git.y1.nz

commit 58035018aa4593abdf07a70148faae9836bf2590
parent cc495c2602ec2f0edc3ef2a22507bed5bbfd097d
Author: Lior Halphon <LIJI32@gmail.com>
Date:   Fri, 14 Nov 2025 20:46:34 +0200

Make sure we don't crash on slightly-off-standard libc implementations

Diffstat:
M
Core/gb.c
8
+++++++-

1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/Core/gb.c b/Core/gb.c
@@ -58,7 +58,13 @@ static char *default_input_callback(GB_gameboy_t *gb)
 
     if (getline(&expression, &size, stdin) == -1) {
         /* The user doesn't have STDIN or used ^D. We make sure the program keeps running. */
-        free(expression);
+        
+        /* Some implementations may allocate expressions even on getline failure,
+           and other implementations may crash on free(NULL). Free expression if
+           it was allocated. */
+        if (expression) {
+            free(expression);
+        }
         GB_set_async_input_callback(gb, NULL); /* Disable async input */
         return strdup("c");
     }

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