bin: compile lttng as C++

[lttng-tools.git] / src / common / filter / filter-ast.h

diff --git a/src/common/filter/filter-ast.h b/src/common/filter/filter-ast.h
index 93f9b9b25fd746673cc4689ff7ac7f5033779122..d7a5674451db2ee8f9872f9134784710b43aba78 100644 (file)
--- a/src/common/filter/filter-ast.h
+++ b/src/common/filter/filter-ast.h
@@ -20,6 +20,10 @@
 #include <stdio.h>
 #include <stdint.h>
 
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
 #define printf_debug(fmt, args...)                                     \
        do {                                                            \
                if (filter_parser_debug)                                \
@@ -99,6 +103,8 @@ struct filter_node {
        enum node_type type;
        union {
                struct {
+                       /* Avoid -Wextern-c-compat warning with clang++. */
+                       char unused;
                } unknown;
                struct {
                        struct filter_node *child;
@@ -186,4 +192,8 @@ int filter_visitor_ir_validate_string(struct filter_parser_ctx *ctx);
 int filter_visitor_ir_normalize_glob_patterns(struct filter_parser_ctx *ctx);
 int filter_visitor_ir_validate_globbing(struct filter_parser_ctx *ctx);
 
+#if defined(__cplusplus)
+}
+#endif
+
 #endif /* _FILTER_AST_H */