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.