Fix get_stack()

vstinner · vstinner · commit e823658cda38 · 2025-10-07T12:16:53.000+02:00
Remove guard_size from the size
diff --git a/Python/ceval.c b/Python/ceval.c
@@ -525,9 +525,8 @@ get_stack(uintptr_t *start, size_t *size)
         err |= pthread_attr_destroy(&attr);
     }
     if (err == 0) {
-        uintptr_t base = (uintptr_t)stack_addr + guard_size;
-        *start = base;
-        *size = (base + stack_size) - *start;
+        *start = (uintptr_t)stack_addr + guard_size;
+        *size = stack_size - guard_size;
     }
     else
 #  endif

Original file line number	Diff line number	Diff line change
`@@ -525,9 +525,8 @@ get_stack(uintptr_t start, size_t size)`
`525`	`525`	`err \|= pthread_attr_destroy(&attr);`
`526`	`526`	`}`
`527`	`527`	`if (err == 0) {`
`528`		`- uintptr_t base = (uintptr_t)stack_addr + guard_size;`
`529`		`- *start = base;`
`530`		`- size = (base + stack_size) - start;`
	`528`	`+ *start = (uintptr_t)stack_addr + guard_size;`
	`529`	`+ *size = stack_size - guard_size;`
`531`	`530`	`}`
`532`	`531`	`else`
`533`	`532`	`# endif`