# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1638306004 -3600
# Node ID f209f28ad8980ea8b34cd5fc62cc2d9f8d369a7f
# Parent  f1740ebe4834dc89d63584716c820b178462700f
patch 8.2.3707: Vim9: constant expression of elseif not recognized

Commit: https://github.com/vim/vim/commit/90770b746ea2e72954c536d8acf41d241ca2f37e
Author: Bram Moolenaar <Bram@vim.org>
Date:   Tue Nov 30 20:57:38 2021 +0000

    patch 8.2.3707: Vim9: constant expression of elseif not recognized

    Problem:    Vim9: constant expression of elseif not recognized.
    Solution:   Set instruction count before generating the expression.

diff --git a/src/testdir/test_vim9_disassemble.vim b/src/testdir/test_vim9_disassemble.vim
--- a/src/testdir/test_vim9_disassemble.vim
+++ b/src/testdir/test_vim9_disassemble.vim
@@ -2296,6 +2296,38 @@ def Test_debugged()
         res)
 enddef
 
+def s:ElseifConstant()
+  if g:value
+    echo "one"
+  elseif true
+    echo "true"
+  elseif false
+    echo "false"
+  endif
+enddef
+
+def Test_debug_elseif_constant()
+  var res = execute('disass s:ElseifConstant')
+  assert_match('<SNR>\d*_ElseifConstant\_s*' ..
+          'if g:value\_s*' ..
+          '0 LOADG g:value\_s*' ..
+          '1 COND2BOOL\_s*' ..
+          '2 JUMP_IF_FALSE -> 6\_s*' ..
+          'echo "one"\_s*' ..
+          '3 PUSHS "one"\_s*' ..
+          '4 ECHO 1\_s*' ..
+          'elseif true\_s*' ..
+          '5 JUMP -> 8\_s*' ..
+          'echo "true"\_s*' ..
+          '6 PUSHS "true"\_s*' ..
+          '7 ECHO 1\_s*' ..
+          'elseif false\_s*' ..
+          'echo "false"\_s*' ..
+          'endif\_s*' ..
+          '\d RETURN void*',
+        res)
+enddef
+
 def s:DebugElseif()
   var b = false
   if b
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3707,
+/**/
     3706,
 /**/
     3705,
diff --git a/src/vim9compile.c b/src/vim9compile.c
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -7785,7 +7785,7 @@ compile_elseif(char_u *arg, cctx_T *cctx
 {
     char_u	*p = arg;
     garray_T	*instr = &cctx->ctx_instr;
-    int		instr_count = instr->ga_len;
+    int		instr_count;
     isn_T	*isn;
     scope_T	*scope = cctx->ctx_scope;
     ppconst_T	ppconst;
@@ -7871,19 +7871,15 @@ compile_elseif(char_u *arg, cctx_T *cctx
 	cctx->ctx_skip = SKIP_UNKNOWN;
 #ifdef FEAT_PROFILE
 	if (cctx->ctx_compile_type == CT_PROFILE)
-	{
 	    // the previous block was skipped, need to profile this line
 	    generate_instr(cctx, ISN_PROF_START);
-	    instr_count = instr->ga_len;
-	}
 #endif
 	if (cctx->ctx_compile_type == CT_DEBUG)
-	{
 	    // the previous block was skipped, may want to debug this line
 	    generate_instr_debug(cctx);
-	    instr_count = instr->ga_len;
-	}
-    }
+    }
+
+    instr_count = instr->ga_len;
     if (compile_expr1(&p, cctx, &ppconst) == FAIL)
     {
 	clear_ppconst(&ppconst);