Hi all,
On Tue, 30 May 2023 12:59:18 -0700
"'Sam Clegg' via emscripten-discuss" <emscripten-discuss@googlegroups.com>
wrote:
> On Tue, May 30, 2023 at 12:10 PM 'Dieter Weidenbrück' via
> emscripten-discuss <emscripten-discuss@googlegroups.com> wrote:
>
> > All,
> > with lots of debug lines I am able to isolate one error in my code,
> > however, I have not been able yet to build a reduced test case for it.
> > I tested this with a single worker to avoid races.
> >
> > The pointer in question got allocated in the worker first. Later I needed
> > to enlarge the size. Using code like the following snippet I detected that
> > the content of the reallocated block was different from the original one
> > (considering the old size only, of course):
> > Assume p is the block that was allocated initially with size oldSize:
> > #define smallChunkSize 256
> > uint8_T test1[smallChunkSize],test2[smallChunkSize];
> > uint8Ptr_T p = (uint8Ptr_T)myP;
> > uint8Ptr_T newP = 0L;
> > int i,n;
> >
> > n = min(oldSize,smallChunkSize); memcpy(test1,p,n);
> > newP = realloc(p,newSize);
> > assert(newP != 0L);
> >
> > memcpy(test2,newP,n);
> >
> > for (i=0;i<n;i++){
> > assert(test1[i] == test2[i]);
please trim the quoted parts of the emails:
https://en.wikipedia.org/wiki/Posting_style . 70 kilibytes emails are appalling
.
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Shlomi Fish https://www.shlomifish.org/
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