[Bug tree-optimization/62032] New: FAIL: vsnprintf-chk.c execution, -O2 -flto -fno-use-linker-plugin -flto-partition=none

[amker.cheng at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62032

            Bug ID: 62032
           Summary: FAIL: vsnprintf-chk.c execution,  -O2 -flto
                    -fno-use-linker-plugin -flto-partition=none
           Product: gcc
           Version: 4.10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: amker.cheng at gmail dot com

Created attachment 33256
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33256&action=edit
tarball of dump files

Hi,
I monitored below failures on both aarch64-none-elf and arm-none-eabi.
FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c execution,  -O2 -flto
-fno-use-linker-plugin -flto-partition=none
FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c execution,  -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects

It's first introduced by r213585, but I am not sure if it's revealed by the
change.  The corresponding (good&bogus) dump files are attached.

arm-none-eabi is configured like:
../gcc/configure --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=arm-none-eabi --prefix=.../trunk-orig/target/ --disable-decimal-float
--disable-libffi --disable-libgomp --disable-libmudflap --disable-libquadmath
--disable-libssp --disable-libstdcxx-pch --disable-nls --disable-shared
--disable-threads --disable-tls --with-gnu-as --with-gnu-ld --with-newlib
--with-headers=yes --with-sysroot=.../trunk-orig/target/arm-none-eabi
--with-host-libstdcxx=... --with-mode=thumb --with-arch=armv7-m
--disable-multilib --enable-lto --enable-languages=c,c++,lto

Thanks.