Re: [Dev-C++] Allocation problem

[Reid T. <rei...@at...>]

why is longest_len being cast to a char * in sizeof? and where is
longest_len defined/set?
 >>   info.input = (char *)malloc((sizeof(char)*longest_len)*1);



Matthews wrote:

> Still giving me the same crash :\
>
> At 11:32 AM 20/09/2003 +0200, Per Westermark wrote:
> >When you allocate buffers for strings, you must allocate room for
> >strlen(str)+1
> >characters, or the termination character '\0' will not fit.
> >
> >/Per W
> >
> >On Fri, 19 Sep 2003, Matthews wrote:
> >
> >> I'm working on a program to generate makefiles for me, and I 
> currently have
> >> it set up to read different sections of a file to generate the 
> options.
> >> One section is %input, which has a list of filenames to include, eg.
> >>
> >> prj.txt
> >>
> >> %input
> >> main.c
> >> vid.c
> >> gui.c
> >>
> >> I read these into a struct organized like so:
> >>
> >> struct prj_info
> >> {
> >>   ...
> >>   char **input;
> >>   ...
> >> }
> >>
> >> And I allocate space based on how many files there are (an array of
> >> strings, basically)
> >>
> >> My problem is that I get errors when running the following C code:
> >>
> >> if(!strncmp("%include",t,strlen(t)-1))
> >> {
> >>   count = 0;
> >>   skip_line(buf);
> >>   getword(buf,t);
> >>   longest_length = strlen(t);
> >>   info.input = (char *)malloc((sizeof(char)*longest_len)*1);
> >>   if(!info.input)
> >>   {
> >>     printf("OH NOS\n");
> >>     return 0;
> >>   }
> >>   //CRASH HERE
> >>   strcpy(info.input[count],t);
> >>   while(*buf!='%')
> >>   {
> >>     while(*buf=='#'||isspace(*buf)) skip_line(buf);
> >>     getword(buf,t);
> >>     if(strlen(t)>longest_length) longest_length = strlen(t);
> >>     count++;
> >>     realloc(info.input,(sizeof(char)*longest_length)*count);
> >>     if(!info.input)
> >>     {
> >>      printf("ERR0RZ\n");
> >>      return 0;
> >>     }
> >>     strcpy(info.input[count],t);
> >>     skip_line(buf);
> >>   }
> >> }
> >>
> >> Buf is the dumped contents of a file (like prj.txt), getword() 
> places a
> >> word from buf into t and skip_line() skips to the next line in buf.
> >>
> >> The code compiles fine, but crashes at the first strcpy().  Any 
> help would
> >> be appreciated.
> >>
> >>
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