diff options
| -rw-r--r-- | contrib/gdb/gdb/frame.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/contrib/gdb/gdb/frame.c b/contrib/gdb/gdb/frame.c index a032c47..3650b7c 100644 --- a/contrib/gdb/gdb/frame.c +++ b/contrib/gdb/gdb/frame.c @@ -1846,6 +1846,23 @@ get_prev_frame (struct frame_info *this_frame) return NULL; } + /* Assume that the only way to get a zero PC is through something + like a SIGSEGV or a dummy frame, and hence that NORMAL frames + will never unwind a zero PC. */ + if (this_frame->level > 0 + && get_frame_type (this_frame) == NORMAL_FRAME + && get_frame_type (get_next_frame (this_frame)) == NORMAL_FRAME + && get_frame_pc (this_frame) == 0) + { + if (frame_debug) + { + fprintf_unfiltered (gdb_stdlog, "-> "); + fprint_frame (gdb_stdlog, this_frame->prev); + fprintf_unfiltered (gdb_stdlog, " // zero PC \n"); + } + return NULL; + } + /* Only try to do the unwind once. */ if (this_frame->prev_p) { |
