From: tkorvola <Timo.Korvola@vtt.fi>
Date: Tue, 7 Feb 2017 11:39:18 +0000 (+0200)
Subject: Plug leaks from PySequence_GetItem.
X-Git-Tag: v1.31.0~1
X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fpython.git;a=commitdiff_plain;h=843f99efcf673dfd4937db0f2ed1c973880e876b

Plug leaks from PySequence_GetItem.

One needs to be careful and RTFM: PySequence_GetItem returns a new
reference but, e.g., PyDict_GetItem does not.

Change-Id: I93f08163a2bbf66da2966044c7bfc7abcd140bbd
---

diff --git a/org.simantics.pythonlink.win32.x86_64/jnipython.dll b/org.simantics.pythonlink.win32.x86_64/jnipython.dll
index bb0a05a..c2f62cb 100644
Binary files a/org.simantics.pythonlink.win32.x86_64/jnipython.dll and b/org.simantics.pythonlink.win32.x86_64/jnipython.dll differ
diff --git a/org.simantics.pythonlink.win32.x86_64/src/sclpy.c b/org.simantics.pythonlink.win32.x86_64/src/sclpy.c
index 1592a2f..caed56d 100644
--- a/org.simantics.pythonlink.win32.x86_64/src/sclpy.c
+++ b/org.simantics.pythonlink.win32.x86_64/src/sclpy.c
@@ -690,9 +690,11 @@ jobjectArray pythonSequenceAsStringArray(JNIEnv *env, PyObject *seq) {
 		PyObject *item = PySequence_GetItem(seq, i);
 		if (PyUnicode_Check(item)) {
 			jstring value = pythonStringAsJavaString(env, item);
+			Py_DECREF(item);
 			(*env)->SetObjectArrayElement(env, array, i, value);
 		}
 		else {
+			Py_DECREF(item);
 			throwPythonException(env, "List item not a string");
 			return NULL;
 		}
@@ -711,10 +713,12 @@ jdoubleArray pythonSequenceAsDoubleArray(JNIEnv *env, PyObject *seq) {
 	for (i = 0; i < jlen; i++) {
 		PyObject *item = PySequence_GetItem(seq, i);
 		if (PyFloat_Check(item)) {
-			double value = PyFloat_AsDouble(item);
+			jdouble value = PyFloat_AsDouble(item);
+			Py_DECREF(item);
 			(*env)->SetDoubleArrayRegion(env, array, i, 1, &value);
 		}
 		else {
+			Py_DECREF(item);
 			throwPythonException(env, "List item not a floating point value");
 			return NULL;
 		}
@@ -754,6 +758,7 @@ jobjectArray pythonSequenceAsObjectArray(JNIEnv *env, PyObject *seq) {
 	for (i = 0; i < jlen; i++) {
 		PyObject *item = PySequence_GetItem(seq, i);
 		jobject object = pythonObjectAsObject(env, item);
+		Py_DECREF(item);
 		(*env)->SetObjectArrayElement(env, array, i, object);
 	}
 
@@ -771,9 +776,11 @@ jbooleanArray pythonSequenceAsBooleanArray(JNIEnv *env, PyObject *seq) {
 		PyObject *item = PySequence_GetItem(seq, i);
 		if (PyBool_Check(item)) {
 			jboolean value = item == Py_True;
+			Py_DECREF(item);
 			(*env)->SetBooleanArrayRegion(env, array, i, 1, &value);
 		}
 		else {
+			Py_DECREF(item);
 			throwPythonException(env, "List item not a boolean");
 			return NULL;
 		}
@@ -793,9 +800,11 @@ jintArray pythonSequenceAsIntegerArray(JNIEnv *env, PyObject *seq) {
 		PyObject *item = PySequence_GetItem(seq, i);
 		if (PyLong_Check(item)) {
 			jint value = PyLong_AsLong(item);
+			Py_DECREF(item);
 			(*env)->SetIntArrayRegion(env, array, i, 1, &value);
 		}
 		else {
+			Py_DECREF(item);
 			throwPythonException(env, "List item not an integer");
 			return NULL;
 		}
@@ -815,9 +824,11 @@ jlongArray pythonSequenceAsLongArray(JNIEnv *env, PyObject *seq) {
 		PyObject *item = PySequence_GetItem(seq, i);
 		if (PyLong_Check(item)) {
 			jlong value = PyLong_AsLongLong(item);
+			Py_DECREF(item);
 			(*env)->SetLongArrayRegion(env, array, i, 1, &value);
 		}
 		else {
+			Py_DECREF(item);
 			throwPythonException(env, "List item not an integer");
 			return NULL;
 		}