From 434725cc4cbbadafc82954178f55864741455cdb Mon Sep 17 00:00:00 2001 From: Bram Moolenaar Date: Fri, 6 May 2022 11:27:52 +0100 Subject: patch 8.2.4880: Vim9: misplaced elseif causes invalid memory access Problem: Vim9: misplaced elseif causes invalid memory access. Solution: Check cs_idx not to be negative. --- src/ex_eval.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'src/ex_eval.c') diff --git a/src/ex_eval.c b/src/ex_eval.c index 7b4ac1750d..f3e2ca28cf 100644 --- a/src/ex_eval.c +++ b/src/ex_eval.c @@ -1124,10 +1124,13 @@ ex_else(exarg_T *eap) skip = TRUE; } - // Variables declared in the previous block can no longer be - // used. Needs to be done before setting "cs_flags". - leave_block(cstack); - enter_block(cstack); + if (cstack->cs_idx >= 0) + { + // Variables declared in the previous block can no longer be + // used. Needs to be done before setting "cs_flags". + leave_block(cstack); + enter_block(cstack); + } // if skipping or the ":if" was TRUE, reset ACTIVE, otherwise set it if (skip || cstack->cs_flags[cstack->cs_idx] & CSF_TRUE) -- cgit v1.2.3