On 11/22/25 7:32 AM, Frank Scheiner wrote:
The toolchain autobuilds for ia64 failed ([1]) yesterday with:
```
libtool: compile:
/usr/src/t2-src/src.gcc.ia64-toolchain.251121.040147.278918/gcc-16-20251116/objs/gcc/xgcc-wrapper
/usr/src/t2-src/src.gcc.ia64-toolchain.251121.040147.278918/gcc-16-20251116/objs/./gcc/xgcc
-B/usr/src/t2-src/src.gcc.ia64-toolchain.251121.040147.278918/gcc-16-20251116/objs/./gcc/
-B/usr/src/t2-src/build/ia64-toolchain-24-svn-generic-ia64-itanium2-cross-linux/TOOLCHAIN/cross/usr/ia64-t2-linux-gnu/bin/
-B/usr/src/t2-src/build/ia64-toolchain-24-svn-generic-ia64-itanium2-cross-linux/TOOLCHAIN/cross/usr/ia64-t2-linux-gnu/lib/
-isystem
/usr/src/t2-src/build/ia64-toolchain-24-svn-generic-ia64-itanium2-cross-linux/TOOLCHAIN/cross/usr/ia64-t2-linux-gnu/include
-isystem
/usr/src/t2-src/build/ia64-toolchain-24-svn-generic-ia64-itanium2-cross-linux/TOOLCHAIN/cross/usr/ia64-t2-linux-gnu/sys-include
--sysroot=/usr/src/t2-src/build/ia64-toolchain-24-svn-generic-ia64-itanium2-cross-linux
-DHAVE_CONFIG_H -I. -I../../../libgomp -I../../../libgomp/config/linux/ia64
-I../../../libgomp/config/linux -I../../../libgomp/config/posix -I../../../libgomp
-I../../../libgomp/../include -Wall -Werror -ftls-model=initial-exec -pthread
-DUSING_INITIAL_EXEC_TLS -g -O2 -MT oacc-cuda.lo -MD -MP -MF .deps/oacc-cuda.Tpo -c
../../../libgomp/oacc-cuda.c -o oacc-cuda.o >/dev/null 2>&1
../../../libgomp/affinity-fmt.c: In function 'gomp_display_affinity':
../../../libgomp/affinity-fmt.c:330:25: error: initialization discards 'const'
qualifier from pointer target type [-Werror=discarded-qualifiers]
330 | char *q = strchr (p + 1, '}');
| ^~~~~~
```
[1]:
https://github.com/johnny-mnemonic/toolchain-autobuilds/actions/runs/19559235881
This is not ia64-specific but due to the changes in the recent glibc
commit "Implement C23 const-preserving standard library macros" (i.e.
[2]) now requiring "char *q" to be a pointer to a const char to compile
w/o error because of the return value of strchr() .
[2]:
https://sourceware.org/git/?p=glibc.git;a=commit;h=cd748a63ab1a7ae846175c532a3daab341c62690
Also see the related discussion at [3] for details.
[3]: https://sourceware.org/pipermail/libc-alpha/2025-November/172809.html
The GCC build is fixed by the attached patch, see [4] for a successful
build with the then latest snapshots of binutils, glibc and GCC.
[4]:
https://github.com/johnny-mnemonic/toolchain-autobuilds/actions/runs/19585045571
Idea from Tomas, attached patch from me.
Thanks. I ran this through the usual bootstrap and regression tests
with no issues and pushed it to the trunk.
jeff
