Raspberry PI4 segfault after load file:

[alexfish]

Hi All

although not tested with bacon as yet
loding a file;
since been a few weeks trying to find the F******G bug

the bug

close(file);
this will corrupt the stack,
as fix I just found that free(file) will work for now:

sorry for the c code: but time is passed 12 here and think my ears will be burning in a few hours

the c code

void
load ( char *filename){
FILE *f = fopen(filename, "r");
fseek(f, 0, SEEK_END);
long fsize = ftell(f);
fseek(f, 0, SEEK_SET);  /* same as rewind(f); */
//* sizeof(char)
char *str=(char*) malloc(fsize* sizeof(char*));
fread(str, 1, fsize, f);
//close(f);
free(f);
puts( str);
free (str);
//str[fsize] = 0;
}
tested with valgrind::

Good Tidings to You All;
+
BR
Alex

[Pjot]

Hi Alex,

If you open a file using 'fopen' then you have to use 'fclose' to close the file handle.

HTH
Peter

[alexfish]

Hi Peter

have tried the fclose , same seg fault
I am still playing with the bits , have found if do a
fseek(f, 0, SEEK_END);
and the 'fclose' the file it fails
when returns to to other functions in the program.
if do
fseek(f, 0, SEEK_SET);
it passes:

at present no read is done, as to why the SEEK_END ?

although bacon load and the traditional read line are good

while I am here , is there a currency feature in bacon

have tested this
PROTO setlocale
setlocale(LC_NUMERIC, "")
PRINT 2000567.89 FORMAT " %'15.2Lf"

BR
Alex

[alexfish]

Ah well

found the segfault, I think says he

in a different routine:
looks like got a mix up on new string , used malloc and then strcat and should have used strcpy:

time will tell.

strange that the app was working untill I used the load file.
+ if I free the file ,free(f) instead of close or fclose(f); it will work

I hate C.

BR
Alex

[Pjot]

Dec 25, 2020 16:52:05 GMT 1 alexfish said:

I hate C.

That makes two of us

Regards
Peter