From 428a046ca4c38219aebb47e0dfbcdfa5e607a5fe Mon Sep 17 00:00:00 2001
From: Marcel Hlopko <hlopko@google.com>
Date: Mon, 15 Feb 2021 13:39:30 +0100
Subject: [PATCH] Make clang version parsing logic more robust

Previously the function assumed that the version number appeared in the
third word. This PR adds a heuristic - take the first word that starts
with a number.

This way we can also parse: `debian clang version 11.0` that my clang
reports.
---
 src/lib.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index 8dcba3fb97..06ba8e6377 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2444,10 +2444,12 @@ pub struct ClangVersion {
 pub fn clang_version() -> ClangVersion {
     ensure_libclang_is_loaded();
 
+    //Debian clang version 11.0.1-2
     let raw_v: String = clang::extract_clang_version();
     let split_v: Option<Vec<&str>> = raw_v
         .split_whitespace()
-        .nth(2)
+        .filter(|t| t.chars().next().map_or(false, |v| v.is_ascii_digit()))
+        .next()
         .map(|v| v.split('.').collect());
     match split_v {
         Some(v) => {