Re: [Dev-C++] Allocation problem

[Matthews <dem...@uw...>]

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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>
>