Question

I use this routine to do a binary read from file to memory, which worked fine until now… on iOS at least, in the simulator(…don’t have the paid developer program(yet 😉 ))

The numbers e.g. fileSize, bytesRead are OK, but it gives gibberish at the end…

I can’t have overwritten memory, since I do the output right away…

Then I thought it could be an alignment boundary issue e.g. fileSize % 4 = det. gibberish.
But that would be strange behavior, the function gets a size and a count, the lib should calc a multiple byte read on the background, so that shouldn’t cause the problem…

Here’s the code I use:

uint8_t *readFileToMemory(FILE *fp)
{
    fseek(fp, 0, SEEK_END);
    long fileSize = ftell(fp);
    rewind(fp);
    //
    printf("fileSize %lu bytes\n",fileSize);
    //
    uint8_t *fileData = NULL;
    //
    fileData = (uint8_t *)requestMemory(fileData, (MEM_TYPE_MEMSIZE)fileSize, BF_MEM_ZERO_NO, "readFileToMemory()");
    fread(fileData, 1, (size_t)fileSize, fp);
    //
    long sizeRead = fread(fileData, 1, (size_t)fileSize, fp);
    printf("sizeRead %lu bytes\n",sizeRead);
    //
    fclose(fp);
    //
    printf("+\n+\nfileData:\n%s+\n+\n",fileData);
    //
    return fileData;
}

The reason why I post this question is “WHY the gibberish?” on iOS-sim, I do have a simple workaround btw…

Niels

Answer 1

I am here now, so I might as well provide an answer for closure 😉

I forgot to put an ‘\0’ at the end of the binary file before passing it along as (c/glsl NULL-terminated)string… Oops 🙂

I thank borrrden for his remarks on the Apple libs binary-read, which I still need to look into… (time time time)

Niels