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[Bug c/66222] gcc error: invalid use of '__builtin_va_arg_pack ()' at -O2 and up & pass at noopt


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66222

Justin Chen <justinpopo6 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |justinpopo6 at gmail dot com

--- Comment #4 from Justin Chen <justinpopo6 at gmail dot com> ---
Created attachment 43486
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43486&action=edit
Preprocessed File

Attached preprocessed c file.
I am having a similar error with this build command. (Compiles properly without
-Ox flag)

gcc -c -o av.o -DSPEC_CPU2000_NEED_BOOL -O1 av.c
In file included from /usr/include/stdio.h:936:0,
                 from perlsdio.h:5,
                 from iperlsys.h:203,
                 from perl.h:325,
                 from av.c:16:
/usr/include/x86_64-linux-gnu/bits/stdio2.h: In function ‘sprintf’:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:33:10: error: invalid use of
‘__builtin_va_arg_pack ()’
   return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
          ^
/usr/include/x86_64-linux-gnu/bits/stdio2.h: In function ‘snprintf’:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: error: invalid use of
‘__builtin_va_arg_pack ()’
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^
/usr/include/x86_64-linux-gnu/bits/stdio2.h: In function ‘fprintf’:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:97:10: error: invalid use of
‘__builtin_va_arg_pack ()’
   return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
          ^
/usr/include/x86_64-linux-gnu/bits/stdio2.h: In function ‘printf’:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:104:10: error: invalid use of
‘__builtin_va_arg_pack ()’
   return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
          ^
/usr/include/x86_64-linux-gnu/bits/stdio2.h: In function ‘dprintf’:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:141:10: error: invalid use of
‘__builtin_va_arg_pack ()’
   return __dprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt,

gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
5.4.0-6ubuntu1~16.04.9' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-5 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.9)

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