Bug 19975

If in program file is open, and this file does not have rights to read, fgets() and fread() will cause segmentation violation. fgets() and fread() on "failed" FILE* returned by fopen() crashes program also (use the source code below but do not 'touch test') - stupid but possible programmer's error. I don't know about read() call and others.

Fix: 

I'm not competent in fixing, but I would like to be :) Please, CC: chucha@jam.tario.ru while discussing this problem, or tell me maillist (oh, how I'm tired of all of them! ;) where this problem will be discussed. Or, if I'm really wrong and my trouble is only in my mind, let me know also... Good luck!
How-To-Repeat: 

#include <stdio.h>

extern int errno;

main() {
	FILE *file;
	char str[1024];

	file = fopen("test", "r");
//	fgets(str, sizeof(str), file);
//	fread(str, sizeof(str), 1, file);

	printf("feof(file) = %d, errno = %d, ferror(file) = %d\n",
		feof(file), errno, ferror(file));
}