Merge topic 'dev/backtrace-performance'

86be733f cmGeneratorExpression: Add workaround for Borland compiler
3495ab0a tests: update unused variable test expected output
2a1b2d84 backtrace: Convert to local paths in IssueMessage
a0829205 genex: remove the need for backtraces
efc20569 cmake: remove dummy backtraces for IssueMessage
d46c650d cmMakefile: return a backtrace

1 files changed, 5 insertions, 0 deletions

diff --git a/Source/cmGeneratorExpressionEvaluator.h b/Source/cmGeneratorExpressionEvaluator.h
index eb76d7f..0ffb860 100644
--- a/Source/cmGeneratorExpressionEvaluator.h
+++ b/Source/cmGeneratorExpressionEvaluator.h
@@ -22,6 +22,11 @@ class cmTarget;
 //----------------------------------------------------------------------------
 struct cmGeneratorExpressionContext
 {
+  cmGeneratorExpressionContext()
+    : Backtrace(NULL)
+  {
+  }
+
   cmListFileBacktrace Backtrace;
   std::set<cmTarget*> DependTargets;
   std::set<cmTarget const*> AllTargets;