Option parsing: allow aliases in groups

Option aliases in option groups were previously disallowed by an assert.
As far as I can tell, there was no technical reason for this, and I would
like to be able to put cl.exe compatible options in their own group for Clang,
so let's change the assert.

llvm-svn: 186838

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/unittests/Option/OptionParsingTest.cpp b/llvm/unittests/Option/OptionParsingTest.cpp
index 8bfa99b..2c4fdcf 100644
--- a/llvm/unittests/Option/OptionParsingTest.cpp
+++ b/llvm/unittests/Option/OptionParsingTest.cpp
@@ -136,3 +136,12 @@ TEST(Option, ParseWithFlagExclusions) {
   EXPECT_EQ(AL->getLastArgValue(OPT_SLASH_C), "foo");
   EXPECT_EQ(AL->getLastArgValue(OPT_C), "bar");
 }
+
+TEST(Option, ParseAliasInGroup) {
+  TestOptTable T;
+  unsigned MAI, MAC;
+
+  const char *MyArgs[] = { "-I" };
+  OwningPtr<InputArgList> AL(T.ParseArgs(MyArgs, array_endof(MyArgs), MAI, MAC));
+  EXPECT_TRUE(AL->hasArg(OPT_H));
+}