Added bounds checking to unsigned int

UCSD-E4E · Feb 11, 2025 · 365a1ec · 365a1ec
1 parent 94bb762
commit 365a1ec
Showing 1 changed file with 7 additions and 4 deletions.
diff --git a/src/cli/conio.cpp b/src/cli/conio.cpp
@@ -128,10 +128,13 @@ extern "C"
                 switch (userInput)
                 {
                 case '\b':
-                    i--;
-                    SF_OSAL_putch('\b');
-                    SF_OSAL_putch(' ');
-                    SF_OSAL_putch('\b');
+                    if (i > 0) 
+                    {
+                        i--;
+                        SF_OSAL_putch('\b');
+                        SF_OSAL_putch(' ');
+                        SF_OSAL_putch('\b');
+                    }
                     break;
                 default:
                     buffer[i++] = userInput;