gh-143108: Don't instrument some faulthandler related functions for TSan (#143450)

colesbury · web-flow · commit 7a572d9f21dd · 2026-01-05T22:13:29.000+01:00
diff --git a/Python/traceback.c b/Python/traceback.c
@@ -1186,7 +1186,7 @@ _Py_DumpTraceback(int fd, PyThreadState *tstate)
 
 
 // Write the thread name
-static void
+static void _Py_NO_SANITIZE_THREAD
 write_thread_name(int fd, PyThreadState *tstate)
 {
 #ifndef MS_WINDOWS
@@ -1239,7 +1239,7 @@ write_thread_name(int fd, PyThreadState *tstate)
 
    This function is signal safe (except on Windows). */
 
-static void
+static void _Py_NO_SANITIZE_THREAD
 write_thread_id(int fd, PyThreadState *tstate, int is_current)
 {
     if (is_current)

Original file line number	Diff line number	Diff line change
`@@ -1186,7 +1186,7 @@ _Py_DumpTraceback(int fd, PyThreadState *tstate)`
`1186`	`1186`
`1187`	`1187`
`1188`	`1188`	`// Write the thread name`
`1189`		`-static void`
	`1189`	`+static void _Py_NO_SANITIZE_THREAD`
`1190`	`1190`	`write_thread_name(int fd, PyThreadState *tstate)`
`1191`	`1191`	`{`
`1192`	`1192`	`#ifndef MS_WINDOWS`
`@@ -1239,7 +1239,7 @@ write_thread_name(int fd, PyThreadState *tstate)`
`1239`	`1239`
`1240`	`1240`	`This function is signal safe (except on Windows). */`
`1241`	`1241`
`1242`		`-static void`
	`1242`	`+static void _Py_NO_SANITIZE_THREAD`
`1243`	`1243`	`write_thread_id(int fd, PyThreadState *tstate, int is_current)`
`1244`	`1244`	`{`
`1245`	`1245`	`if (is_current)`