[Bug libstdc++/66354] New: [UBSAN] stl_algobase.h:708:7: runtime error: null pointer passed as argument

["dimhen at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66354

            Bug ID: 66354
           Summary: [UBSAN] stl_algobase.h:708:7: runtime error: null
                    pointer passed as argument
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dimhen at gmail dot com
  Target Milestone: ---

Sorry, I have no compact testcase.

/usr/local/gcc_current/include/c++/6.0.0/bits/stl_algobase.h:708:7: runtime
error: null pointer passed as argument 1, which is declared to never be null

$ /usr/local/gcc_current/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/usr/local/gcc_current/bin/g++
COLLECT_LTO_WRAPPER=/usr/local/gcc_current/libexec/gcc/x86_64-unknown-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /home/dimhen/src/gcc_current/configure
--prefix=/usr/local/gcc_current --enable-static
--enable-checking=yes,df,fold,rtl --enable-languages=c,c++,lto --enable-plugin
--disable-libstdcxx-dual-abi --disable-multilib
Thread model: posix
gcc version 6.0.0 20150531 (experimental) [trunk revision 223898] (GCC)