called library procedure is running in infinity cycle on gnu/linux - c

Question

I've got an library which must read data from sqlite database by calling
extern int read(char** argv, int argc); // from header
it must process:
int read(char** argv, int argc) {
char* lineborder1;
char* lineborder2;
char* spaces1;
char* spaces2;
int maxl2 = 0, maxl1 = 0;
int i, maxi1, maxi2;
if (prelude() == -1) return -1;
// etc...
where prelude is inner procedure for sqlite connection:
int prelude() {
timefile = 0;
f = NULL;
#ifndef WIN32
char* temp = (char*)calloc(200, sizeof(char));
#endif
queries = (char**)malloc(sizeof(char*) * q_cnt);
for (x = 0; x < q_cnt; x++) {
queries[x] = (char*)malloc(sizeof(char) * q_size);
}
#ifdef WIN32
retval = sqlite3_open("todo.db3", &handle);
#else
home = (char*)getenv("HOME");
strcpy(temp, home);
retval = sqlite3_open(strcat(temp, "/.todo.db3"), &handle);
free(temp);
#endif
if (retval) {
printf("Database connection failed\n\r");
return -1;
}
return 0;
}
whole source is here : bitbucket: ctodo.c
I call this read from my application:
else if ((strcmp(argv[1], "read") == 0) || (strcmp(argv[1], "r") == 0)) {
return read(argv, argc);
but getting infinity cycle of this read call:
>>./todo r
Database connection failed
Database connection failed
Database connection failed
.... etc
here is how do I build it:
gcc -I . -c -o todo.a ctodo.c -lsqlite3 -O3
gcc -I . -o todo cctodo.c -lsqlite3 -O3 todo.a
help or version calls wrok fine and read works fine on windows, something specific to my linux build is here but I can't find a bug so far. what could call this read to run in infinity cycle like that?

Answer 1

The read function is defined in libc.so, and used to, you know, read data.
It is exceedingly likely that sqlite3_open() calls it.
By introducing your own function called read(), you've made your program enter infinite loop. If you wait long enough, your program will run out of stack and crash.
Doctor, it hurts when I do that. Well, don't do that :-)