[llvm-commits] [llvm] r79541 - /llvm/trunk/lib/Support/ErrorHandling.cpp

[Dan Gohman]

Author: djg
Date: Thu Aug 20 12:15:19 2009
New Revision: 79541

URL: http://llvm.org/viewvc/llvm-project?rev=79541&view=rev
Log:
Add a comment explaining why llvm_unreachable_internal doesn't call
the ErrorHandler callback.

Modified:
    llvm/trunk/lib/Support/ErrorHandling.cpp

Modified: llvm/trunk/lib/Support/ErrorHandling.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/ErrorHandling.cpp?rev=79541&r1=79540&r2=79541&view=diff

==============================================================================
--- llvm/trunk/lib/Support/ErrorHandling.cpp (original)
+++ llvm/trunk/lib/Support/ErrorHandling.cpp Thu Aug 20 12:15:19 2009
@@ -58,6 +58,9 @@
 
 void llvm_unreachable_internal(const char *msg, const char *file, 
                                unsigned line) {
+  // This code intentionally doesn't call the ErrorHandler callback, because
+  // llvm_unreachable is intended to be used to indicate "impossible"
+  // situations, and not legitimate runtime errors.
   if (msg)
     errs() << msg << "\n";
   errs() << "UNREACHABLE executed";