emit/__emit: Do not allow to redefine the same label

2017-12-02 19:02:17 +07:00 · 2017-12-02 19:02:17 +07:00 · 873060e7e8
commit 873060e7e8
parent 907c4b610e
1 changed files with 2 additions and 0 deletions
--- a/source/compiler/sc1.c
+++ b/source/compiler/sc1.c
@ -6561,6 +6561,8 @@ SC_FUNC void emit_parse_line(void)
      error(221,st);    /* label name shadows tagname */
    } else {
      sym=fetchlab(st);
+      if ((sym->usage & uDEFINE)!=0)
+        error(021,st);  /* symbol already defined */
      setlabel((int)sym->addr);
      sym->usage|=uDEFINE;
    } /* if */