev_frame = get_prev_frame_1 (this_frame); + + if (!prev_frame) + error (_("Cannot pop the initial frame.")); + /* Make a copy of all the register values unwound from this frame. Save them in a scratch buffer so that there isn't a race between trying to extract the old values from the current_regcache while at the same time writing new values into that same cache. */ - struct regcache *scratch - = frame_save_as_regcache (get_prev_frame_1 (this_frame)); - struct cleanup *cleanups = make_cleanup_regcache_xfree (scratch); + scratch = frame_save_as_regcache (prev_frame); + cleanups = make_cleanup_regcache_xfree (scratch); /* FIXME: cagney/2003-03-16: It should be possible to tell the target's register cache that it is about to be hit with a burst |