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From: Felix Willgerodt <fwillger@sourceware.org>
To: gdb-cvs@sourceware.org
Subject: [binutils-gdb] gdb,
 btrace: Throw an error for empty recordings when replaying starts.
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https://sourceware.org/git/gitweb.cgi?p=3Dbinutils-gdb.git;h=3D49a73ab9d345=
e1cd412a93b34a0b8c166603d80e

commit 49a73ab9d345e1cd412a93b34a0b8c166603d80e
Author: Felix Willgerodt <felix.willgerodt@intel.com>
Date:   Mon May 9 10:12:39 2022 +0200

    gdb, btrace: Throw an error for empty recordings when replaying starts.
   =20
    This makes record_btrace_start_replaying() more consistent, as it alrea=
dy
    errors out e.g. on a recording with only gaps.

Diff:
---
 gdb/record-btrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c
index 373d82b8b99..3f8a69dd04f 100644
--- a/gdb/record-btrace.c
+++ b/gdb/record-btrace.c
@@ -2017,7 +2017,7 @@ record_btrace_start_replaying (struct thread_info *tp)
=20
   /* We can't start replaying without trace.  */
   if (btinfo->functions.empty ())
-    return NULL;
+    error (_("No trace."));
=20
   /* GDB stores the current frame_id when stepping in order to detects ste=
ps
      into subroutines.