Bug#855012: clang-3.9: Segmentation fault when compiling

[Eric Peter Stavarache]

Package: clang-3.9
Version: 1:3.9.1-4
Severity: important

Dear Maintainer,


This the code in question:


#include <memory>

struct StructA;
struct StructB;
struct StructC;

enum class action { };

static action foo(StructA &eth_context)
{
}

static void fun(struct StructB *response, void *callbackContext)
{
        std::shared_ptr<StructC> context =
                std::shared_ptr<StructC>(reinterpret_cast<StructC *>(callbackContext));
}



This is the compilation command:


/usr/lib/llvm-3.9/bin/clang -cc1 -triple x86_64-pc-linux-gnu -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names -main-file-name netparser.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -resource-dir /usr/lib/llvm-3.9/bin/../lib/clang/3.9.1 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-3.9/bin/../lib/clang/3.9.1/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O0 -Wall -Wextra -Werror -Wno-strict-overflow -Wfatal-errors -std=c++14 -fdeprecated-macro -ferror-limit 19 -fmessage-length 131 -fvisibility hidden -fwrapv -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o main.cpp.o -x c++ main.cpp


I have also attached a core file generated.


-- System Information:
Debian Release: 9.0
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386, armel

Kernel: Linux 4.9.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, 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 clang-3.9 depends on:
ii  binutils                 2.27.90.20170124-2
ii  libc6                    2.24-9
ii  libc6-dev                2.24-9
ii  libclang-common-3.9-dev  1:3.9.1-4
ii  libclang1-3.9            1:3.9.1-4
ii  libgcc-6-dev             6.3.0-6
ii  libgcc1                  1:6.3.0-6
ii  libjsoncpp1              1.7.4-3
ii  libllvm3.9               1:3.9.1-4
ii  libobjc-6-dev            6.3.0-6
ii  libstdc++-6-dev          6.3.0-6
ii  libstdc++6               6.3.0-6

Versions of packages clang-3.9 recommends:
ii  llvm-3.9-dev  1:3.9.1-4
ii  python        2.7.13-2

Versions of packages clang-3.9 suggests:
pn  clang-3.9-doc  <none>
pn  gnustep        <none>
pn  gnustep-devel  <none>

-- no debconf information
-------------- next part --------------
#include <memory>

struct StructA;
struct StructB;
struct StructC;

enum class action { };

static action foo(StructA &eth_context)
{
}

static void fun(struct StructB *response, void *callbackContext)
{
    std::shared_ptr<StructC> context =
        std::shared_ptr<StructC>(reinterpret_cast<StructC *>(callbackContext));
}

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