File ctype-tls-IE.patch of Package glibc
From 8dbaecbe92ac7ab73b7d0aae84626af59131e41b Mon Sep 17 00:00:00 2001
From: Jens Remus <jremus@linux.ibm.com>
Date: Fri, 25 Jul 2025 15:40:03 +0200
Subject: [PATCH] Use TLS initial-exec model for __libc_tsd_CTYPE_* thread
variables [BZ #33234]
Commit 10a66a8e421b ("Remove <libc-tsd.h>") removed the TLS initial-exec
(IE) model attribute from the __libc_tsd_CTYPE_* thread variable declarations
and definitions. Commit a894f04d8776 ("Optimize __libc_tsd_* thread
variable access") restored it on declarations.
Restore the TLS initial-exec model attribute on __libc_tsd_CTYPE_* thread
variable definitions.
This resolves test tst-locale1 failure on s390 32-bit, when using a
GNU linker without the fix from GNU binutils commit aefebe82dc89
("IBM zSystems: Fix offset relative to static TLS").
Reviewed-by: Florian Weimer <fweimer@redhat.com>
(cherry picked from commit e5363e6f460c2d58809bf10fc96d70fd1ef8b5b2)
---
NEWS | 1 +
ctype/ctype-info.c | 6 +++---
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/ctype/ctype-info.c b/ctype/ctype-info.c
index b7d3422726..fb5acf9419 100644
--- a/ctype/ctype-info.c
+++ b/ctype/ctype-info.c
@@ -24,11 +24,11 @@
__ctype_init before user code runs, but this does not happen for
threads in secondary namespaces. With the initializers, secondary
namespaces at least get locale data from the C locale. */
-__thread const uint16_t * __libc_tsd_CTYPE_B
+__thread const uint16_t * __libc_tsd_CTYPE_B attribute_tls_model_ie
= (const uint16_t *) _nl_C_LC_CTYPE_class + 128;
-__thread const int32_t * __libc_tsd_CTYPE_TOLOWER
+__thread const int32_t * __libc_tsd_CTYPE_TOLOWER attribute_tls_model_ie
= (const int32_t *) _nl_C_LC_CTYPE_tolower + 128;
-__thread const int32_t * __libc_tsd_CTYPE_TOUPPER
+__thread const int32_t * __libc_tsd_CTYPE_TOUPPER attribute_tls_model_ie
= (const int32_t *) _nl_C_LC_CTYPE_toupper + 128;
--
2.51.0