jcs.org
jcs's openbsd hax
openbsd
Do not permit an empty list between "while" and "do". This avoids a cpu loop for "while do done" and is consistent with the behavior of AT&T ksh and most other shells. OK jca@ halex@
+3
-1
+3
-1
bin/ksh/syn.c
+3
-1
bin/ksh/syn.c
···
1
-
/* $OpenBSD: syn.c,v 1.39 2018/04/24 08:25:16 kn Exp $ */
1
+
/* $OpenBSD: syn.c,v 1.40 2021/07/05 13:41:46 millert Exp $ */
2
2
3
3
/*
4
4
* shell parser (C version)
···
331
331
nesting_push(&old_nesting, c);
332
332
t = newtp((c == WHILE) ? TWHILE : TUNTIL);
333
333
t->left = c_list(true);
334
+
if (t->left == NULL)
335
+
syntaxerr(NULL);
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336
t->right = dogroup();
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337
nesting_pop(&old_nesting);
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338
break;