https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81186
Bug ID: 81186
Summary: SIGSEGV when using Address Sanitizer with nested
functions
Product: gcc
Version: 7.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: abacabadabacaba at gmail dot com
Target Milestone: ---
gcc version 7.1.0 (Debian 7.1.0-7)
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 7.1.0-7'
--with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-7
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Program:
int main() {
__label__ l;
void f() {
goto l;
}
l:
return 0;
}
Commands:
$ gcc -fsanitize=address -o test test.c
$ ./test
ASAN:DEADLYSIGNAL
=================================================================
==4734==ERROR: AddressSanitizer: SEGV on unknown address 0x564cfe0a887a (pc
0x564cfe0a88d2 bp 0x7ffc4f3a68b0 sp 0x7ffc4f3a6800 T0)
==4734==The signal is caused by a WRITE memory access.
#0 0x564cfe0a88d1 in main (/path/to/test+0x8d1)
#1 0x7faed07412b0 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x202b0)
#2 0x564cfe0a87d9 in _start (/path/to/test+0x7d9)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/path/to/test+0x8d1) in main
==4734==ABORTING
With GCC 6, this code works fine.
