Fixup sys._getframe

markshannon · markshannon · commit 7c0876ca269d · 2022-05-27T14:57:37.000+01:00
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
@@ -1776,10 +1776,15 @@ sys__getframe_impl(PyObject *module, int depth)
         return NULL;
     }
 
-    while (depth > 0 && frame != NULL) {
-        frame = frame->previous;
-        if (!frame->is_artificial) {
-            --depth;
+    if (frame != NULL) {
+        while (depth > 0) {
+            frame = frame->previous;
+            if (frame == NULL) {
+                break;
+            }
+            if (!frame->is_artificial) {
+                --depth;
+            }
         }
     }
     if (frame == NULL) {

Original file line number	Diff line number	Diff line change
`@@ -1776,10 +1776,15 @@ sys__getframe_impl(PyObject *module, int depth)`
`1776`	`1776`	`return NULL;`
`1777`	`1777`	`}`
`1778`	`1778`
`1779`		`- while (depth > 0 && frame != NULL) {`
`1780`		`- frame = frame->previous;`
`1781`		`- if (!frame->is_artificial) {`
`1782`		`- --depth;`
	`1779`	`+ if (frame != NULL) {`
	`1780`	`+ while (depth > 0) {`
	`1781`	`+ frame = frame->previous;`
	`1782`	`+ if (frame == NULL) {`
	`1783`	`+ break;`
	`1784`	`+ }`
	`1785`	`+ if (!frame->is_artificial) {`
	`1786`	`+ --depth;`
	`1787`	`+ }`
`1783`	`1788`	`}`
`1784`	`1789`	`}`
`1785`	`1790`	`if (frame == NULL) {`