Package: gcc-6
Version: 6.4.0-1
Severity: important

Dear Maintainer,

building autotools packages with address sanitizer currently breaks with gcc-6 
and gcc-7.
gcc-5 is not effected.

This breaks quality checking and fuzzing with ASAN enabled.
Using LD_PRELOAD to load libasan first doesn't change anything.

This doesn't help either (in case this is a ASLR problem with the kernel):
echo 0 >/proc/sys/kernel/randomize_va_space


$ CC=gcc-6 CFLAGS="-g -fsanitize=address -fno-omit-frame-pointer" ./configure   
                                                            
checking for a BSD-compatible install... /usr/bin/install -c                    
                                                                                
     
checking whether build environment is sane... yes                               
                                                                                
     
checking for a thread-safe mkdir -p... /bin/mkdir -p                            
                                                                                
     
checking for gawk... gawk                                                       
                                                                                
     
checking whether make sets $(MAKE)... yes                                       
                                                                                
     
checking whether make supports nested variables... yes                          
                                                                                
     
checking for gcc... gcc-6                                                       
                                                                                
     
checking whether the C compiler works... yes                                    
                                                                                
     
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... configure: error: in 
`/usr/oms/src/libpsl':
configure: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details


>From config.log:
configure:3459: gcc-6 -o conftest -g -fsanitize=address -fno-omit-frame-pointer 
  conftest.c  >&5
configure:3463: $? = 0
configure:3470: ./conftest
==13782==Shadow memory range interleaves with an existing memory mapping. ASan 
cannot proceed correctly. ABORTING.
==13782==ASan shadow was supposed to be located in the 
[0x00007fff7000-0x10007fff7fff] range.
==13782==Process memory map follows:
        0x005450338000-0x005450339000   /usr/oms/src/libpsl/conftest
        0x005450539000-0x00545053a000   /usr/oms/src/libpsl/conftest
...
        0x7fff70943000-0x7fff70964000   [stack]
        0x7fff709a4000-0x7fff709a6000   [vvar]
        0x7fff709a6000-0x7fff709a8000   [vdso]
==13782==End of process memory map.
configure:3474: $? = 1
configure:3481: error: in `/usr/oms/src/libpsl':
configure:3483: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details


Regards, Tim


-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.11.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL 
set to en_US.UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set 
to en_US.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gcc-6 depends on:
ii  binutils      2.28-6
ii  cpp-6         6.4.0-1
ii  gcc-6-base    6.4.0-1
ii  libc6         2.24-12
ii  libcc1-0      7.1.0-9
ii  libgcc-6-dev  6.4.0-1
ii  libgcc1       1:7.1.0-9
ii  libgmp10      2:6.1.2+dfsg-1
ii  libisl15      0.18-1
ii  libmpc3       1.0.3-1+b2
ii  libmpfr4      3.1.5-1
ii  libstdc++6    7.1.0-9
ii  zlib1g        1:1.2.8.dfsg-5

Versions of packages gcc-6 recommends:
ii  libc6-dev  2.24-12

Versions of packages gcc-6 suggests:
ii  gcc-6-doc         6.3.0-1
pn  gcc-6-locales     <none>
pn  gcc-6-multilib    <none>
pn  libasan3-dbg      <none>
pn  libatomic1-dbg    <none>
pn  libcilkrts5-dbg   <none>
pn  libgcc1-dbg       <none>
pn  libgomp1-dbg      <none>
pn  libitm1-dbg       <none>
pn  liblsan0-dbg      <none>
pn  libmpx2-dbg       <none>
pn  libquadmath0-dbg  <none>
pn  libtsan0-dbg      <none>
pn  libubsan0-dbg     <none>

-- no debconf information

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