[lld] r195597 - [Gnu] Ignore unknown arguments, and print message.

[Shankar Easwaran]

Author: shankare
Date: Sun Nov 24 22:22:11 2013
New Revision: 195597

URL: http://llvm.org/viewvc/llvm-project?rev=195597&view=rev
Log:
[Gnu] Ignore unknown arguments, and print message.

Added:
    lld/trunk/test/elf/ignore-unknownoption.test
Modified:
    lld/trunk/lib/Driver/GnuLdDriver.cpp

Modified: lld/trunk/lib/Driver/GnuLdDriver.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/Driver/GnuLdDriver.cpp?rev=195597&r1=195596&r2=195597&view=diff
==============================================================================
--- lld/trunk/lib/Driver/GnuLdDriver.cpp (original)
+++ lld/trunk/lib/Driver/GnuLdDriver.cpp Sun Nov 24 22:22:11 2013
@@ -160,6 +160,13 @@ bool GnuLdDriver::parse(int argc, const
 
   int index = 0;
 
+  // Ignore unknown arguments.
+  for (auto it = parsedArgs->filtered_begin(OPT_UNKNOWN),
+            ie = parsedArgs->filtered_end();
+       it != ie; ++it)
+    diagnostics << "warning: ignoring unknown argument: " << (*it)->getValue()
+                << "\n";
+
   // Set sys root path.
   if (llvm::opt::Arg *sysRootPath = parsedArgs->getLastArg(OPT_sysroot))
     ctx->setSysroot(sysRootPath->getValue());

Added: lld/trunk/test/elf/ignore-unknownoption.test
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/test/elf/ignore-unknownoption.test?rev=195597&view=auto
==============================================================================
--- lld/trunk/test/elf/ignore-unknownoption.test (added)
+++ lld/trunk/test/elf/ignore-unknownoption.test Sun Nov 24 22:22:11 2013
@@ -0,0 +1,5 @@
+# This test tests that lld is able to print unknown options that are not
+# recognized.
+RUN: not lld -flavor gnu -target x86_64 --gc-sections 2> %t
+RUN: FileCheck %s < %t
+CHECK: warning: ignoring unknown argument: --gc-sections