From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 17 Sep 2021 23:18:53 +0000 (+0300)
Subject: Fix an apparent logic bug in ProgramData
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=7ab13563ec79b45a09f03da73acb15b39e192df9

Fix an apparent logic bug in ProgramData

Deleting the blocks but leaving the pointers seems like a recipe for
disaster.  This hails from all the way back in 5ae4b00.
---

diff --git a/source/render/programdata.cpp b/source/render/programdata.cpp
index e8e30e63..915444d8 100644
--- a/source/render/programdata.cpp
+++ b/source/render/programdata.cpp
@@ -67,6 +67,7 @@ ProgramData &ProgramData::operator=(const ProgramData &other)
 
 	for(SharedBlock &b: blocks)
 		delete b.block;
+	blocks.clear();
 	programs.clear();
 
 	last_buffer_block = 0;