fix examples

2 files changed, 3 insertions, 3 deletions

diff --git a/example_png_info.cpp b/example_png_info.cpp
index c6df5c1..afd845c 100644
--- a/example_png_info.cpp
+++ b/example_png_info.cpp
@@ -232,7 +232,7 @@ void displayFilterTypes(const std::vector<unsigned char>& buffer)
     {
       const unsigned char* cdata = lodepng_chunk_data_const(chunk);
       unsigned clength = lodepng_chunk_length(chunk);
-      if(chunk + clength >= end) {
+      if(chunk + clength + 12 > end) {
         std::cout << "invalid chunk length" << std::endl;
         return;
       }
diff --git a/lodepng_util.cpp b/lodepng_util.cpp
index ed054f0..37a6e73 100644
--- a/lodepng_util.cpp
+++ b/lodepng_util.cpp
@@ -52,7 +52,7 @@ unsigned getChunkInfo(std::vector<std::string>& names, std::vector<size_t>& size
     if(std::string(type).size() != 4) return 1;
 
     unsigned length = lodepng_chunk_length(chunk);
-    if(chunk + length >= end) return 1;
+    if(chunk + length + 12 > end) return 1;
     names.push_back(type);
     sizes.push_back(length);
 
@@ -182,7 +182,7 @@ unsigned getFilterTypesInterlaced(std::vector<std::vector<unsigned char> >& filt
     {
       const unsigned char* cdata = lodepng_chunk_data_const(chunk);
       unsigned clength = lodepng_chunk_length(chunk);
-      if(chunk + clength >= end) return 1; // corrupt chunk length
+      if(chunk + clength + 12 > end) return 1; // corrupt chunk length
 
       for(unsigned i = 0; i < clength; i++)
       {