[Python-checkins] Fix compiler warning for misleading guarding in the tkinter (GH-26244)
pablogsal
webhook-mailer at python.org
Wed May 19 14:10:29 EDT 2021
https://github.com/python/cpython/commit/95d04710c5fb0df5393b5add2c5c2de2412673eb
commit: 95d04710c5fb0df5393b5add2c5c2de2412673eb
branch: main
author: Pablo Galindo <Pablogsal at gmail.com>
committer: pablogsal <Pablogsal at gmail.com>
date: 2021-05-19T19:10:23+01:00
summary:
Fix compiler warning for misleading guarding in the tkinter (GH-26244)
The newest gcc emmits this warning:
```
/Modules/_tkinter.c:272:9: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
272 | if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); tcl_tstate = tstate; }
| ^~
/Modules/_tkinter.c:2869:5: note: in expansion of macro ‘LEAVE_PYTHON’
2869 | LEAVE_PYTHON
| ^~~~~~~~~~~~
/Modules/_tkinter.c:243:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
243 | (*(PyThreadState**)Tcl_GetThreadData(&state_key, sizeof(PyThreadState*)))
| ^
/Modules/_tkinter.c:272:57: note: in expansion of macro ‘tcl_tstate’
272 | if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); tcl_tstate = tstate; }
| ^~~~~~~~~~
/Modules/_tkinter.c:2869:5: note: in expansion of macro ‘LEAVE_PYTHON’
2869 | LEAVE_PYTHON
```
that's because the macro packs together two statements at the same level
as the "if". The warning is misleading but is very noisy so it makes
sense to fix it.
files:
M Modules/_tkinter.c
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index 3a0e5def0cf3c..14101d9e3951c 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -246,12 +246,15 @@ static PyThreadState *tcl_tstate = NULL;
#endif
#define ENTER_TCL \
- { PyThreadState *tstate = PyThreadState_Get(); Py_BEGIN_ALLOW_THREADS \
- if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); tcl_tstate = tstate;
+ { PyThreadState *tstate = PyThreadState_Get(); \
+ Py_BEGIN_ALLOW_THREADS \
+ if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); \
+ tcl_tstate = tstate;
#define LEAVE_TCL \
tcl_tstate = NULL; \
- if(tcl_lock)PyThread_release_lock(tcl_lock); Py_END_ALLOW_THREADS}
+ if(tcl_lock)PyThread_release_lock(tcl_lock); \
+ Py_END_ALLOW_THREADS}
#define ENTER_OVERLAP \
Py_END_ALLOW_THREADS
@@ -261,12 +264,14 @@ static PyThreadState *tcl_tstate = NULL;
#define ENTER_PYTHON \
{ PyThreadState *tstate = tcl_tstate; tcl_tstate = NULL; \
- if(tcl_lock) \
- PyThread_release_lock(tcl_lock); PyEval_RestoreThread((tstate)); }
+ if(tcl_lock) \
+ PyThread_release_lock(tcl_lock); \
+ PyEval_RestoreThread((tstate)); }
#define LEAVE_PYTHON \
{ PyThreadState *tstate = PyEval_SaveThread(); \
- if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); tcl_tstate = tstate; }
+ if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); \
+ tcl_tstate = tstate; }
#define CHECK_TCL_APPARTMENT \
if (((TkappObject *)self)->threaded && \
More information about the Python-checkins
mailing list