Fix crash in String when using nullptr (espressif#10971)

Fixes: espressif#10971
TD-er · Feb 15, 2025 · ee94c5c · ee94c5c
1 parent a7907cd
commit ee94c5c
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/cores/esp32/WString.cpp b/cores/esp32/WString.cpp
@@ -290,7 +290,8 @@ String &String::operator=(StringSumHelper &&rval) {
 #endif
 
 String &String::operator=(const char *cstr) {
-  return copy(cstr, strlen(cstr));
+  const uint32_t length = cstr ? strlen(cstr) : 0u;
+  return copy(cstr, length);
 }
 
 /*********************************************/