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assertion "ptr != MAP_FAILED" failed while using mmap
- From: "Alex Vinokur" <alexvn at connect dot to>
- To: cygwin at cygwin dot com
- Date: Wed, 25 Jun 2003 16:09:41 +0300
- Subject: assertion "ptr != MAP_FAILED" failed while using mmap
===========================================
Windows 2000
CYGWIN_NT-5.0 1.3.22(0.78/3/2)
GNU gcc version 3.2 20020927 (prerelease)
===========================================
Here is some function.
--------------------------------------
void read_file (char* filename_i)
{
int fd = open(filename_i, O_RDONLY);
assert (fd > 2);
off_t sz = lseek(fd, 0, SEEK_END);
char* ptr = (char*)mmap(0, sz, PROT_READ, 0, fd, 0);
assert (ptr != MAP_FAILED); // Here assertion failed
if (ptr != MAP_FAILED)
{
string str(ptr, ptr+sz);
munmap(ptr, sz);
}
close(fd);
}
--------------------------------------
Assertion "ptr != MAP_FAILED)" failed.
What might cause that?
Thanks,
--
==========================================
Alex Vinokur
mailto:alexvn@connect.to
http://www.simtel.net/pub/oth/19088.html
http://sourceforge.net/users/alexvn
==========================================
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