[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-07-14 11:13:13 UTC ---
Why does gthr-posix.h even include <unistd.h>?

--- gcc/gthr-posix.h.orig       2011-07-14 11:09:00.148778460 +0000
+++ gcc/gthr-posix.h    2011-07-14 11:09:01.763786789 +0000
@@ -39,7 +39,6 @@
 #endif

 #include <pthread.h>
-#include <unistd.h>

 typedef pthread_t __gthread_t;
 typedef pthread_key_t __gthread_key_t;


The names from <pthread.h> will still be declared, but that's a LOT better than
bringing in everything from <unistd.h>

If some crufty OS needs <unistd.h> it should only be included conditionally