From 9e56e52252edaebcd1200a79e2a70e6ac4bbb46e Mon Sep 17 00:00:00 2001
From: uwezkhan <114483941+uwezkhan@users.noreply.github.com>
Date: Wed, 29 Apr 2026 11:57:50 +0530
Subject: [PATCH] Fix integer truncation in StreamReader size calculations
 (#6601)

* Fix integer truncation in StreamReader size calculations
* improves type clarity and avoids implicit conversions by replacing C-style casts with static_cast

---------

Co-authored-by: Kim Kulling <kimkulling@users.noreply.github.com>
---
 include/assimp/StreamReader.h | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/include/assimp/StreamReader.h b/include/assimp/StreamReader.h
index 73a3fe480..363636496 100644
--- a/include/assimp/StreamReader.h
+++ b/include/assimp/StreamReader.h
@@ -182,7 +182,7 @@ public:
     // ---------------------------------------------------------------------
     /// Get the remaining stream size (to the end of the stream)
     size_t GetRemainingSize() const {
-        return (unsigned int)(mEnd - mCurrent);
+        return static_cast<size_t>(mEnd - mCurrent);
     }
 
     // ---------------------------------------------------------------------
@@ -190,7 +190,7 @@ public:
      *  return value is the remaining size of the stream if no custom
      *  read limit has been set. */
     size_t GetRemainingSizeToLimit() const {
-        return (unsigned int)(mLimit - mCurrent);
+        return static_cast<size_t>(mLimit - mCurrent);
     }
 
     // ---------------------------------------------------------------------
@@ -233,8 +233,9 @@ public:
     }
 
     /// @brief Get the current offset from the beginning of the file
+    /// @return The current offset from the beginning of the file.
     int GetCurrentPos() const {
-        return (unsigned int)(mCurrent - mBuffer);
+        return static_cast<int>(mCurrent - mBuffer);
     }
 
     void SetCurrentPos(size_t pos) {
@@ -244,10 +245,10 @@ public:
     // ---------------------------------------------------------------------
     /** Setup a temporary read limit
      *
-     *  @param limit Maximum number of bytes to be read from
+     *  @param _limit Maximum number of bytes to be read from
      *    the beginning of the file. Specifying UINT_MAX
      *    resets the limit to the original end of the stream.
-     *  Returns the previously set limit. */
+     *  @return The previously set limit. */
     unsigned int SetReadLimit(unsigned int _limit) {
         unsigned int prev = GetReadLimit();
         if (UINT_MAX == _limit) {
@@ -264,9 +265,10 @@ public:
 
     // ---------------------------------------------------------------------
     /** Get the current read limit in bytes. Reading over this limit
-     *  accidentally raises an exception.  */
+     *  accidentally raises an exception.
+     *  @return The current limit. */
     unsigned int GetReadLimit() const {
-        return (unsigned int)(mLimit - mBuffer);
+        return static_cast<unsigned int>(mLimit - mBuffer);
     }
 
     // ---------------------------------------------------------------------