1 files changed, 23 insertions, 28 deletions

diff --git a/src/PJ_vgridshift.c b/src/PJ_vgridshift.c
index 0f031d4f..d58972f4 100644
--- a/src/PJ_vgridshift.c
+++ b/src/PJ_vgridshift.c
@@ -1,25 +1,9 @@
 #define PJ_LIB__
 #include "proj_internal.h"
-#include <projects.h>
+#include "projects.h"
 
 PROJ_HEAD(vgridshift, "Vertical grid shift");
 
-static void *freeup_msg (PJ *P, int errlev) {
-    if (0==P)
-        return 0;
-
-    if (0!=P->ctx)
-        pj_ctx_set_errno (P->ctx, errlev);
-
-    return pj_dealloc(P);
-}
-
-
-static void freeup (PJ *P) {
-    freeup_msg (P, 0);
-    return;
-}
-
 
 static XYZ forward_3d(LPZ lpz, PJ *P) {
     PJ_TRIPLET point;
@@ -74,7 +58,7 @@ PJ *PROJECTION(vgridshift) {
 
    if (!pj_param(P->ctx, P->params, "tgrids").i) {
         proj_log_error(P, "vgridshift: +grids parameter missing.");
-        return freeup_msg(P, -1);
+        return pj_default_destructor(P, PJD_ERR_NO_ARGS);
     }
 
     /* Build gridlist. P->gridlist can be empty if +grids only ask for optional grids. */
@@ -84,9 +68,7 @@ PJ *PROJECTION(vgridshift) {
     /* Was gridlist compiled properly? */
     if ( pj_ctx_get_errno(P->ctx) ) {
         proj_log_error(P, "vgridshift: could not find required grid(s).");
-        pj_dalloc(P->gridlist);
-        P->gridlist = NULL;
-        return freeup_msg(P, -38);
+        return pj_default_destructor(P, -38);
     }
 
     P->fwdobs = forward_obs;
@@ -111,16 +93,21 @@ int pj_vgridshift_selftest (void) {
     PJ *P;
     PJ_OBS expect, a, b;
     double dist;
+    int failures = 0;
 
     /* fail on purpose: +grids parameter is mandatory*/
     P = proj_create(PJ_DEFAULT_CTX, "+proj=vgridshift");
-    if (0!=P)
+    if (0!=P) {
+        proj_destroy (P);
         return 99;
+    }
 
     /* fail on purpose: open non-existing grid */
     P = proj_create(PJ_DEFAULT_CTX, "+proj=vgridshift +grids=nonexistinggrid.gtx");
-    if (0!=P)
+    if (0!=P) {
+        proj_destroy (P);
         return 999;
+    }
 
     /* Failure most likely means the grid is missing */
     P = proj_create(PJ_DEFAULT_CTX, "+proj=vgridshift +grids=egm96_15.gtx +ellps=GRS80");
@@ -136,13 +123,21 @@ int pj_vgridshift_selftest (void) {
         return 1;
 
     expect = a;
-    expect.coo.lpz.z   = -36.021305084228515625;
+    /* Appears there is a difference between the egm96_15.gtx distributed by OSGeo4W,  */
+    /* and the one from http://download.osgeo.org/proj/vdatum/egm96_15/egm96_15.gtx    */
+    /* Was: expect.coo.lpz.z   = -36.021305084228515625;  (download.osgeo.org)         */
+    /* Was: expect.coo.lpz.z   = -35.880001068115234000;  (OSGeo4W)                    */
+    /* This is annoying, but must be handled elsewhere. So for now, we check for both. */
+    expect.coo.lpz.z   = -36.021305084228516;
+    failures = 0;
     b = proj_trans_obs(P, PJ_FWD, a);
-    if (proj_xyz_dist(expect.coo.xyz, b.coo.xyz) > 1e-10)
+    if (proj_xyz_dist(expect.coo.xyz, b.coo.xyz) > 1e-4)  failures++;
+    expect.coo.lpz.z   = -35.880001068115234000;
+    if (proj_xyz_dist(expect.coo.xyz, b.coo.xyz) > 1e-4)  failures++;
+    if (failures > 1)
         return 2;
-
-
-    pj_free(P);
+    
+    proj_destroy (P);
 
     return 0;
 }