patch 8.0.1300: file permissions may end up wrong when writing
Problem: File permissions may end up wrong when writing.
Solution: Use fchmod() instead of chmod() when possible. Don't truncate
until we know we can change the file.
diff --git a/src/config.h.in b/src/config.h.in
index ec9fc59..7d61220 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -156,9 +156,11 @@
/* Define if you the function: */
#undef HAVE_FCHDIR
#undef HAVE_FCHOWN
+#undef HAVE_FCHMOD
+#undef HAVE_FLOAT_FUNCS
#undef HAVE_FSEEKO
#undef HAVE_FSYNC
-#undef HAVE_FLOAT_FUNCS
+#undef HAVE_FTRUNCATE
#undef HAVE_GETCWD
#undef HAVE_GETPGID
#undef HAVE_GETPSEUDOTTY