[binutils-gdb] libctf: work around an uninitialized variable warning

[Nick Alcock]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=cce0bb8ff8a4922da4318a3654f68cfabb4c3ec8

commit cce0bb8ff8a4922da4318a3654f68cfabb4c3ec8
Author: Nick Alcock <nick.alcock@oracle.com>
Date:   Mon Mar 13 17:32:53 2023 +0000

    libctf: work around an uninitialized variable warning
    
    GCC 11+ complains that sym is uninitialized in ctf_symbol_next.  It
    isn't, but it's not quite smart enough to figure that out (it requires
    domain-specific knowledge of the state of the ctf_next_t iterator
    over multiple calls).
    
    libctf/
            * ctf-lookup.c (ctf_symbol_next): Initialize sym to a suitable
            value for returning if never reset during the function.

Diff:
---
 libctf/ctf-lookup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libctf/ctf-lookup.c b/libctf/ctf-lookup.c
index 10ababf1489..950c0a809ac 100644
--- a/libctf/ctf-lookup.c
+++ b/libctf/ctf-lookup.c
@@ -651,7 +651,7 @@ ctf_id_t
 ctf_symbol_next (ctf_dict_t *fp, ctf_next_t **it, const char **name,
 		 int functions)
 {
-  ctf_id_t sym;
+  ctf_id_t sym = CTF_ERR;
   ctf_next_t *i = *it;
   int err;