[flang-commits] [flang] [flang] Make sure range is valid (PR #104281)

[Valentin Clement バレンタイン クレメン via flang-commits]

https://github.com/clementval created https://github.com/llvm/llvm-project/pull/104281

Attempt to solve #102495

>From b4aecc48cc553bca746ac35b452fa51be7d054fa Mon Sep 17 00:00:00 2001
From: Valentin Clement <clementval at gmail.com>
Date: Wed, 14 Aug 2024 14:57:26 -0700
Subject: [PATCH] [flang] Make sure range is valid

---
 flang/lib/Parser/provenance.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/flang/lib/Parser/provenance.cpp b/flang/lib/Parser/provenance.cpp
index e31038b09e4072..fe92aa7f64fb1d 100644
--- a/flang/lib/Parser/provenance.cpp
+++ b/flang/lib/Parser/provenance.cpp
@@ -248,7 +248,7 @@ static void EmitPrefix(llvm::raw_ostream &o, llvm::raw_ostream::Colors color,
 
 std::optional<ProvenanceRange> AllSources::GetInclusionInfo(
     const std::optional<ProvenanceRange> &range) const {
-  if (!range)
+  if (!range || !IsValid(range->start()))
     return std::nullopt;
   const Origin &origin{MapToOrigin(range->start())};