Bryan Scaringe [EMAIL PROTECTED] wrote:
> It is my understandng that in order for C++ to "delete" a
> dynamically-allocated
> object, that object need to have been created via "new".
>
> That said, I'd like to see the code where you do the allocation.
You are right. the memory allocation is done using calloc. Somthing like
this:
void **new_hd = (void**)calloc(1, (list_count(l) + l->grow_size) *
sizeof(void*));
So I replaced delete with free, and g++ seems happy again. But it still
fails with some of the warning messages.
Eg. if I compile with this:
$ g++ -g -c misc.c
misc.c: In function `char * cash(double, int, int)':
misc.c:44: implicit declaration of function `int bracket(...)'
misc.c:45: implicit declaration of function `int comma(...)'
The output is exactly the same with the newest g++ version, and older
g++. But the difference is that the older version will create a .o file
and the new version will not. And I can only see an error message when
they are compiled using make.
Shao.
>
> Also, you may need to type-cast the void pointer. The new compiler version
> may be more picky about that sort of thing (though if that's the case it
> should
> be a warning, not an error).
>
> The comp.lang.c++ people will peobably be more helpful though.
>
> If you do get a response, could you forward me a copy? thanks.
>
> Bryan
>
>
> On 15-Feb-2000 Shao Zhang wrote:
> > Hi,
> > I have posted this to comp.lang.c++, but hope someone here can
> > help me as well. Thanks.
> >
> > =====================
> > I have a c++ program that compiles fine with
> > earlier version of g++, but it no longer compiles with
> > the newsest release 2.95.2.
> >
> > Here is the relevant bit of code:
> >
> > typedef struct List
> > {
> > void **hd; /* first item */
> > void **cr; /* current item */
> > void **tl; /* last item */
> > void **mx; /* max item before growing is
> > required */
> > int grow_size;
> > } List;
> >
> > Some macros defined:
> >
> > #define fast_list_first(l) ((l && l->hd)? *(l->cr = l->hd) : 0)
> > #define fast_list_last(l) ((l && l->hd)? *(l->cr = l->tl) : 0)
> >
> > And a Function like this:
> > void lfree(List *l)
> > {
> > void *item;
> > for (item=fast_list_first(l); item != NULL;
> > item=fast_list_last(l))
> >###->>>> delete item;
> > }
> >
> >
> > When compiled with g++(2.95.2), it failed with this:
> > [line 55 is the line marked with arrows above]
> > % g++ -g -c misc.c
> > misc.c: In function `void lfree(List *)':
> > misc.c:55: warning: `void *' is not a pointer-to-object type
> >
> > It gives me the warning message, but no .o file is created, and
> > if I put it in a makefile, it results:
> > % make misc.o
> > g++ -g -c misc.c
> > misc.c: In function `void lfree(List *)':
> > misc.c:55: warning: `void *' is not a pointer-to-object type
> > make: *** [misc.o] Error 1
> >
> >
> > Thanks for any help in advance.
> >
> > Shao.
> >
> >
> > --
> > ____________________________________________________________________________
> > Shao Zhang - Running Debian 2.1 ___ _ _____
> > Department of Communications / __| |_ __ _ ___ |_ / |_ __ _ _ _ __
> > _
> > University of New South Wales \__ \ ' \/ _` / _ \ / /| ' \/ _` | ' \/ _`
> > |
> > Sydney, Australia |___/_||_\__,_\___/ /___|_||_\__,_|_||_\__,
> > |
> > Email: [EMAIL PROTECTED]
> > |___/
> > _____________________________________________________________________________
> >
> >
> > --
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>
>
--
____________________________________________________________________________
Shao Zhang - Running Debian 2.1 ___ _ _____
Department of Communications / __| |_ __ _ ___ |_ / |_ __ _ _ _ __ _
University of New South Wales \__ \ ' \/ _` / _ \ / /| ' \/ _` | ' \/ _` |
Sydney, Australia |___/_||_\__,_\___/ /___|_||_\__,_|_||_\__, |
Email: [EMAIL PROTECTED] |___/
_____________________________________________________________________________
