PR other/67457

* mmap.c (backtrace_alloc): Correct test for mmap failure. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@227529 138bc75d-0d04-0410-961f-82ee72b054a4

Author: ian

libbacktrace/ChangeLog

@@ -1,3 +1,8 @@
+2015-09-08 Ian Lance Taylor <iant@google.com>
+
+PR other/67457
+* mmap.c (backtrace_alloc): Correct test for mmap failure.
+
 2015-08-31 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
 
 * configure.ac: For spu-*-* targets, set have_fcntl to no.

libbacktrace/mmap.c

@@ -139,7 +139,7 @@ backtrace_alloc (struct backtrace_state *state,
  asksize = (size + pagesize - 1) & ~ (pagesize - 1);
  page = mmap (NULL, asksize, PROT_READ | PROT_WRITE,
  MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- if (page == NULL)
+ if (page == MAP_FAILED)
 error_callback (data, "mmap", errno);
  else
 {