X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Ffilter%2Ffilter-ast.h;h=2b460b401ef669d87a3ab9da67e973a564914e59;hb=4878de5c7deb512bbdac4fdfc498907efa06fb7c;hp=93f9b9b25fd746673cc4689ff7ac7f5033779122;hpb=2b00d46244cab86f1186a7b00cdc660f24a26f72;p=lttng-tools.git

diff --git a/src/common/filter/filter-ast.h b/src/common/filter/filter-ast.h
index 93f9b9b25..2b460b401 100644
--- a/src/common/filter/filter-ast.h
+++ b/src/common/filter/filter-ast.h
@@ -89,6 +89,16 @@ enum ast_link_type {
 	AST_LINK_BRACKET,
 };
 
+enum ast_expt_type {
+	AST_EXP_UNKNOWN = 0,
+	AST_EXP_STRING,
+	AST_EXP_CONSTANT,
+	AST_EXP_FLOAT_CONSTANT,
+	AST_EXP_IDENTIFIER,
+	AST_EXP_GLOBAL_IDENTIFIER,
+	AST_EXP_NESTED,
+};
+
 struct filter_node {
 	/*
 	 * Parent node is only set on demand by specific visitor.
@@ -99,20 +109,14 @@ struct filter_node {
 	enum node_type type;
 	union {
 		struct {
+			/* Avoid -Wextern-c-compat warning with clang++. */
+			char unused;
 		} unknown;
 		struct {
 			struct filter_node *child;
 		} root;
 		struct {
-			enum {
-				AST_EXP_UNKNOWN = 0,
-				AST_EXP_STRING,
-				AST_EXP_CONSTANT,
-				AST_EXP_FLOAT_CONSTANT,
-				AST_EXP_IDENTIFIER,
-				AST_EXP_GLOBAL_IDENTIFIER,
-				AST_EXP_NESTED,
-			} type;
+			enum ast_expt_type type;
 			enum ast_link_type post_op;	/* reverse */
 			enum ast_link_type pre_op;	/* forward */
 			union {