llvm: Update from 5.0.1 to 6.0

[termux-packages] / packages / libllvm / tools-clang-lib-Driver-ToolChains-Gnu.cpp.patch

diff -u -r ../llvm-5.0.0.src/tools/clang/lib/Driver/ToolChains/Gnu.cpp ./tools/clang/lib/Driver/ToolChains/Gnu.cpp
--- ../llvm-5.0.0.src/tools/clang/lib/Driver/ToolChains/Gnu.cpp	2017-08-11 03:47:32.000000000 +0200
+++ ./tools/clang/lib/Driver/ToolChains/Gnu.cpp	2017-09-10 20:14:54.636653647 +0200
@@ -152,14 +152,11 @@
     }
   }
 
-  const std::string &customGCCName = D.getCCCGenericGCCName();
-  const char *GCCName;
-  if (!customGCCName.empty())
-    GCCName = customGCCName.c_str();
-  else if (D.CCCIsCXX()) {
-    GCCName = "g++";
-  } else
-    GCCName = "gcc";
+  // Termux modification: Disable calling into gcc from clang.
+  // Clang calls into gcc if it tries to compile a language it doesn't understand.
+  // On Termux gcc is a symlink to clang, so this leads into fork loop until
+  // the whole system runs out of memory.
+  const char *GCCName = "false";
 
   const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));