[gcc r15-1720] jit: Fix Darwin bootstrap after r15-1699.

[Iain D Sandoe]

https://gcc.gnu.org/g:45e74d5dfa4c5f372df0d3545bc342b6a2505e71

commit r15-1720-g45e74d5dfa4c5f372df0d3545bc342b6a2505e71
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Sat Jun 29 03:10:59 2024 +0100

    jit: Fix Darwin bootstrap after r15-1699.
    
    r15-1699-g445c62ee492 contains changes that trigger two maybe-uninitialized
    warnings on Darwin, which result in a bootstrap failure.
    
    Note that the warnings are false positives, in fact the variables should be
    initialized in the cases of a switch (all values of the switch condition are
    covered).
    
    Fixed here by providing default initializations for the relevant variables.
    
    gcc/jit/ChangeLog:
    
            * jit-recording.cc
            (recording::memento_of_typeinfo::make_debug_string): Default the value
            of ident.
            (recording::memento_of_typeinfo::write_reproducer): Default the value
            of type.
    
    Signed-off-by: Iain Sandoe <iains@gcc.gnu.org>

Diff:
---
 gcc/jit/jit-recording.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/jit/jit-recording.cc b/gcc/jit/jit-recording.cc
index f68d01fff55..43a6795f8f3 100644
--- a/gcc/jit/jit-recording.cc
+++ b/gcc/jit/jit-recording.cc
@@ -5516,7 +5516,7 @@ recording::memento_of_typeinfo::replay_into (replayer *r)
 recording::string *
 recording::memento_of_typeinfo::make_debug_string ()
 {
-  const char* ident;
+  const char* ident = "";
   switch (m_info_type)
   {
     case TYPE_INFO_ALIGN_OF:
@@ -5538,7 +5538,7 @@ recording::memento_of_typeinfo::make_debug_string ()
 void
 recording::memento_of_typeinfo::write_reproducer (reproducer &r)
 {
-  const char* type;
+  const char* type = "";
   switch (m_info_type)
   {
     case TYPE_INFO_ALIGN_OF: