[polly] r252609 - stringFromIslObj: Do not crash when printing 'null' objects

[Tobias Grosser via llvm-commits]

Author: grosser
Date: Tue Nov 10 09:09:44 2015
New Revision: 252609

URL: http://llvm.org/viewvc/llvm-project?rev=252609&view=rev
Log:
stringFromIslObj: Do not crash when printing 'null' objects

No test case, as this code path is currently only used for debugging.

Modified:
    polly/trunk/lib/Support/GICHelper.cpp

Modified: polly/trunk/lib/Support/GICHelper.cpp
URL: http://llvm.org/viewvc/llvm-project/polly/trunk/lib/Support/GICHelper.cpp?rev=252609&r1=252608&r2=252609&view=diff
==============================================================================
--- polly/trunk/lib/Support/GICHelper.cpp (original)
+++ polly/trunk/lib/Support/GICHelper.cpp Tue Nov 10 09:09:44 2015
@@ -74,7 +74,11 @@ static inline std::string stringFromIslO
   isl_printer *p = isl_printer_to_str(ctx);
   printer_fn(p, isl_obj);
   char *char_str = isl_printer_get_str(p);
-  std::string string(char_str);
+  std::string string;
+  if (char_str)
+    string = char_str;
+  else
+    string = "null";
   free(char_str);
   isl_printer_free(p);
   return string;