Report clearer error if = is used instead of ==

snowballstem · Oct 22, 2021 · 5559db7 · 5559db7
1 parent 4ff3598
commit 5559db7
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/compiler/analyser.c b/compiler/analyser.c
@@ -1011,6 +1011,13 @@ static struct node * read_C(struct analyser * a) {
                 read_token(t);
                 int token = t->token;
                 switch (token) {
+                    case c_assign:
+                        count_error(a);
+                        fprintf(stderr, "%s:%d: Expected relational operator (did you mean '=='?)\n",
+				t->file, t->line_number);
+                        /* Assume it was == to try to avoid an error avalanche. */
+                        token = c_eq;
+                        /* FALLTHRU */
                     case c_eq:
                     case c_ne:
                     case c_gr: