From 8cb180d081ccd2991ff7b9c35ec318945a887031 Mon Sep 17 00:00:00 2001
From: Rob Tillaart <rob.tillaart@gmail.com>
Date: Wed, 9 Oct 2024 09:38:39 +0200
Subject: [PATCH] Fix #74, memory leak in verifyBlock() (#75)

- Fix #74, memory leak in setBlockVerify()
---
 CHANGELOG.md       | 6 +++++-
 I2C_eeprom.cpp     | 8 ++++++--
 I2C_eeprom.h       | 4 ++--
 README.md          | 9 +++++----
 library.json       | 2 +-
 library.properties | 2 +-
 6 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a44ea25..85b7719 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,10 +6,14 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
+## [1.9.0] - 2024-10-09
+- Fix #74, memory leak in setBlockVerify() - kudos to cmichailidis
+
+----
+
 ## [1.8.5] - 2024-04-22
 - Fix #72, force requestFrom parameters to use int type
 
-
 ## [1.8.4] - 2024-04-20
 - Fix #70, increase length internal buffer.
 - add compile time flag **EN_AUTO_WRITE_PROTECT** (thanks to microfoundry)
diff --git a/I2C_eeprom.cpp b/I2C_eeprom.cpp
index fba5dd1..df1e261 100644
--- a/I2C_eeprom.cpp
+++ b/I2C_eeprom.cpp
@@ -1,7 +1,7 @@
 //
 //    FILE: I2C_eeprom.cpp
 //  AUTHOR: Rob Tillaart
-// VERSION: 1.8.5
+// VERSION: 1.9.0
 // PURPOSE: Arduino Library for external I2C EEPROM 24LC256 et al.
 //     URL: https://github.com/RobTillaart/I2C_EEPROM
 
@@ -235,7 +235,11 @@ bool I2C_eeprom::setBlockVerify(const uint16_t memoryAddress, const uint8_t valu
   if (setBlock(memoryAddress, value, length) != 0) return false;
   uint8_t * data = (uint8_t *) malloc(length);
   if (data == NULL) return false;
-  if (readBlock(memoryAddress, data, length) != length) return false;
+  if (readBlock(memoryAddress, data, length) != length)
+  {
+    free(data);
+    return false;
+  }
   for (uint16_t i = 0; i < length; i++)
   {
     if (data[i] != value)
diff --git a/I2C_eeprom.h b/I2C_eeprom.h
index 48009bf..f39a062 100644
--- a/I2C_eeprom.h
+++ b/I2C_eeprom.h
@@ -2,7 +2,7 @@
 //
 //    FILE: I2C_eeprom.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 1.8.5
+// VERSION: 1.9.0
 // PURPOSE: Arduino Library for external I2C EEPROM 24LC256 et al.
 //     URL: https://github.com/RobTillaart/I2C_EEPROM
 
@@ -11,7 +11,7 @@
 #include "Wire.h"
 
 
-#define I2C_EEPROM_VERSION          (F("1.8.5"))
+#define I2C_EEPROM_VERSION          (F("1.9.0"))
 
 #define I2C_DEVICESIZE_24LC512      65536
 #define I2C_DEVICESIZE_24LC256      32768
diff --git a/README.md b/README.md
index e60892a..0198e79 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ Not supported is the identification page functions.
 The **I2C_eeprom_cyclic_store** interface is documented [here](README_cyclic_store.md)
 
 
-#### RP2040
+### RP2040
 
 There are at least two boards modules for the RP2040 that use a different Wire libraries. 
 One from "Earle F. Philhower" and an "MBED" one. See issues #53 and #55 for details.
@@ -36,7 +36,9 @@ to solve the issue #53 while being backwards compatible.
 If a better solution is found, it will be implemented.
 
 
-#### Breaking change
+### Breaking change
+
+Version 1.9.0 fixed a memory leak in **verifyBlock()**.
 
 Version 1.8.0 introduced a breaking change.
 You cannot set the pins in **begin()** any more.
@@ -45,7 +47,7 @@ The user has to call **Wire.begin()** and can optionally set the Wire pins
 before calling **I2C_eeprom.begin()**.
 
 
-#### Links
+### Related
 
 - https://github.com/RobTillaart/I2C_24LC1025
 
@@ -137,7 +139,6 @@ Same as write and update functions above. Returns true if successful, false indi
 Returns true is buffer equals memoryAddres for length bytes.
 
 
-
 ### Other
 
 - **uint32_t getDeviceSize()** idem
diff --git a/library.json b/library.json
index f567d7b..8d0857c 100644
--- a/library.json
+++ b/library.json
@@ -15,7 +15,7 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/I2C_EEPROM.git"
   },
-  "version": "1.8.5",
+  "version": "1.9.0",
   "license": "MIT",
   "frameworks": "*",
   "platforms": "*",
diff --git a/library.properties b/library.properties
index 5aa984f..54b4579 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=I2C_EEPROM
-version=1.8.5
+version=1.9.0
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
 sentence=Library for I2C EEPROMS