From 81ced5c472d1e07fdfe4b3a8b7d5272fedc5f0ba Mon Sep 17 00:00:00 2001
From: Ted Kremenek <kremenek@apple.com>
Date: Thu, 11 Sep 2008 18:17:51 +0000
Subject: [PATCH] Check if the environment variable TERM is defined before
 using it.

This fixes: <rdar://problem/6164279> scan-build gives error when invoked without TERM variable

llvm-svn: 56110
---
 clang/utils/scan-build | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/clang/utils/scan-build b/clang/utils/scan-build
index 908795e281a2..e0d53ad93dc8 100755
--- a/clang/utils/scan-build
+++ b/clang/utils/scan-build
@@ -26,8 +26,9 @@ my $BuildName;
 my $BuildDate;
 my $CXX;  # Leave undefined initially.
 
-my $UseColor = ((($ENV{'TERM'} eq 'xterm-color') and -t STDOUT)
-                and defined($ENV{'SCAN_BUILD_COLOR'}));
+my $TERM = $ENV{'TERM'};
+my $UseColor = (defined $TERM and $TERM eq 'xterm-color' and -t STDOUT
+                and defined $ENV{'SCAN_BUILD_COLOR'});
 
 ##----------------------------------------------------------------------------##
 # Diagnostics