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Gloria Muñoz wrote:
| Hi all!
|
| First of all hello everybody! because I've just joined
| the list. I've had a lok into the Mailing list archive and I've seen
| that this error has happened before to other people but each time the
| solution was different and I haven't found the answer to my specific
| case so here we go!
|
|
| I'm just trying to read a .data file and create a .xls file to use
| with excel; for that I've created the next simple program:
|
| #include <stdio.h>
|
| main (int argc, char* argv[])
| {
| FILE *f1, *f2;
|
|
| char *file_name;
| int num_compressors = 0;
| int num_files = 0;
| int numC = 0;
| char *out_file;
| char *aux;
| char *ctime;
|
| if(argc != 2)
| {
| fprintf(stderr, "Use: %s nameOfFile\n", argv[0]);
|
| exit(1);
| }
|
| // Open source file
| if ((f1 = fopen(argv[1],"r")) == NULL){
| fprintf(stderr, "Can't open %s\n", argv[1]);
| exit(1);
| }
|
| fprintf(stderr, "%s opened\n", argv[1]);
|
|
| fscanf(f1,"%d",&num_compressors
| );
| fprintf(stderr, "Number of compressors: %d\n", num_compressors);
| fscanf(f1,"%d",&num_files);
| fprintf(stderr, "Number of files: %d\n", num_files);
|
|
| do{
| // THE PROBLEM SEEMS TO BEGIN HERE
| fscanf(f1,"%s",out_file);
You have forgotten to allocate some memory for your out_file buffer.
| fprintf(stderr, "Name of compressor: %s\n", out_file);
|
| out_file = strcat(out_file, ".xls");
| fprintf(stderr, "Read name of the new file: %s\n", out_file);
| // Create new .xls file
| f2 = fopen (out_file, "w");
|
| if (f2==NULL){
| fprintf(stderr, "Can't open %s\n", out_file);
| exit(1);
| }
|
| fscanf(f1,"%s",file_name);
| fprintf(f2, "%s\t", file_name);
|
| fscanf(f1,"%s %s", aux, ctime);
| fprintf(f2, "%s\t", ctime);
| numC++;
| }while (numC < num_compressors);
|
| fclose(f1);
| fclose(f2);
|
|
| }
|
|
| The test .data file is called pruExcel.data and consist of:
|
| 1
| 1
|
| gzip
|
| to_mm_24.bin
|
| real 0m0.614s
| user 0m0.499s
| sys 0m0.015s
|
|
| And the output :
|
|
| $ ./oExcel pruExcel.data
| pruExcel.data opened
| Number of compressors: 1
| Number of files: 1
| 7 [main] oExcel 2988 _cygtls::handle_exceptions: Error while
dumping state
| (probably corrupted stack)
| Segmentation fault (core dumped)
|
| I'm working with Windows XP and CYGWIN_NT-5.1,
|
| any idea would be appreciated!
| Thanks!
|
- --
VH
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