AP_Common: char_to_hex returns 0 on invalid char

ArduPilot · Jul 4, 2024 · 2da4b0d · 2da4b0d
1 parent 6217643
commit 2da4b0d
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/libraries/AP_Common/AP_Common.cpp b/libraries/AP_Common/AP_Common.cpp
@@ -97,10 +97,12 @@ size_t strncpy_noterm(char *dest, const char *src, size_t n)
  */
 int16_t char_to_hex(char a)
 {
-    if (a >= 'A' && a <= 'F')
+    if (a >= 'A' && a <= 'F') {
         return a - 'A' + 10;
-    else if (a >= 'a' && a <= 'f')
+    } else if (a >= 'a' && a <= 'f') {
         return a - 'a' + 10;
-    else
+    } else if (a >= '0' && a <= '9') {
         return a - '0';
+    }
+    return 0;
 }