On memory error, dump the memory block traceback

Issue #26564: _PyObject_DebugDumpAddress() now dumps the traceback where a
memory block was allocated on memory block. Use the tracemalloc module to get
the traceback.

1 files changed, 9 insertions, 0 deletions

diff --git a/Objects/obmalloc.c b/Objects/obmalloc.c
index f526b1ff20..8812f592b6 100644
--- a/Objects/obmalloc.c
+++ b/Objects/obmalloc.c
@@ -1,5 +1,10 @@
 #include "Python.h"
 
+
+/* Defined in tracemalloc.c */
+extern void _PyMem_DumpTraceback(int fd, const void *ptr);
+
+
 /* Python's malloc wrappers (see pymem.h) */
 
 /*
@@ -2202,6 +2207,10 @@ _PyObject_DebugDumpAddress(const void *p)
         }
         fputc('\n', stderr);
     }
+    fputc('\n', stderr);
+
+    fflush(stderr);
+    _PyMem_DumpTraceback(fileno(stderr), p);
 }