[Bug tree-optimization/27768] New: [4.2 regression] wrong-code with vectors

[reichelt at gcc dot gnu dot org]

The following code crashes when I compile it with -O2 (mainline)

==========================
#include<vector>

struct A
{
    std::vector<int> v;
    char             c;
};

struct B {};

int main()
{
    A a;
    A a2(a);
    std::vector<B*> b;
    return 0;
}
==========================

The program dies with:

*** glibc detected *** free(): invalid pointer: 0x00002aaaaabc0c60 ***
zsh: 13987 abort      a.out

I'll come up with a reduced testcase next week if nobody beats me.

Happens only with mainline, -O1 is not affected.


-- 
           Summary: [4.2 regression] wrong-code with vectors
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27768