From 76a263c3aa137d48929a2c088c8ac81cb14093b3 Mon Sep 17 00:00:00 2001
From: markj <markj@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Date: Fri, 26 Dec 2014 22:52:43 +0000
Subject: [PATCH] MFC r272671: Treat D keywords as identifiers in certain
 postfix expressions. This allows one to, for example, access the "provider"
 field of a struct g_consumer, even though "provider" is a D keyword.

PR:	169657


git-svn-id: svn://svn.freebsd.org/base/stable/9@276266 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
---
 .../lib/libdtrace/common/dt_grammar.y         | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_grammar.y b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_grammar.y
index 0c12623bc..73c26be58 100644
--- a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_grammar.y
+++ b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_grammar.y
@@ -204,6 +204,8 @@
 %type	<l_tok>		unary_operator
 %type	<l_tok>		struct_or_union
 
+%type	<l_str>		dtrace_keyword_ident
+
 %%
 
 dtrace_program: d_expression DT_TOK_EOF { return (dt_node_root($1)); }
@@ -388,12 +390,18 @@ postfix_expression:
 	|	postfix_expression DT_TOK_DOT DT_TOK_TNAME {
 			$$ = OP2(DT_TOK_DOT, $1, dt_node_ident($3));
 		}
+	|	postfix_expression DT_TOK_DOT dtrace_keyword_ident {
+			$$ = OP2(DT_TOK_DOT, $1, dt_node_ident($3));
+		}
 	|	postfix_expression DT_TOK_PTR DT_TOK_IDENT {
 			$$ = OP2(DT_TOK_PTR, $1, dt_node_ident($3));
 		}
 	|	postfix_expression DT_TOK_PTR DT_TOK_TNAME {
 			$$ = OP2(DT_TOK_PTR, $1, dt_node_ident($3));
 		}
+	|	postfix_expression DT_TOK_PTR dtrace_keyword_ident {
+			$$ = OP2(DT_TOK_PTR, $1, dt_node_ident($3));
+		}
 	|	postfix_expression DT_TOK_ADDADD {
 			$$ = OP1(DT_TOK_POSTINC, $1);
 		}
@@ -408,6 +416,10 @@ postfix_expression:
 		    DT_TOK_TNAME DT_TOK_RPAR {
 			$$ = dt_node_offsetof($3, $5);
 		}
+	|	DT_TOK_OFFSETOF DT_TOK_LPAR type_name DT_TOK_COMMA
+		    dtrace_keyword_ident DT_TOK_RPAR {
+			$$ = dt_node_offsetof($3, $5);
+		}
 	|	DT_TOK_XLATE DT_TOK_LT type_name DT_TOK_GT
 		    DT_TOK_LPAR expression DT_TOK_RPAR {
 			$$ = OP2(DT_TOK_XLATE, dt_node_type($3), $6);
@@ -831,4 +843,15 @@ function_parameters:
 	|	parameter_type_list	{ $$ = $1; }
 	;
 
+dtrace_keyword_ident:
+	  DT_KEY_PROBE { $$ = DUP("probe"); }
+	| DT_KEY_PROVIDER { $$ = DUP("provider"); }
+	| DT_KEY_SELF { $$ = DUP("self"); }
+	| DT_KEY_STRING { $$ = DUP("string"); }
+	| DT_TOK_STRINGOF { $$ = DUP("stringof"); }
+	| DT_KEY_USERLAND { $$ = DUP("userland"); }
+	| DT_TOK_XLATE { $$ = DUP("xlate"); }
+	| DT_KEY_XLATOR { $$ = DUP("translator"); }
+	;
+
 %%
-- 
2.45.0