From db88ef35ddbfab1aa0a68391f407192e903cd43b Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Fri, 30 Dec 2022 00:06:57 +0800
Subject: [PATCH]  fixes #14444; add `genLineDir` before assignment (#21201)

* fixes #14444; add `genLineDir` before raises

* add a test case

* fixes differently

(cherry picked from commit 705da9d452d19536689a32a8d4378bcce2ec320a)
---
 compiler/ccgstmts.nim    |  1 +
 tests/errmsgs/t14444.nim | 14 ++++++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 tests/errmsgs/t14444.nim

diff --git a/compiler/ccgstmts.nim b/compiler/ccgstmts.nim
index d1eed4c324..7f6a9f4b8e 100644
--- a/compiler/ccgstmts.nim
+++ b/compiler/ccgstmts.nim
@@ -1592,6 +1592,7 @@ proc genAsgn(p: BProc, e: PNode, fastAsgn: bool) =
     initLoc(a, locNone, le, OnUnknown)
     a.flags.incl(lfEnforceDeref)
     a.flags.incl(lfPrepareForMutation)
+    genLineDir(p, le) # it can be a nkBracketExpr, which may raise
     expr(p, le, a)
     a.flags.excl(lfPrepareForMutation)
     if fastAsgn: incl(a.flags, lfNoDeepCopy)
diff --git a/tests/errmsgs/t14444.nim b/tests/errmsgs/t14444.nim
new file mode 100644
index 0000000000..aea941f81b
--- /dev/null
+++ b/tests/errmsgs/t14444.nim
@@ -0,0 +1,14 @@
+discard """
+  matrix: "--hints:off"
+  exitcode: "1"
+  output: '''
+t14444.nim(13)           t14444
+fatal.nim(54)            sysFatal
+Error: unhandled exception: index out of bounds, the container is empty [IndexDefect]
+'''
+"""
+
+when true: # bug #14444
+  var i: string
+  i[10] = 'j'
+  echo i