From: "Patrick Chen" <pck66 AT pd DOT jaring DOT my>
Newsgroups: comp.os.msdos.djgpp
Subject: fread can't read a second time.
Date: Tue, 30 Jul 2002 14:23:51 +0800
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Use C,djgpp. IDE Rhide.

Dear All,
     I have this weird problem. The first block will load a red.bmp, open
it, get the header, pass it to process ld_memtofile along with fin to close
it inside the function. Without the second block of open&process green.bmp,
mb[0]->data[234} sample, did receive the right value.
   When I put the second block to process the green.bmp,
SIGSEGV general protection fault occur at the fread of the second block. It
cannot transfer the data from green.bmp to file_header_ex2 even though
fileheader_ex2 is a new char array with new fin2 which is not 0. Can some
good people explain why this can happen and how to solve it?
Thank you.

Patrick


int main() {
MOUSEBITMAP *mb[1];
char fileheader_ex[54],fileheader_ex2[54];
FILE *fin,*fin2;

fin=fopen("red.bmp","rb");
    if(fin==NULL)
    {
        printf("Can't open input file\n");
        exit(0);
    }
fread(fileheader_ex,sizeof(BYTE),54,fin);
ld_filetomem(&mb[0],fileheader_ex, fin);

fin2=fopen("green.bmp","rb");
    if(fin==NULL)
    {
        printf("Can't open input file\n");
        exit(0);
    }
fread(fileheader_ex2,sizeof(BYTE),54,fin2);// FAULT
ld_filetomem(&mb[1],fileheader_ex2, fin2);


while(!kbhit());

return 0
}