Problem including util.h at compile time
macOS Serra 10.12.6, Xcode 9. The following code compiles with warnings:
#include <stdio.h>
#include <util.h>
FILE * in;
char * line;
size_t len = 0;
size_t lineno = 0;
/* This program segfaults without this declaration. */
/*char *fparseln(FILE *, size_t *, size_t *, const char[3], int);*/
int main() {
in = fopen("testfile.txt", "r");
while((line = fparseln(in, &len, &lineno, NULL, 0)) != NULL) {
printf("%zu:len=%zu %s\n", lineno, len, line);
}
fclose(in);
return 0;
}
$ cat testfile.txt
this is line one
this is line two
this is line three
wow..linefour
$ gcc -I/usr/include -o chk_fparseln chk_fparseln.c
chk_fparseln.c:15:19: warning: implicit declaration of function 'fparseln' is invalid in C99 [-Wimplicit-function-declaration]
while((line = fparseln(in, &len, &lineno, NULL, 0)) != NULL) {
^
chk_fparseln.c:15:17: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion]
while((line = fparseln(in, &len, &lineno, NULL, 0)) != NULL) {
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 warnings generated.
However, fparseln() is defined in util.h. I don't understand why util.h is apparently not being included at compile time. Worse yet, the code segfaults when invoked.
If I uncomment the function declaration in the code above, the code compiles cleanly and runs without errors:
$ ./chk_fparseln
1:len=16 this is line one
2:len=16 this is line two
3:len=18 this is line three
4:len=13 wow..linefour
Any ideas how to include util.h?
-Jason
iMac, macOS Sierra (10.12.6), Xcode 9
