patch 8.2.3878: Vim9: debugger tries to read more lines than there are
Problem: Vim9: debugger tries to read more lines than there are.
Solution: Check the number of lines. (closes #9394)
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index fe985de..dcfe888 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -4731,6 +4731,46 @@
delete('XdebugFunc')
enddef
+func Test_debug_running_out_of_lines()
+ CheckRunVimInTerminal
+
+ " call indirectly to avoid compilation error for missing functions
+ call Run_Test_debug_running_out_of_lines()
+endfunc
+
+def Run_Test_debug_running_out_of_lines()
+ var lines =<< trim END
+ vim9script
+ def Crash()
+ #
+ #
+ #
+ #
+ #
+ #
+ #
+ if true
+ #
+ endif
+ enddef
+ breakadd func Crash
+ Crash()
+ END
+ writefile(lines, 'XdebugFunc')
+ var buf = RunVimInTerminal('-S XdebugFunc', {rows: 6, wait_for_ruler: 0})
+ WaitForAssert(() => assert_match('^>', term_getline(buf, 6)))
+
+ term_sendkeys(buf, "next\<CR>")
+ TermWait(buf)
+ WaitForAssert(() => assert_match('^>', term_getline(buf, 6)))
+
+ term_sendkeys(buf, "cont\<CR>")
+ TermWait(buf)
+
+ StopVimInTerminal(buf)
+ delete('XdebugFunc')
+enddef
+
def ProfiledWithLambda()
var n = 3
echo [[1, 2], [3, 4]]->filter((_, l) => l[0] == n)
diff --git a/src/version.c b/src/version.c
index e310f76..e9d77a9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 3878,
+/**/
3877,
/**/
3876,
diff --git a/src/vim9execute.c b/src/vim9execute.c
index 7485112..72cbb90 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -1660,7 +1660,8 @@
if (end_lnum > iptr->isn_lnum)
{
ga_init2(&ga, sizeof(char_u *), 10);
- for (lnum = iptr->isn_lnum; lnum < end_lnum; ++lnum)
+ for (lnum = iptr->isn_lnum; lnum < end_lnum
+ && lnum <= ufunc->uf_lines.ga_len; ++lnum)
{
char_u *p = ((char_u **)ufunc->uf_lines.ga_data)[lnum - 1];