commit a3d3bd215bcd9dd39b547e8401b157cdbde7e6d0
author Richard Smith <richard-llvm@metafoo.co.uk> Wed May 08 02:12:03 2013 +0000
committer Richard Smith <richard-llvm@metafoo.co.uk> Wed May 08 02:12:03 2013 +0000
tree 7b194437fb1c9f8534587270715c57fbb59f3ec0
parent 1aee70b7732c8816dfff17abfff87c047fe6646c

C++1y: Add a step limit to constexpr evaluation, to catch runaway loops.

llvm-svn: 181388

clang/lib/Frontend/CompilerInvocation.cpp

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 42ea96f..9c8eea1 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -1251,6 +1251,8 @@
                                                     Diags);
   Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512,
                                                     Diags);
+  Opts.ConstexprStepLimit = Args.getLastArgIntValue(OPT_fconstexpr_steps,
+                                                    1048576, Diags);
   Opts.BracketDepth = Args.getLastArgIntValue(OPT_fbracket_depth, 256, Diags);
   Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
   Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ,