commit b869c0da31716ff14bbfd63346d140d0a1d68af7
author Bram Moolenaar <Bram@vim.org> Wed Jul 20 00:10:51 2016 +0200
committer Bram Moolenaar <Bram@vim.org> Wed Jul 20 00:10:51 2016 +0200
tree 5a182ff0c5cc310da39c4892cc0aed7903ee82bf
parent 53bdec2ac9b994eee9c60f2ab9ad8a8afb2b9594

patch 7.4.2080
Problem:    When using PERROR() on some systems assert_fails() does not see
            the error.
Solution:   Make PERROR() always report the error.

src/vim.h

diff --git a/src/vim.h b/src/vim.h
index 488f270..e2d4cc4 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -1652,7 +1652,7 @@
 #ifdef HAVE_STRERROR
 # define PERROR(msg)		    (void)emsg3((char_u *)"%s: %s", (char_u *)msg, (char_u *)strerror(errno))
 #else
-# define PERROR(msg)		    perror(msg)
+# define PERROR(msg)		    do_perror(msg)
 #endif
 
 typedef long	linenr_T;		/* line number type */