commit 83071bc877b462eacca309fa49c9e8112fc16bdf

Author: Jafeer Uddin <juddin@redhat.com>

Date:   Thu May 9 16:18:46 2019 -0400

    PR23074: fix guru mode issue with generated calls to register get/set

diff --git a/elaborate.cxx b/elaborate.cxx

index 9ebf30b..fcd1d1d 100644

--- a/elaborate.cxx

+++ b/elaborate.cxx

@@ -3073,7 +3073,7 @@ public:

     }

   // Don't allow /* guru */ functions unless caller is privileged.

-  if (!call->tok->location.file->privileged &&

+  if (!call->synthetic && !call->tok->location.file->privileged &&

       s->tagged_p ("/* guru */"))

     throw SEMANTIC_ERROR (_("function may not be used unless -g is specified"),

 			  call->tok);

diff --git a/loc2stap.cxx b/loc2stap.cxx

index c1a48d0..d4fd051 100644

--- a/loc2stap.cxx

+++ b/loc2stap.cxx

@@ -1745,6 +1745,7 @@ location_context::handle_GNU_parameter_ref (Dwarf_Op expr)

   // it and we want to be able to restore the registers back.

   functioncall *get_ptregs = new functioncall;

   get_ptregs->tok = e->tok;

+  get_ptregs->synthetic = true;

   if (this->userspace_p)

     get_ptregs->function = std::string("__get_uregs");

   else

@@ -1870,6 +1871,7 @@ location_context::handle_GNU_parameter_ref (Dwarf_Op expr)

   // Translation done, restore the pt_regs to its original value

   functioncall *set_ptregs = new functioncall;

   set_ptregs->tok = e->tok;

+  set_ptregs->synthetic = true;

   if (this->userspace_p)

     set_ptregs->function = std::string("__set_uregs");

   else

diff --git a/staptree.h b/staptree.h

index d63156f..2735808 100644

--- a/staptree.h

+++ b/staptree.h

@@ -464,6 +464,7 @@ struct functioncall: public expression

   interned_string function;

   std::vector<expression*> args;

   std::vector<functiondecl*> referents;

+  bool synthetic;

   functioncall ();

   void print (std::ostream& o) const;

   void visit (visitor* u);