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[glibc(refs/for/master%wip)] nios2: Work around backend bug triggered by csu/libc-tls.c (GCC PR 92499)


https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=277b390b1c911e646b9f66caed7312e2e9ba1b08

commit 277b390b1c911e646b9f66caed7312e2e9ba1b08
Author: Florian Weimer <fweimer@redhat.com>
Date:   Wed Nov 13 12:00:38 2019 +0100

    nios2: Work around backend bug triggered by csu/libc-tls.c (GCC PR 92499)

Diff:
---
 sysdeps/unix/sysv/linux/nios2/Makefile | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/sysdeps/unix/sysv/linux/nios2/Makefile b/sysdeps/unix/sysv/linux/nios2/Makefile
index 5688a16..9342e45 100644
--- a/sysdeps/unix/sysv/linux/nios2/Makefile
+++ b/sysdeps/unix/sysv/linux/nios2/Makefile
@@ -7,3 +7,12 @@ ifeq ($(subdir),misc)
 sysdep_headers += sys/cachectl.h
 sysdep_routines += cacheflush
 endif
+
+ifeq ($(subdir),csu)
+# Work around an incorrect assumption that an object of variably
+# modified type, with a small fixed size but a large variable-sized
+# part (the static_slotinfo variable in libc-tls.c) is allocated in
+# the small data section, not the data section where it belongs based
+# on its size.  See GCC PR 92499.
+CFLAGS-libc-tls.c += -mgpopt=none
+endif


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