Fix: plugin-dev.h: Disable address sanitizer on pointer array section variables

[babeltrace.git] / include / babeltrace2 / plugin / plugin-dev.h

diff --git a/include/babeltrace2/plugin/plugin-dev.h b/include/babeltrace2/plugin/plugin-dev.h
index 713725366f9ca9034a0dbb31f4118c84d463357f..e5d811d8b7fbc80ed3e724397ff42c3df7667a90 100644 (file)
--- a/include/babeltrace2/plugin/plugin-dev.h
+++ b/include/babeltrace2/plugin/plugin-dev.h
@@ -2660,13 +2660,31 @@ struct __bt_plugin_component_class_descriptor_attribute const * const *__bt_get_
        };                                                              \
        static struct __bt_plugin_component_class_descriptor_attribute const * const __bt_plugin_##_type##_component_class_descriptor_attribute_##_id##_##_component_class_id##_##_attr_name##_ptr __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_ATTRS = &__bt_plugin_##_type##_component_class_descriptor_attribute_##_id##_##_component_class_id##_##_attr_name
 
+/*
+ * Clang supports the no_sanitize variable attribute on global variables.
+ * GCC only supports the no_sanitize_address function attribute, which is
+ * not what we need. This is fine because, as far as we have seen, gcc
+ * does not insert red zones around global variables.
+ */
+#if defined(__clang__)
+# if __has_feature(address_sanitizer)
+#  define __bt_plugin_variable_attribute_no_sanitize_address \
+       __attribute__((no_sanitize("address")))
+# else
+#  define __bt_plugin_variable_attribute_no_sanitize_address
+# endif
+#else
+#  define __bt_plugin_variable_attribute_no_sanitize_address
+#endif
+
 /*
  * Variable attributes for a plugin descriptor pointer to be added to
  * the plugin descriptor section (internal use).
  */
 #ifdef __APPLE__
 #define __BT_PLUGIN_DESCRIPTOR_ATTRS \
-       __attribute__((section("__DATA,btp_desc"), used))
+       __attribute__((section("__DATA,btp_desc"), used)) \
+       __bt_plugin_variable_attribute_no_sanitize_address
 
 #define __BT_PLUGIN_DESCRIPTOR_BEGIN_SYMBOL \
        __start___bt_plugin_descriptors
@@ -2683,7 +2701,8 @@ struct __bt_plugin_component_class_descriptor_attribute const * const *__bt_get_
 #else
 
 #define __BT_PLUGIN_DESCRIPTOR_ATTRS \
-       __attribute__((section("__bt_plugin_descriptors"), used))
+       __attribute__((section("__bt_plugin_descriptors"), used)) \
+       __bt_plugin_variable_attribute_no_sanitize_address
 
 #define __BT_PLUGIN_DESCRIPTOR_BEGIN_SYMBOL \
        __start___bt_plugin_descriptors
@@ -2702,7 +2721,8 @@ struct __bt_plugin_component_class_descriptor_attribute const * const *__bt_get_
  */
 #ifdef __APPLE__
 #define __BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_ATTRS \
-       __attribute__((section("__DATA,btp_desc_att"), used))
+       __attribute__((section("__DATA,btp_desc_att"), used)) \
+       __bt_plugin_variable_attribute_no_sanitize_address
 
 #define __BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_BEGIN_SYMBOL \
        __start___bt_plugin_descriptor_attributes
@@ -2719,7 +2739,8 @@ struct __bt_plugin_component_class_descriptor_attribute const * const *__bt_get_
 #else
 
 #define __BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_ATTRS \
-       __attribute__((section("__bt_plugin_descriptor_attributes"), used))
+       __attribute__((section("__bt_plugin_descriptor_attributes"), used)) \
+       __bt_plugin_variable_attribute_no_sanitize_address
 
 #define __BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_BEGIN_SYMBOL \
        __start___bt_plugin_descriptor_attributes
@@ -2738,7 +2759,8 @@ struct __bt_plugin_component_class_descriptor_attribute const * const *__bt_get_
  */
 #ifdef __APPLE__
 #define __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRS \
-       __attribute__((section("__DATA,btp_cc_desc"), used))
+       __attribute__((section("__DATA,btp_cc_desc"), used)) \
+       __bt_plugin_variable_attribute_no_sanitize_address
 
 #define __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_BEGIN_SYMBOL \
        __start___bt_plugin_component_class_descriptors
@@ -2755,7 +2777,8 @@ struct __bt_plugin_component_class_descriptor_attribute const * const *__bt_get_
 #else
 
 #define __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRS \
-       __attribute__((section("__bt_plugin_component_class_descriptors"), used))
+       __attribute__((section("__bt_plugin_component_class_descriptors"), used)) \
+       __bt_plugin_variable_attribute_no_sanitize_address
 
 #define __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_BEGIN_SYMBOL \
        __start___bt_plugin_component_class_descriptors
@@ -2775,7 +2798,8 @@ struct __bt_plugin_component_class_descriptor_attribute const * const *__bt_get_
  */
 #ifdef __APPLE__
 #define __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_ATTRS \
-       __attribute__((section("__DATA,btp_cc_desc_att"), used))
+       __attribute__((section("__DATA,btp_cc_desc_att"), used)) \
+       __bt_plugin_variable_attribute_no_sanitize_address
 
 #define __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_BEGIN_SYMBOL \
        __start___bt_plugin_component_class_descriptor_attributes
@@ -2792,7 +2816,8 @@ struct __bt_plugin_component_class_descriptor_attribute const * const *__bt_get_
 #else
 
 #define __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_ATTRS \
-       __attribute__((section("__bt_plugin_component_class_descriptor_attributes"), used))
+       __attribute__((section("__bt_plugin_component_class_descriptor_attributes"), used)) \
+       __bt_plugin_variable_attribute_no_sanitize_address
 
 #define __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_BEGIN_SYMBOL \
        __start___bt_plugin_component_class_descriptor_attributes