diff --git a/fish/tilde.c b/fish/tilde.c
index 0c15d18d5..0d4ffb10c 100644
--- a/fish/tilde.c
+++ b/fish/tilde.c
@@ -39,6 +39,8 @@ static char *expand_home (char *orig, const char *append);
 static const char *find_home_for_username (const char *, size_t);
 static const char *find_home_for_current_user (void);
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wanalyzer-null-argument"
 /**
  * This is called from the script loop if we find a candidate for
  * C<~username> (tilde-expansion).
@@ -78,7 +80,10 @@ try_tilde_expansion (char *str)
   /* No match, return the original string. */
   return str;
 }
+#pragma GCC diagnostic pop
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wanalyzer-null-argument"
 /**
  * Return C<$HOME> + append string.
  */
@@ -110,6 +115,7 @@ expand_home (char *orig, const char *append)
 
   return str;
 }
+#pragma GCC diagnostic pop
 
 /**
  * Lookup C<username> (of length C<ulen>), return home directory if