Index: Python/getargs.c
===================================================================
--- Python/getargs.c	(révision 81590)
+++ Python/getargs.c	(copie de travail)
@@ -1375,6 +1375,10 @@
             return converterr(
                 "bytes or read-only character buffer",
                 arg, msgbuf, bufsize);
+        if (pb->bf_releasebuffer != NULL)
+            return converterr(
+                "string or pinned buffer",
+                arg, msgbuf, bufsize);
 
         if (PyObject_GetBuffer(arg, &view, PyBUF_SIMPLE) != 0)
             return converterr("string or single-segment read-only buffer",
@@ -1382,11 +1386,6 @@
 
         count = view.len;
         *p = view.buf;
-        if (pb->bf_releasebuffer)
-            return converterr(
-                "string or pinned buffer",
-                arg, msgbuf, bufsize);
-
         PyBuffer_Release(&view);
 
         if (count < 0)
@@ -1451,6 +1450,7 @@
             return -1;
         }
         if (!PyBuffer_IsContiguous(view, 'C')) {
+            PyBuffer_Release(view);
             *errmsg = "contiguous buffer";
             return -1;
         }