Do not allow to redefine the same label

2017-12-02 19:08:31 +07:00 · 2017-12-02 19:08:31 +07:00 · 401b29f464
commit 401b29f464
parent 735291fd64
1 changed files with 2 additions and 0 deletions
--- a/source/compiler/sc1.c
+++ b/source/compiler/sc1.c
@ -5820,6 +5820,8 @@ static void dolabel(void)
  if (find_constval(&tagname_tab,st,0)!=NULL)
    error(221,st);      /* label name shadows tagname */
  sym=fetchlab(st);
+  if ((sym->usage & uDEFINE)!=0)
+    error(21,st);       /* symbol already defined */
  setlabel((int)sym->addr);
  /* since one can jump around variable declarations or out of compound
   * blocks, the stack must be manually adjusted