Fix "NoneType object is not callable" exception when using a tracing function...

Fix "NoneType object is not callable" exception when using a tracing function that returns None (#1769) CPython uses the return value of tracing function to assign it to frame.f_trace field and then it uses it for the frame instead of tstate.c_tracefunc. If it is None, the context shouldn't be traced line by line.

Fix "NoneType object is not callable" exception when using a tracing function...
Fix "NoneType object is not callable" exception when using a tracing function that returns None (#1769) CPython uses the return value of tracing function to assign it to frame.f_trace field and then it uses it for the frame instead of tstate.c_tracefunc. If it is None, the context shouldn't be traced line by line.
dfc47cd4 · Dmitry Trofimov · a2db27bb · dfc47cd4
Commit dfc47cd4 authored Jul 16, 2017 by Dmitry Trofimov
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Showing with 3 additions and 3 deletions

Cython/Utility/Profile.c Cython/Utility/Profile.c +3 -3

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--- a/Cython/Utility/Profile.c
+++ b/Cython/Utility/Profile.c
@@ -198,7 +198,7 @@
              PyThreadState *tstate;                                                       \
              PyGILState_STATE state = PyGILState_Ensure();                                \
              tstate = PyThreadState_GET();                                                \
-              if (unlikely(tstate->use_tracing && tstate->c_tracefunc)) {                  \
+              if (unlikely(tstate->use_tracing && __pyx_frame->f_trace != Py_None)) {      \
                  ret = __Pyx_call_line_trace_func(tstate, $frame_cname, lineno);          \
              }                                                                            \
              PyGILState_Release(state);                                                   \
@@ -206,7 +206,7 @@
          }                                                                                \
      } else {                                                                             \
          PyThreadState* tstate = PyThreadState_GET();                                     \
-          if (unlikely(tstate->use_tracing && tstate->c_tracefunc)) {                      \
+          if (unlikely(tstate->use_tracing && __pyx_frame->f_trace != Py_None)) {          \
              int ret = __Pyx_call_line_trace_func(tstate, $frame_cname, lineno);          \
              if (unlikely(ret)) goto_error;                                               \
          }                                                                                \
@@ -216,7 +216,7 @@
  #define __Pyx_TraceLine(lineno, nogil, goto_error)                                       \
  if (likely(!__Pyx_use_tracing)); else {                                                  \
      PyThreadState* tstate = PyThreadState_GET();                                         \
-      if (unlikely(tstate->use_tracing && tstate->c_tracefunc)) {                          \
+      if (unlikely(tstate->use_tracing && __pyx_frame->f_trace != Py_None)) {              \
          int ret = __Pyx_call_line_trace_func(tstate, $frame_cname, lineno);              \
          if (unlikely(ret)) goto_error;                                                   \
      }                                                                                    \