[glib/wip/smcv/address-sanitizer: 1/3] glib-private: Add infrastructure to tell AddressSanitizer to ignore leaks

[Simon McVittie <smcv src gnome org>]

commit fc4e3c2d55a3473ba5d5cfaf0d771e85e21d22e0
Author: Simon McVittie <smcv collabora com>
Date:   Thu Jan 28 21:01:51 2021 +0000

    glib-private: Add infrastructure to tell AddressSanitizer to ignore leaks
    
    Signed-off-by: Simon McVittie <smcv collabora com>

 glib/glib-private.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
---
diff --git a/glib/glib-private.h b/glib/glib-private.h
index 8b7ab132e..a922b0c3b 100644
--- a/glib/glib-private.h
+++ b/glib/glib-private.h
@@ -22,6 +22,32 @@
 #include "gwakeup.h"
 #include "gstdioprivate.h"
 
+#if defined(__SANITIZE_ADDRESS__) || g_macro__has_feature(address_sanitizer)
+# define _GLIB_ADDRESS_SANITIZER
+# include <sanitizer/lsan_interface.h>
+# define g_ignore_leak(p) __lsan_ignore_object (p)
+# define g_ignore_strv_leak(sv) \
+  do \
+    { \
+      _Pragma ("GCC diagnostic push") \
+      _Pragma ("GCC diagnostic ignored \"-Wshadow\"") \
+      const char * const * p = (const char * const *) sv; \
+      \
+      if (p) \
+        { \
+          g_ignore_leak (p); \
+          \
+          while (*p) \
+            g_ignore_leak (*(p++)); \
+        } \
+      _Pragma ("GCC diagnostic pop") \
+    } \
+  while (0)
+#else
+# define g_ignore_leak(p)
+# define g_ignore_strv_leak(sv)
+#endif
+
 GMainContext *          g_get_worker_context            (void);
 gboolean                g_check_setuid                  (void);
 GMainContext *          g_main_context_new_with_next_id (guint next_id);