Bug#862176: gcc-snapshot: needs packages from experimental, with -fsanitize=address

[Vincent Lefevre <vincent@vinc17.net>]

Package: gcc-snapshot
Version: 20170505-1
Severity: important

If I compile a program with

  gcc-snapshot -fsanitize=address

I get when running it:

./a.out: error while loading shared libraries: libasan.so.4: cannot open shared object file: No such file or directory

libasan.so.4 is part of libasan4, which exists only in experimental,
while gcc-snapshot 20170505-1 is in unstable.

-- System Information:
Debian Release: 9.0
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64
 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-3-amd64 (SMP w/12 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gcc-snapshot depends on:
ii  binutils        2.28-4
ii  libc6           2.24-10
ii  libc6-dev       2.24-10
ii  libc6-dev-i386  2.24-10
ii  libc6-dev-x32   2.24-10
ii  libc6-i386      2.24-10
ii  libc6-x32       2.24-10
ii  libgc1c2        1:7.4.2-8
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  python          2.7.13-2
ii  zlib1g          1:1.2.8.dfsg-5

gcc-snapshot recommends no packages.

Versions of packages gcc-snapshot suggests:
ii  binutils [binutils-gold]  2.28-4

-- no debconf information