Improved default Dune compilation flags

Author: mmottl

dune

@@ -1,4 +1,6 @@
 (env
-  (dev (flags (:standard -w -9 -principal)))
+  (dev
+    (flags (:standard -w -9 -principal))
+    (c_flags (:standard -Wall -pedantic -Wextra -Wunused)))
   (release (ocamlopt_flags (:standard -O3)))
 )

dune-project

@@ -1,2 +1,2 @@
-(lang dune 1.1)
+(lang dune 1.7)
 (name postgresql)

postgresql.opam

@@ -18,7 +18,7 @@ build: [
 
 depends: [
   "ocaml" {>= "4.05"}
-  "dune" {build & >= "1.4.0"}
+  "dune" {build & >= "1.7.0"}
   "base" {build}
   "stdio" {build}
   "base-bytes"

src/dune

@@ -1,11 +1,10 @@
 (library
   (public_name postgresql)
   (c_names postgresql_stubs)
-  (c_flags (
-    (:include c_flags.sexp) -g -O2 -fPIC -DPIC
-    ; NOTE: for debugging before releases
-    ; -Wall -pedantic -Wextra -Wunused -Wno-long-long -Wno-keyword-macro
-  ))
+  (c_flags
+    (:standard) (:include c_flags.sexp) -O2 -fPIC -DPIC
+    -Wno-keyword-macro
+  )
   (c_library_flags (:include c_library_flags.sexp))
   (libraries threads bigarray)
 )

src/postgresql_stubs.c

@@ -528,7 +528,8 @@ static struct custom_operations result_ops = {
   custom_hash_default,
   custom_serialize_default,
   custom_deserialize_default,
-  custom_compare_ext_default
+  custom_compare_ext_default,
+  custom_fixed_length_default
 };
 
 static inline value alloc_result(PGresult *res, np_callback *cb)