[binutils-gdb/gdb-17-branch] [gdbsupport] Fix get_print_cell use in threads

[Tom de Vries]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=59ffbefc0ee0152b0679cd5cea46397e8e74e5db

commit 59ffbefc0ee0152b0679cd5cea46397e8e74e5db
Author: Tom de Vries <tdevries@suse.de>
Date:   Sun Jan 11 10:32:49 2026 +0100

    [gdbsupport] Fix get_print_cell use in threads
    
    PR gdb/33753 reports problems with get_print_cell when used from threads.
    
    Fix this by making the two static variables in get_print_cell thread_local.
    
    Tested on x86_64-linux.
    
    Approved-By: Simon Marchi <simon.marchi@efficios.com>
    Approved-By: Tom Tromey <tom@tromey.com>
    
    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=33753
    (cherry picked from commit 8543102f51fa6edb5b2c63081378965adfc900ca)

Diff:
---
 gdbsupport/print-utils.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gdbsupport/print-utils.cc b/gdbsupport/print-utils.cc
index 8514720d963..145a8838e16 100644
--- a/gdbsupport/print-utils.cc
+++ b/gdbsupport/print-utils.cc
@@ -28,8 +28,8 @@
 char *
 get_print_cell (void)
 {
-  static char buf[NUMCELLS][PRINT_CELL_SIZE];
-  static int cell = 0;
+  static thread_local char buf[NUMCELLS][PRINT_CELL_SIZE];
+  static thread_local int cell = 0;
 
   if (++cell >= NUMCELLS)
     cell = 0;