Bug#786850: gcc-4.9: AddressSanitizer fails with pthread_cond_init

[Erik de Castro Lopo <erikd@mega-nerd.com>]

Package: gcc-4.9
Version: 4.9.2-16
Severity: normal

Dear Maintainer,

Trivial C program:

    #include <stdio.h>
    #include <pthread.h>
    int main (void)
    {   pthread_cond_t cond;
        pthread_cond_init(&cond, NULL);
        return 0;
    }

Above works correctly when compiled and run (even under Valgrind) as:

     gcc -Wall cond_init.c -o cond_init && valgrind ./cond_init

on both x86_64/linux and armhf/linux.

However, then compiled with -fsanitize=address as:

     gcc -Wall -fsanitize=address cond_init.c -o cond_init && ./cond_init

it works correctly on x86_64/linux but gets a SIGSEGV on armhf/linux:

    ASAN:SIGSEGV
    =================================================================
    ==23193==ERROR: AddressSanitizer: SEGV on unknown address 0x00000000 (pc 0x00000000
    sp 0xbeffefb0 bp 0x00000000 T0)

    AddressSanitizer can not provide additional info.
    SUMMARY: AddressSanitizer: SEGV ??:0 ??
    ==23193==ABORTING

Apparently this was a problem in gcc-4.8

    https://code.google.com/p/address-sanitizer/issues/detail?id=297

but I'm using the Debian gcc-4.9 package.



-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (900, 'testing'), (800, 'unstable'), (1, 'experimental')
Architecture: armhf (armv7l)

Kernel: Linux 3.10.72+ (SMP w/8 CPU cores; PREEMPT)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_AU.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages gcc-4.9 depends on:
ii  binutils        2.25-7
ii  cpp-4.9         4.9.2-16
ii  gcc-4.9-base    4.9.2-16
ii  libc6           2.19-18
ii  libcloog-isl4   0.18.3-1
ii  libgcc-4.9-dev  4.9.2-16
ii  libgmp10        2:6.0.0+dfsg-6
ii  libisl13        0.14-2
ii  libmpc3         1.0.3-1
ii  libmpfr4        3.1.2-3
ii  zlib1g          1:1.2.8.dfsg-2+b1

Versions of packages gcc-4.9 recommends:
ii  libc6-dev  2.19-18

Versions of packages gcc-4.9 suggests:
pn  gcc-4.9-doc      <none>
pn  gcc-4.9-locales  <none>
pn  libasan1-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  libquadmath-dbg  <none>
pn  libtsan0-dbg     <none>
pn  libubsan0-dbg    <none>

-- no debconf information