From 09ff16760eac2d6f03e93bd7d50892a6d536ed1b Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Sat, 17 Dec 2022 12:50:41 +0100
Subject: prog: don't mutate size of compressed images

If we do, then our code will fail/crash on decompression.
---
 prog/size.go | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'prog')

diff --git a/prog/size.go b/prog/size.go
index 1a0b9dcb6..11f1ccaf8 100644
--- a/prog/size.go
+++ b/prog/size.go
@@ -172,6 +172,12 @@ func (r *randGen) mutateSize(arg *ConstArg, parent []Arg, fields []Field) bool {
 					switch targetType := inner.Type().(type) {
 					case *VmaType:
 						return false
+					case *BufferType:
+						// Don't mutate size of compressed images.
+						// If we do, then our code will fail/crash on decompression.
+						if targetType.Kind == BufferCompressed {
+							return false
+						}
 					case *ArrayType:
 						if targetType.Elem.Varlen() {
 							return false
-- 
cgit mrf-deployment