ddrescue segfaults in option parsing after gcc was updated from 4.3.4-4
to 4.5.3-2.
(ddrescue package was build with g++ 4.3.4-3)
I tracked down the problem to a segfault in vector< string > destructor,
see attached testcase.
1. Compile and run with g++ 4.3.4, use -O2 to enable inline expansion:
$ g++ -O2 -o testvector testvector.cpp
$ cygcheck -f /bin/cygstdc++-6.dll
libstdc++6-4.3.4-4
$ ./testvector
vector created (12)
vector destroyed
2. Update libstdc++ and rerun:
$ cygcheck -f /bin/cygstdc++-6.dll
libstdc++6-4.5.3-2
$ ./testvector
vector created (12)
Aborted (core dumped)
Recompiling with new g++ fixes the problem.
Old inline code is probably no longer compatible with code in new
cygstdc++-6.dll.
--
Regards,
Christian Franke
#include <cstdio>
#include <string>
#include <vector>
int main()
{
{
std::vector<std::string> v;
v.resize(1);
printf("vector created (%d)\n", (int)sizeof(v)); fflush(stdout);
}
printf("vector destroyed\n"); fflush(stdout);
return 0;
}
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