Hi,
When I try allocated pointer to a pointer, and in it some pointers
(important: size is 2 bytes), the pointers lose their boundaries.
Why it can happen?
Test program in attach.
PS in freebsd < 7, it's ok, in Linux too.
--
Andrey Zonov
alloc.c
Description: Binary data
_
On Wednesday 24 February 2010 14:44:35 Andrey Zonov wrote:
> Hi,
>
> When I try allocated pointer to a pointer, and in it some pointers
> (important: size is 2 bytes), the pointers lose their boundaries.
> Why it can happen?
>
> Test program in attach.
Your test program is broken:
>#define S1 "
Andrey Zonov writes:
> When I try allocated pointer to a pointer, and in it some pointers
> (important: size is 2 bytes), the pointers lose their boundaries.
Pointers have no boundareis in C.
> PS in freebsd < 7, it's ok, in Linux too.
Only by accident.
DES
--
Dag-Erling Smørgrav - d...@des.n
And how free() finds that the need to release?
Dag-Erling Smørgrav пишет:
Andrey Zonov writes:
When I try allocated pointer to a pointer, and in it some pointers
(important: size is 2 bytes), the pointers lose their boundaries.
Pointers have no boundareis in C.
PS in freebsd < 7
Andrey Zonov writes:
> Dag-Erling Smørgrav writes:
> > Pointers have no boundareis in C.
> And how free() finds that the need to release?
That is a very simple question with a very complicated answer. Whole
books have been written about the subject. Normally, I'd say "look it
up on Wikipedia",
Am 24.02.2010, 20:55 Uhr, schrieb Dag-Erling Smørgrav :
Why is there a 0 after the 'i'? Because when you write "abcdefghi", the
compiler actually stores "abcdefghi\0". That's the definition of
"string" in C: a sequence of characters immediately followed by a 0. If
you don't want the 0 there,
"Matthias Andree" writes:
> Dag-Erling Smørgrav writes:
> > char a[9] = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i' };
> char a[9] = "abcdefghi";
>
> suffices. The compiler knows there isn't room for the terminal '\0'
> and omits it.
Some compilers (gcc at least) warn about it.
DES
--
Dag-Er
On Thursday 25 February 2010 23:46:03 Dag-Erling Smørgrav wrote:
> "Matthias Andree" writes:
> > Dag-Erling Smørgrav writes:
> > > char a[9] = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i' };
> >
> > char a[9] = "abcdefghi";
> >
> > suffices. The compiler knows there isn't room for the terminal '
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