From 244799f4800fd23527a7942d9af8ef42afc691ca Mon Sep 17 00:00:00 2001
From: Kevin Backhouse <kevinbackhouse@github.com>
Date: Sat, 11 Mar 2023 23:17:49 +0000
Subject: [PATCH] Convert tail-recursion to loop to avoid stack exhaustion.

---
 src/riffvideo.cpp | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/src/riffvideo.cpp b/src/riffvideo.cpp
index 86c28734..e3a8b88f 100644
--- a/src/riffvideo.cpp
+++ b/src/riffvideo.cpp
@@ -456,17 +456,14 @@ void RiffVideo::readChunk(HeaderReader& header_) {
 }
 
 void RiffVideo::decodeBlocks() {
-  HeaderReader header(io_);
-  if (equal(header.getId(), CHUNK_ID_LIST)) {
-    readList(header);
-  } else {
-    readChunk(header);
-  }
-
-  if (!io_->eof() && io_->tell() < io_->size()) {
-    decodeBlocks();
-  }
-
+  do {
+    HeaderReader header(io_);
+    if (equal(header.getId(), CHUNK_ID_LIST)) {
+      readList(header);
+    } else {
+      readChunk(header);
+    }
+  } while (!io_->eof() && io_->tell() < io_->size());
 }  // RiffVideo::decodeBlock
 
 void RiffVideo::readAviHeader() {