patch 9.0.0211: invalid memory access when compiling :lockvar
Problem: Invalid memory access when compiling :lockvar.
Solution: Don't read past the end of the line.
diff --git a/src/vim9cmds.c b/src/vim9cmds.c
index ad32c32..35a3821 100644
--- a/src/vim9cmds.c
+++ b/src/vim9cmds.c
@@ -188,10 +188,17 @@
size_t len;
char_u *buf;
isntype_T isn = ISN_EXEC;
+ char *cmd = eap->cmdidx == CMD_lockvar ? "lockvar" : "unlockvar";
if (cctx->ctx_skip == SKIP_YES)
return OK;
+ if (*p == NUL)
+ {
+ semsg(_(e_argument_required_for_str), cmd);
+ return FAIL;
+ }
+
// Cannot use :lockvar and :unlockvar on local variables.
if (p[1] != ':')
{
@@ -223,8 +230,6 @@
ret = FAIL;
else
{
- char *cmd = eap->cmdidx == CMD_lockvar ? "lockvar" : "unlockvar";
-
if (deep < 0)
vim_snprintf((char *)buf, len, "%s! %s", cmd, p);
else