Boris Gubenko wrote:
test_actions crashes when std::string is trying to dereference _C_data member which happens to be zero. It happens inside regex_match(). Attached slightly reduced reproducer.
test_symbols.cpp has a similar call to regex_match() and I'm sure it crashes for the same reason.
Just rearranging the code in RW library <string> header makes the crash disappear which may be indicative of a code generation problem. And everything is fine when compiling with g++ 4.2.1.
I suggest, unless you have a reason to believe that it may be some code in xpressive that is causing the problem, we treat these test failures as aC++ code generation problem at this point. We'll investigate it and report back.
#include <boost/xpressive/xpressive_static.hpp> #include <boost/xpressive/regex_actions.hpp> extern "C" int puts(const char*);
namespace xp = boost::xpressive;
int main() { using namespace boost::xpressive;
std::string result; std::string str("foo bar"); sregex rx = (+_w)[ xp::ref(result) += _ ] >> *(' ' >> (+_w)[ xp::ref(result) += ',' + _ ]); puts("calling regex_match"); regex_match(str, rx); puts("exiting"); }
Hi, Boris. Is there any news about this issue? Can you suggest a work-around or should I mark these failures expected? -- Eric Niebler Boost Consulting www.boost-consulting.com