From b1bcd1f19f5b0edb407a1cf92496fdff5f1b3931 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Fri, 8 Nov 2019 21:02:08 +0100
Subject: Safer control of memory allocation of aux_bitmap member of FLView

---
 src/Fl_cocoa.mm | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/Fl_cocoa.mm b/src/Fl_cocoa.mm
index 9a66a3479..df7d617bf 100644
--- a/src/Fl_cocoa.mm
+++ b/src/Fl_cocoa.mm
@@ -2202,14 +2202,19 @@ static FLTextInputContext* fltextinputcontext_instance = nil;
 }
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_14
 - (void)create_aux_bitmap:(CGContextRef)gc retina:(BOOL)r {
+  CGColorSpaceRef cspace = CGBitmapContextGetColorSpace(gc);
+  CFRetain(cspace);
   aux_bitmap = CGBitmapContextCreate(NULL, CGBitmapContextGetWidth(gc), CGBitmapContextGetHeight(gc),
                                      CGBitmapContextGetBitsPerComponent(gc), CGBitmapContextGetBytesPerRow(gc),
-                                     CGBitmapContextGetColorSpace(gc), CGBitmapContextGetBitmapInfo(gc));
+                                     cspace, CGBitmapContextGetBitmapInfo(gc));
   if (r) CGContextScaleCTM(aux_bitmap, 2, 2);
 }
 - (void)reset_aux_bitmap {
-  CGContextRelease(aux_bitmap);
-  aux_bitmap = NULL;
+  if (aux_bitmap) {
+    CFRelease(CGBitmapContextGetColorSpace(aux_bitmap));
+    CFRelease(aux_bitmap);
+    aux_bitmap = NULL;
+  }
 }
 #endif
 - (BOOL)process_keydown:(NSEvent*)theEvent
-- 
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