[Bf-blender-cvs] [5e7a21a5f54] master: Fix T55115: crash when iterating SmokeDomainSettings color_grid property through python

[Philipp Oeser]

Commit: 5e7a21a5f549f5db73385820cafcd8f2bb9c91da
Author: Philipp Oeser
Date:   Fri May 18 12:58:46 2018 +0200
Branches: master
https://developer.blender.org/rB5e7a21a5f549f5db73385820cafcd8f2bb9c91da

Fix T55115: crash when iterating SmokeDomainSettings color_grid property
through python

===================================================================

M	source/blender/makesrna/intern/rna_smoke.c

===================================================================

diff --git a/source/blender/makesrna/intern/rna_smoke.c b/source/blender/makesrna/intern/rna_smoke.c
index 38c297def32..b860ad303f0 100644
--- a/source/blender/makesrna/intern/rna_smoke.c
+++ b/source/blender/makesrna/intern/rna_smoke.c
@@ -286,20 +286,27 @@ static void rna_SmokeModifier_color_grid_get(PointerRNA *ptr, float *values)
 {
 #ifdef WITH_SMOKE
 	SmokeDomainSettings *sds = (SmokeDomainSettings *)ptr->data;
+	int length[RNA_MAX_ARRAY_DIMENSION];
+	int size = rna_SmokeModifier_grid_get_length(ptr, length);
 
 	BLI_rw_mutex_lock(sds->fluid_mutex, THREAD_LOCK_READ);
 
-	if (sds->flags & MOD_SMOKE_HIGHRES) {
-		if (smoke_turbulence_has_colors(sds->wt))
-			smoke_turbulence_get_rgba(sds->wt, values, 0);
-		else
-			smoke_turbulence_get_rgba_from_density(sds->wt, sds->active_color, values, 0);
+	if (!sds->fluid) {
+		memset(values, 0, size * sizeof(float));
 	}
 	else {
-		if (smoke_has_colors(sds->fluid))
-			smoke_get_rgba(sds->fluid, values, 0);
-		else
-			smoke_get_rgba_from_density(sds->fluid, sds->active_color, values, 0);
+		if (sds->flags & MOD_SMOKE_HIGHRES) {
+			if (smoke_turbulence_has_colors(sds->wt))
+				smoke_turbulence_get_rgba(sds->wt, values, 0);
+			else
+				smoke_turbulence_get_rgba_from_density(sds->wt, sds->active_color, values, 0);
+		}
+		else {
+			if (smoke_has_colors(sds->fluid))
+				smoke_get_rgba(sds->fluid, values, 0);
+			else
+				smoke_get_rgba_from_density(sds->fluid, sds->active_color, values, 0);
+		}
 	}
 
 	BLI_rw_mutex_unlock(sds->fluid_mutex);