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-Wlto-type-mismatch warning in error()
From: |
Sam James |
Subject: |
-Wlto-type-mismatch warning in error() |
Date: |
Wed, 7 Dec 2022 20:57:45 +0000 |
Hi,
Compiling texinfo 7.0.1 with CFLAGS="-O2 -flto -Werror=lto-type-mismatch"
results
in the following:
```
make[3]: Entering directory
'/var/tmp/portage/sys-apps/texinfo-7.0.1/work/texinfo-7.0.1/install-info'
x86_64-pc-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -I../gnulib/lib
-I../gnulib/lib -DLOCALEDIR=\"/usr/share/locale\" -O2 -flto
-Werror=lto-type-mismatch -O2 -flto -Werror=lto-type-mismatch -ggdb3
-Werror=implicit-function-declaration -Werror=implicit-int -c -o install-info.o
install-info.c
x86_64-pc-linux-gnu-gcc -O2 -flto -Werror=lto-type-mismatch -O2 -flto
-Werror=lto-type-mismatch -ggdb3 -Werror=implicit-function-declaration
-Werror=implicit-int -Wl,-O1 -Wl,--as-needed
-Wl,--defsym=__gentoo_check_ldflags__=0 -Wl,-z,pack-relative-relocs -o
ginstall-info install-info.o ../gnulib/lib/libgnu.a
../gnulib/lib/error.h:33:13: error: type of ‘error’ does not match original
declaration [-Werror=lto-type-mismatch]
33 | extern void error (int __status, int __errnum, const char *__format,
...)
| ^
install-info.c:218:1: note: type mismatch in parameter 1
218 | error (const char *fmt, ...)
| ^
install-info.c:218:1: note: ‘error’ was previously declared here
install-info.c:218:1: note: code may be misoptimized unless
‘-fno-strict-aliasing’ is used
lto1: some warnings being treated as errors
lto-wrapper: fatal error: //usr/bin/x86_64-pc-linux-gnu-gcc returned 1 exit
status
compilation terminated.
/usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status
make[3]: *** [Makefile:1514: ginstall-info] Error 1
```
This is with GCC 12.2.1 20221203.
We've also seen this in GNU make, so not sure if it's a
gnulib problem or not, as it may be in lib/error.h (hence CCing bug-gnulib):
- https://bugs.gentoo.org/863713 (texinfo)
- https://bugs.gentoo.org/863824 (make)
Best,
sam
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- -Wlto-type-mismatch warning in error(),
Sam James <=
- Re: -Wlto-type-mismatch warning in error(), Arsen Arsenović, 2022/12/07
- Re: -Wlto-type-mismatch warning in error(), Gavin Smith, 2022/12/07
- Re: -Wlto-type-mismatch warning in error(), Bruno Haible, 2022/12/07
- Re: -Wlto-type-mismatch warning in error(), Eli Zaretskii, 2022/12/08
- Re: -Wlto-type-mismatch warning in error(), Arsen Arsenović, 2022/12/08
- Re: -Wlto-type-mismatch warning in error(), Eli Zaretskii, 2022/12/08
- Re: namespacing issues with Gnulib, Bruno Haible, 2022/12/08
- Re: namespacing issues with Gnulib, Eli Zaretskii, 2022/12/08
- Re: namespacing issues with Gnulib, Arsen Arsenović, 2022/12/08
- Re: namespacing issues with Gnulib, Paul Eggert, 2022/12/08