[driver] Don't blindly accept all -g options.
rdar://10383444
llvm-svn: 143732
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 4f84d0a..8c0382f 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -1455,8 +1455,24 @@
// wrong.
Args.ClaimAllArgs(options::OPT_g_Group);
if (Arg *A = Args.getLastArg(options::OPT_g_Group))
- if (!A->getOption().matches(options::OPT_g0))
- CmdArgs.push_back("-g");
+ if (!A->getOption().matches(options::OPT_g0)) {
+ StringRef ArgString = A->getAsString(Args);
+ bool Valid_g = llvm::StringSwitch<bool>(ArgString)
+ .Case("-g", true)
+ .Case("-g3", true)
+ .Case("-gdwarf-2", true)
+ .Case("-gstabs", true)
+ .Case("-gstabs+", true)
+ .Case("-gstabs1", true)
+ .Case("-gstabs2", true)
+ .Case("-gfull", true)
+ .Case("-gused", true)
+ .Default(false);
+ if (Valid_g)
+ CmdArgs.push_back("-g");
+ else
+ D.Diag(diag::warn_drv_clang_unsupported) << ArgString;
+ }
Args.AddAllArgs(CmdArgs, options::OPT_ffunction_sections);
Args.AddAllArgs(CmdArgs, options::OPT_fdata_sections);