[binutils-gdb] libctf: improve handling of type dumping errors

[Nick Alcock <nix@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0ebf1bdeeda1612dbe8e092dca765527a741e462

commit 0ebf1bdeeda1612dbe8e092dca765527a741e462
Author: Nick Alcock <nick.alcock@oracle.com>
Date:   Tue Apr 2 13:48:13 2024 +0100

    libctf: improve handling of type dumping errors
    
    When dumping a type fails with an error, we want to emit a warning noting
    this: a warning because it's not fatal and we can continue.  But warnings
    don't automatically print out the ctf_errno (because not all cases causing
    warnings set the errno at all), so we must do it at warning-emission time or
    lose track of what's gone wrong.
    
    libctf/
    
            * ctf-dump.c (ctf_dump_format_type): Dump the underlying error on
            type dump failure.

Diff:
---
 libctf/ctf-dump.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libctf/ctf-dump.c b/libctf/ctf-dump.c
index 2213d09dc29..80a3b265297 100644
--- a/libctf/ctf-dump.c
+++ b/libctf/ctf-dump.c
@@ -239,7 +239,8 @@ ctf_dump_format_type (ctf_dict_t *fp, ctf_id_t id, int flag)
  oom:
   ctf_set_errno (fp, errno);
  err:
-  ctf_err_warn (fp, 1, 0, _("cannot format name dumping type 0x%lx"), id);
+  ctf_err_warn (fp, 1, ctf_errno (fp), _("cannot format name dumping type 0x%lx"),
+		id);
   free (buf);
   free (str);
   free (bit);