scc

commit 6c203246f0b7e3fa9ac8748b14e50e4381928d1a
parent 9ab6169607b9f33078f602fba25f3fa8de6aa762
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Thu, 26 Dec 2024 22:05:39 +0100

cc2: Fix prog when deleting at the beginning

Prog was assigned to NULL but we have to use the value of
next, otherwise we lose the remaining nodes.

Diffstat:
M
src/cmd/scc-cc/cc2/cc2.h
 | 
1
+
M
src/cmd/scc-cc/cc2/code.c
 | 
3
+--

2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/cmd/scc-cc/cc2/cc2.h b/src/cmd/scc-cc/cc2/cc2.h
@@ -237,6 +237,7 @@ extern Node *label2node(Node *np, Symbol *sym);
 extern Node *constnode(Node *np, TUINT n, Type *tp);
 extern Node *tmpnode(Type *);
 extern Node *idxnode(Node *, long);
+extern void delcode(void);
 extern Symbol *newlabel(void);
 extern void pprint(char *s);
 extern void deftype(Type *);
diff --git a/src/cmd/scc-cc/cc2/code.c b/src/cmd/scc-cc/cc2/code.c
@@ -211,8 +211,7 @@ delcode(void)
 
         free(pc);
         if (!prev) {
-                pc = next;
-                prog = NULL;
+                prog = pc = next;
         } else {
                 pc = prev;
                 prev->next = next;