clang: Disable calling into gcc from clang.

[termux-packages] / packages / libllvm / gcc_loop.patch

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.

--- libllvm/tools/clang/lib/Driver/ToolChains/Gnu.cpp	2017-08-31 21:08:36.602287744 +0200
+++ libllvm-mod/tools/clang/lib/Driver/ToolChains/Gnu.cpp	2017-09-01 01:00:41.695209952 +0200
@@ -157,9 +157,9 @@
   if (!customGCCName.empty())
     GCCName = customGCCName.c_str();
   else if (D.CCCIsCXX()) {
-    GCCName = "g++";
+    GCCName = "false";
   } else
-    GCCName = "gcc";
+    GCCName = "false";
 
   const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));