[scan-build] Log compiler invocation to stderr, not stdout.

This is important for preprocessing steps, which may output to stdout.

Also, change ENV accesses using barewords to use string keys instead.

PR16414

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185555 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/tools/scan-build/ccc-analyzer b/tools/scan-build/ccc-analyzer
index 60b0185e6fb1801232ec5862d62a8fd73797efdb..7c41a0566d5b7747e0eca4c5e9c09bb059cdfc8a 100755 (executable)
--- a/tools/scan-build/ccc-analyzer
+++ b/tools/scan-build/ccc-analyzer
@@ -427,8 +427,8 @@ my %Uniqued;
 
 # Forward arguments to gcc.
 my $Status = system($Compiler,@ARGV);
-if  (defined $ENV{'CCC_ANALYZER_LOG'}) {
-  print "$Compiler @ARGV\n";
+if (defined $ENV{'CCC_ANALYZER_LOG'}) {
+  print STDERR "$Compiler @ARGV\n";
 }
 if ($Status) { exit($Status >> 8); }
 
@@ -453,8 +453,8 @@ if (!defined $OutputFormat) { $OutputFormat = "html"; }
 
 # Determine the level of verbosity.
 my $Verbose = 0;
-if (defined $ENV{CCC_ANALYZER_VERBOSE}) { $Verbose = 1; }
-if (defined $ENV{CCC_ANALYZER_LOG}) { $Verbose = 2; }
+if (defined $ENV{'CCC_ANALYZER_VERBOSE'}) { $Verbose = 1; }
+if (defined $ENV{'CCC_ANALYZER_LOG'}) { $Verbose = 2; }
 
 # Get the HTML output directory.
 my $HtmlDir = $ENV{'CCC_ANALYZER_HTML'};