[Bug libc/29703] New: gettimeofda: compile error with gcc 12.2.0 (glibc 2.36)

["felix-glibc at fefe dot de" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=29703

            Bug ID: 29703
           Summary: gettimeofda: compile error with gcc 12.2.0 (glibc
                    2.36)
           Product: glibc
           Version: 2.36
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: felix-glibc at fefe dot de
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

I'm trying to build glibc 2.36 with gcc 12.2.0 on x86_64-linux. Here's what
happens:

make[2]: Entering directory '/tmp/glibc-2.36/time'
gcc ../sysdeps/unix/sysv/linux/x86/gettimeofday.c -c -std=gnu11 -fgnu89-inline 
-pipe -O2 -Wall -Wwrite-strings -Wundef -Werror -fmerge-all-constants
-frounding-math -fstack-protector -fno-common -Wstrict-prototypes
-Wold-style-definition -fmath-errno    -fPIC -fcf-protection  
-ftls-model=initial-exec      -I../include -I/tmp/glibc-2.36/build/time 
-I/tmp/glibc-2.36/build  -I../sysdeps/unix/sysv/linux/x86_64/64 
-I../sysdeps/unix/sysv/linux/x86_64  -I../sysdeps/unix/sysv/linux/x86/include
-I../sysdeps/unix/sysv/linux/x86  -I../sysdeps/x86/nptl 
-I../sysdeps/unix/sysv/linux/wordsize-64  -I../sysdeps/x86_64/nptl 
-I../sysdeps/unix/sysv/linux/include -I../sysdeps/unix/sysv/linux 
-I../sysdeps/nptl  -I../sysdeps/pthread  -I../sysdeps/gnu 
-I../sysdeps/unix/inet  -I../sysdeps/unix/sysv  -I../sysdeps/unix/x86_64 
-I../sysdeps/unix  -I../sysdeps/posix  -I../sysdeps/x86_64/64 
-I../sysdeps/x86_64/fpu  -I../sysdeps/x86/fpu  -I../sysdeps/x86_64 
-I../sysdeps/x86/include -I../sysdeps/x86  -I../sysdeps/ieee754/float128 
-I../sysdeps/ieee754/ldbl-96/include -I../sysdeps/ieee754/ldbl-96 
-I../sysdeps/ieee754/dbl-64  -I../sysdeps/ieee754/flt-32 
-I../sysdeps/wordsize-64  -I../sysdeps/ieee754  -I../sysdeps/generic  -I..
-I../libio -I.  -D_LIBC_REENTRANT -include /tmp/glibc-2.36/build/libc-modules.h
-DMODULE_NAME=libc -include ../include/libc-symbols.h  -DPIC -DSHARED    
-DTOP_NAMESPACE=glibc -o /tmp/glibc-2.36/build/time/gettimeofday.os -MD -MP -MF
/tmp/glibc-2.36/build/time/gettimeofday.os.dt -MT
/tmp/glibc-2.36/build/time/gettimeofday.os
In file included from <command-line>:
../sysdeps/unix/sysv/linux/gettimeofday.c:56:29: error: ‘gettimeofday’ alias
between functions of incompatible types ‘int(struct timeval * restrict,  void *
restrict)’ and ‘int (*(void))(struct timeval *, void *)’
[-Werror=attribute-alias=]
   56 | weak_alias (__gettimeofday, gettimeofday)
      |                             ^~~~~~~~~~~~
./../include/libc-symbols.h:155:26: note: in definition of macro ‘_weak_alias’
  155 |   extern __typeof (name) aliasname __attribute__ ((weak, alias
(#name))) \
      |                          ^~~~~~~~~
../sysdeps/unix/sysv/linux/gettimeofday.c:56:1: note: in expansion of macro
‘weak_alias’
   56 | weak_alias (__gettimeofday, gettimeofday)
      | ^~~~~~~~~~
../sysdeps/unix/sysv/linux/gettimeofday.c:42:13: note: aliased declaration here
   42 | libc_ifunc (__gettimeofday,
      |             ^~~~~~~~~~~~~~
./../include/libc-symbols.h:737:25: note: in definition of macro
‘__ifunc_resolver’
  737 |   __typeof (type_name) *name##_ifunc (arg)                             
\
      |                         ^~~~
./../include/libc-symbols.h:853:32: note: in expansion of macro ‘__ifunc’
  853 | #define libc_ifunc(name, expr) __ifunc (name, name, expr, void,
INIT_ARCH)
      |                                ^~~~~~~
../sysdeps/unix/sysv/linux/gettimeofday.c:42:1: note: in expansion of macro
‘libc_ifunc’
   42 | libc_ifunc (__gettimeofday,
      | ^~~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [/tmp/glibc-2.36/build/sysd-rules:93:
/tmp/glibc-2.36/build/time/gettimeofday.os] Error 1
make[2]: Leaving directory '/tmp/glibc-2.36/time'
make[1]: *** [Makefile:484: time/subdir_lib] Error 2
make[1]: Leaving directory '/tmp/glibc-2.36'
make: *** [Makefile:9: all] Error 2

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