Remove many calls to set MemoryError exceptions.

When PyString_FromStringAndSize() and _PyString_Resize() fail, they
set an exception.  There's no need to set a new exception.

diff --git a/Modules/zlibmodule.c b/Modules/zlibmodule.c
index 7a9dcf030dea93b6d1e81f7877e5d20a7acdd236..6dd8c29447ce0aa42e28cb1dc195ceb791ede216 100644 (file)
--- a/Modules/zlibmodule.c
+++ b/Modules/zlibmodule.c
@@ -145,8 +145,6 @@ PyZlib_compress(PyObject *self, PyObject *args)
     {
        PyErr_SetString(PyExc_MemoryError,
                        "Can't allocate memory to compress data");
-       free(output);
-
        return NULL;
     }
 
@@ -266,11 +264,8 @@ PyZlib_decompress(PyObject *self, PyObject *args)
     zst.avail_in = length;
     zst.avail_out = r_strlen;
 
-    if (!(result_str = PyString_FromStringAndSize(NULL, r_strlen))) {
-       PyErr_SetString(PyExc_MemoryError,
-                       "Can't allocate memory to decompress data");
+    if (!(result_str = PyString_FromStringAndSize(NULL, r_strlen)))
        return NULL;
-    }
 
     /* Past the point of no return.  From here on out, we need to make sure
        we clean up mallocs & INCREFs. */
@@ -334,8 +329,6 @@ PyZlib_decompress(PyObject *self, PyObject *args)
        case(Z_OK):
            /* need more memory */
            if (_PyString_Resize(&result_str, r_strlen << 1) == -1) {
-               PyErr_SetString(PyExc_MemoryError,
-                               "Out of memory while decompressing data");
                inflateEnd(&zst);
                result_str = NULL;
                return_error = 1;
@@ -528,11 +521,8 @@ PyZlib_objcompress(compobject *self, PyObject *args)
     if (PyString_AsStringAndSize(inputString, (char**)&input, &inplen) == -1)
        return NULL;
 
-    if (!(RetVal = PyString_FromStringAndSize(NULL, length))) {
-       PyErr_SetString(PyExc_MemoryError,
-                       "Can't allocate memory to compress data");
+    if (!(RetVal = PyString_FromStringAndSize(NULL, length)))
        return NULL;
-    }
 
     ENTER_ZLIB
 
@@ -554,8 +544,6 @@ PyZlib_objcompress(compobject *self, PyObject *args)
        so extend the output buffer and try again */
     while (err == Z_OK && self->zst.avail_out == 0) {
        if (_PyString_Resize(&RetVal, length << 1) == -1)  {
-           PyErr_SetString(PyExc_MemoryError,
-                           "Can't allocate memory to compress data");
            return_error = 1;
            break;
        }
@@ -635,11 +623,8 @@ PyZlib_objdecompress(compobject *self, PyObject *args)
     /* limit amount of data allocated to max_length */
     if (max_length && length > max_length) 
        length = max_length;
-    if (!(RetVal = PyString_FromStringAndSize(NULL, length))) {
-       PyErr_SetString(PyExc_MemoryError,
-                       "Can't allocate memory to compress data");
+    if (!(RetVal = PyString_FromStringAndSize(NULL, length)))
        return NULL;
-    }
 
     ENTER_ZLIB
     return_error = 0;
@@ -673,8 +658,6 @@ PyZlib_objdecompress(compobject *self, PyObject *args)
            length = max_length;
 
        if (_PyString_Resize(&RetVal, length) == -1) {
-           PyErr_SetString(PyExc_MemoryError,
-                           "Can't allocate memory to compress data");
            return_error = 1;
            break;
        }
@@ -709,8 +692,6 @@ PyZlib_objdecompress(compobject *self, PyObject *args)
            self->unused_data = PyString_FromStringAndSize(
                (char *)self->zst.next_in, self->zst.avail_in);
            if (self->unused_data == NULL) {
-               PyErr_SetString(PyExc_MemoryError,
-                               "Can't allocate memory to unused_data");
                Py_DECREF(RetVal);
                return_error = 1;
            }
@@ -769,11 +750,8 @@ PyZlib_flush(compobject *self, PyObject *args)
        return PyString_FromStringAndSize(NULL, 0);
     }
 
-    if (!(RetVal = PyString_FromStringAndSize(NULL, length))) {
-       PyErr_SetString(PyExc_MemoryError,
-                       "Can't allocate memory to compress data");
+    if (!(RetVal = PyString_FromStringAndSize(NULL, length)))
        return NULL;
-    }
 
     ENTER_ZLIB
   
@@ -792,8 +770,6 @@ PyZlib_flush(compobject *self, PyObject *args)
        so extend the output buffer and try again */
     while (err == Z_OK && self->zst.avail_out == 0) {
        if (_PyString_Resize(&RetVal, length << 1) == -1)  {
-           PyErr_SetString(PyExc_MemoryError,
-                           "Can't allocate memory to compress data");
            return_error = 1;
            break;
        }