[Bug nss/27832] New: makedb.c:797:7: error: 'writev' specified size 4294967295 exceeds maximum object size 2147483647

[Bug nss/27832] New: makedb.c:797:7: error: 'writev' specified size 4294967295 exceeds maximum object size 2147483647

[danglin at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27832

            Bug ID: 27832
           Summary: makedb.c:797:7: error: 'writev' specified size
                    4294967295 exceeds maximum object size 2147483647
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: nss
          Assignee: unassigned at sourceware dot org
          Reporter: danglin at gcc dot gnu.org
  Target Milestone: ---

gcc makedb.c -c -std=gnu11 -fgnu89-inline  -g -O2 -Wall -Wwrite-strings -Wundef
-Werror -fmerge-all-constants -frounding-math -fno-stack-protector
-Wstrict-prot
otypes -Wold-style-definition -fmath-errno            -I../include
-I/home/dave/
gnu/glibc/objdir/nss  -I/home/dave/gnu/glibc/objdir 
-I../sysdeps/unix/sysv/linu
x/hppa  -I../sysdeps/hppa/nptl  -I../sysdeps/unix/sysv/linux/include
-I../sysdep
s/unix/sysv/linux  -I../sysdeps/nptl  -I../sysdeps/pthread  -I../sysdeps/gnu 
-I
../sysdeps/unix/inet  -I../sysdeps/unix/sysv  -I../sysdeps/unix 
-I../sysdeps/po
six  -I../sysdeps/hppa/hppa1.1  -I../sysdeps/wordsize-32 
-I../sysdeps/ieee754/f
lt-32  -I../sysdeps/ieee754/dbl-64  -I../sysdeps/hppa/fpu  -I../sysdeps/hppa 
-I
../sysdeps/ieee754  -I../sysdeps/generic  -I.. -I../libio -I. -nostdinc
-isystem
 /usr/lib/gcc/hppa-linux-gnu/10/include -isystem /usr/include -D_LIBC_REENTRANT
-include /home/dave/gnu/glibc/objdir/libc-modules.h -DMODULE_NAME=nonlib
-includ
e ../include/libc-symbols.h       -DTOP_NAMESPACE=glibc -o
/home/dave/gnu/glibc/
objdir/nss/makedb.o -MD -MP -MF /home/dave/gnu/glibc/objdir/nss/makedb.o.dt -MT
/home/dave/gnu/glibc/objdir/nss/makedb.o
makedb.c: In function 'write_output':
makedb.c:797:7: error: 'writev' specified size 4294967295 exceeds maximum
object size 2147483647 [-Werror=stringop-overflow=]
  797 |   if (writev (fd, iov, iov_nelts) != keydataoffset)
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../include/sys/uio.h:2,
                 from makedb.c:39:
../misc/sys/uio.h:52:16: note: in a call to function 'writev' declared with
attribute 'read_only (2, 3)'
   52 | extern ssize_t writev (int __fd, const struct iovec *__iovec, int
__count)
      |                ^~~~~~
cc1: all warnings being treated as errors
make[2]: *** [../o-iterator.mk:9: /home/dave/gnu/glibc/objdir/nss/makedb.o]
Error 1
make[2]: Leaving directory '/home/dave/gnu/glibc/glibc/nss'

Build on 2021-05-05 was okay.

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[Bug nss/27832] makedb.c:797:7: error: 'writev' specified size 4294967295 exceeds maximum object size 2147483647

[schwab@linux-m68k.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27832

Andreas Schwab <schwab@linux-m68k.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unspecified                 |2.34
                 CC|                            |msebor at redhat dot com

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[Bug nss/27832] makedb.c:797:7: error: 'writev' specified size 4294967295 exceeds maximum object size 2147483647

[msebor at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27832

Martin Sebor <msebor at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
           Assignee|unassigned at sourceware dot org   |msebor at redhat dot com
         Resolution|---                         |FIXED

--- Comment #1 from Martin Sebor <msebor at redhat dot com> ---
Fixed in https://sourceware.org/pipermail/glibc-cvs/2021q2/073078.html.

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[Bug nss/27832] makedb.c:797:7: error: 'writev' specified size 4294967295 exceeds maximum object size 2147483647

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27832

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fweimer at redhat dot com
   Target Milestone|---                         |2.34

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[Bug nss/27832] makedb.c:797:7: error: 'writev' specified size 4294967295 exceeds maximum object size 2147483647

[msebor at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27832

Martin Sebor <msebor at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=100571

--- Comment #2 from Martin Sebor <msebor at redhat dot com> ---
The corresponding GCC 10 bug is:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100571

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