Issue #25923: Added the const qualifier to static constant arrays.
diff --git a/Python/importdl.c b/Python/importdl.c
index 1aa585d..ac03289 100644
--- a/Python/importdl.c
+++ b/Python/importdl.c
@@ -23,8 +23,8 @@
const char *pathname, FILE *fp);
#endif
-static const char *ascii_only_prefix = "PyInit";
-static const char *nonascii_prefix = "PyInitU";
+static const char * const ascii_only_prefix = "PyInit";
+static const char * const nonascii_prefix = "PyInitU";
/* Get the variable part of a module's export symbol name.
* Returns a bytes instance. For non-ASCII-named modules, the name is