Conference turris::c_plus_plus

3441.0. "compiler ggets memory access violation on UNIX" by HYDRA::DORHAMER () Mon Feb 10 1997 18:44

A software partner who is porting to Digital UNIX v4.0 reported the following
problem, which I have reproduced with the DEC C++ v5.5-004 compiler:

The attached code causes the compiler to generate a fatal error message:

cxx: Fatal: A memory access violation (bus error or segmentation fault)
has occurred.  Please submit a problem report.

They have a work around but wanted to report this as a bug in the compiler.

Here is the source code:

      template <class E>
    struct DMEnumTable {
      char* name;
      E e;
    };

      template <class E>
    class DMEnumDict {
    public:
      DMEnumDict (DMEnumTable<E>* tbl);
    };

    typedef enum {
      apple, orange, banana, pear, grape, kiwi
    } fruit_t;

    DMEnumTable<fruit_t> fruitTable[] = {
      {"apple", apple},
      {"orange", orange},
      {"banana", banana},
      {"pear", pear},
      {"grape", grape},
      {"kiwi", kiwi},
     {0, (fruit_t) 0}
    };

    DMEnumDict<fruit_t> fruitDict (fruitTable);
    

    I have replicated the problem, and will assign it to the appropriate
    developer.
    
    Please thank your software partner for reporting this.
    
    /Bevin

    The problem appears to be fixed in 5.6
    
    /Bevin

    Thanks for checking on this.  Glad to hear that the problem is already
    fixed in the 5.6 compiler.  What is the expected ship date for this
    version of the compiler?
    
    Thanks,
    Karen

V5.6 ship date is July 97.  We'll be in field
test this spring.