view tests/mini/bug34.d @ 1499:df11cdec45a2

Another shot at fixing the issues with (constant) struct literals and their addresses. See DMD2682, #218, #324. The idea is to separate the notion of const from 'this variable can always be replaced with its initializer' in the frontend. To do that, I introduced Declaration::isSameAsInitializer, which is overridden in VarDeclaration to return false for constants that have a struct literal initializer. So {{{ const S s = S(5); void foo() { auto ps = &s; } // is no longer replaced by void foo() { auto ps = &(S(5)); } }}} To make taking the address of a struct constant with a struct-initializer outside of function scope possible, I made sure that AddrExp::optimize doesn't try to run the argument's optimization with WANTinterpret - that'd again replace the constant with a struct literal temporary.
author Christian Kamm <kamm incasoftware de>
date Sun, 14 Jun 2009 19:49:58 +0200
parents 1bb99290e03a
children
line wrap: on
line source

module bug34;

class MyTypeInfo_Pointer
{
    char[] toString() { return m_next.toString() ~ "*"; }

    int opEquals(Object o)
    {   TypeInfo_Pointer c;

    return this is o ||
        ((c = cast(TypeInfo_Pointer)o) !is null &&
         this.m_next == c.m_next);
    }

    hash_t getHash(void *p)
    {
        return cast(uint)*cast(void* *)p;
    }

    int equals(void *p1, void *p2)
    {
        return cast(int)(*cast(void* *)p1 == *cast(void* *)p2);
    }

    int compare(void *p1, void *p2)
    {
    if (*cast(void* *)p1 < *cast(void* *)p2)
        return -1;
    else if (*cast(void* *)p1 > *cast(void* *)p2)
        return 1;
    else
        return 0;
    }

    size_t tsize()
    {
    return (void*).sizeof;
    }

    void swap(void *p1, void *p2)
    {   void* tmp;
    tmp = *cast(void**)p1;
    *cast(void**)p1 = *cast(void**)p2;
    *cast(void**)p2 = tmp;
    }

    TypeInfo next() { return m_next; }
    uint flags() { return 1; }

    TypeInfo m_next;
}

void main()
{
}