r278983 - PR18417: Increase -ftemplate-depth to the value 1024 recommended by the C++

[Richard Smith via cfe-commits]

Author: rsmith
Date: Wed Aug 17 16:41:45 2016
New Revision: 278983

URL: http://llvm.org/viewvc/llvm-project?rev=278983&view=rev
Log:
PR18417: Increase -ftemplate-depth to the value 1024 recommended by the C++
standard's Annex B. We now attempt to increase the process's stack rlimit to
8MiB on startup, which appears to be enough to allow this to work reliably.
(And if it turns out not to be, we can investigate increasing it further.)

Modified:
    cfe/trunk/include/clang/Basic/LangOptions.def
    cfe/trunk/lib/Frontend/CompilerInvocation.cpp

Modified: cfe/trunk/include/clang/Basic/LangOptions.def
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/LangOptions.def?rev=278983&r1=278982&r2=278983&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/LangOptions.def (original)
+++ cfe/trunk/include/clang/Basic/LangOptions.def Wed Aug 17 16:41:45 2016
@@ -235,7 +235,7 @@ ENUM_LANGOPT(SignedOverflowBehavior, Sig
 
 BENIGN_LANGOPT(ArrowDepth, 32, 256,
                "maximum number of operator->s to follow")
-BENIGN_LANGOPT(InstantiationDepth, 32, 256,
+BENIGN_LANGOPT(InstantiationDepth, 32, 1024,
                "maximum template instantiation depth")
 BENIGN_LANGOPT(ConstexprCallDepth, 32, 512,
                "maximum constexpr call depth")

Modified: cfe/trunk/lib/Frontend/CompilerInvocation.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CompilerInvocation.cpp?rev=278983&r1=278982&r2=278983&view=diff
==============================================================================
--- cfe/trunk/lib/Frontend/CompilerInvocation.cpp (original)
+++ cfe/trunk/lib/Frontend/CompilerInvocation.cpp Wed Aug 17 16:41:45 2016
@@ -1910,7 +1910,7 @@ static void ParseLangArgs(LangOptions &O
   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
   Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
   Opts.InstantiationDepth =
-      getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
+      getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags);
   Opts.ArrowDepth =
       getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
   Opts.ConstexprCallDepth =