From 93eeb24c446d0d0255de2bebb8da6fc0546039fc Mon Sep 17 00:00:00 2001
From: Brian Aker <brian@gaz>
Date: Tue, 9 Feb 2010 12:44:21 -0800
Subject: [PATCH] Fixing bogus assert in debug build.

---
 libmemcached/hash.c       |  3 ---
 libmemcached/result.c     |  1 +
 libmemcached/watchpoint.h | 35 ++++++++++++++++++++++++++++++++---
 3 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/libmemcached/hash.c b/libmemcached/hash.c
index dbdcc7de..1c11c50d 100644
--- a/libmemcached/hash.c
+++ b/libmemcached/hash.c
@@ -28,7 +28,6 @@ uint32_t generate_hash(memcached_st *ptr, const char *key, size_t key_length)
     return 0;
 
   hash= hashkit_digest(&ptr->hashkit, key, key_length);
-  WATCHPOINT_ASSERT(hash);
 
   return hash;
 }
@@ -103,8 +102,6 @@ uint32_t memcached_generate_hash(memcached_st *ptr, const char *key, size_t key_
     hash= generate_hash(ptr, key, key_length);
   }
 
-  WATCHPOINT_ASSERT(hash);
-
   if (memcached_behavior_get(ptr, MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS) && ptr->next_distribution_rebuild)
   {
     struct timeval now;
diff --git a/libmemcached/result.c b/libmemcached/result.c
index f673413b..037293e7 100644
--- a/libmemcached/result.c
+++ b/libmemcached/result.c
@@ -53,6 +53,7 @@ memcached_result_st *memcached_result_create(const memcached_st *memc,
   _result_init(ptr, memc);
 
   ptr->root= memc;
+  WATCHPOINT_SET(ptr->value.options.is_initialized= false);
   memcached_string_create(memc, &ptr->value, 0);
   WATCHPOINT_ASSERT_INITIALIZED(&ptr->value);
   WATCHPOINT_ASSERT(ptr->value.string == NULL);
diff --git a/libmemcached/watchpoint.h b/libmemcached/watchpoint.h
index 38410194..6935a529 100644
--- a/libmemcached/watchpoint.h
+++ b/libmemcached/watchpoint.h
@@ -15,6 +15,33 @@
 /* Some personal debugging functions */
 #if defined(DEBUG)
 
+#if TARGET_OS_LINUX
+static inline void __stack_dump(void)
+{
+  void *array[10];
+  int size;
+  char **strings;
+
+  size= backtrace(array, 10);
+  strings= backtrace_symbols(array, size);
+
+  fprintf(stderr, "Found %d stack frames.\n", size);
+
+  for (int x= 0; x < size; x++)
+    fprintf(stderr, "%s\n", strings[x]);
+
+  free (strings);
+
+  fflush(stderr);
+}
+
+#else
+
+static inline void __stack_dump(void)
+{ }
+
+#endif // __stack_dump()
+
 #include <assert.h>
 
 #define WATCHPOINT do { fprintf(stderr, "\nWATCHPOINT %s:%d (%s)\n", __FILE__, __LINE__,__func__);fflush(stdout); } while (0)
@@ -24,9 +51,10 @@
 #define WATCHPOINT_STRING_LENGTH(A,B) do { fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %.*s\n", __FILE__, __LINE__,__func__,(int)B,A);fflush(stdout); } while (0)
 #define WATCHPOINT_NUMBER(A) do { fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %zu\n", __FILE__, __LINE__,__func__,(size_t)(A));fflush(stdout); } while (0)
 #define WATCHPOINT_ERRNO(A) do { fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %s\n", __FILE__, __LINE__,__func__, strerror(A));fflush(stdout); } while (0)
-#define WATCHPOINT_ASSERT_PRINT(A,B,C) do { if(!(A)){fprintf(stderr, "\nWATCHPOINT ASSERT %s:%d (%s) ", __FILE__, __LINE__,__func__);fprintf(stderr, (B),(C));fprintf(stderr,"\n");fflush(stdout);}assert((A)); } while (0)
-#define WATCHPOINT_ASSERT(A) assert((A))
-#define WATCHPOINT_ASSERT_INITIALIZED(A) assert(memcached_is_initialized((A)))
+#define WATCHPOINT_ASSERT_PRINT(A,B,C) do { if(!(A)){fprintf(stderr, "\nWATCHPOINT ASSERT %s:%d (%s) ", __FILE__, __LINE__,__func__);fprintf(stderr, (B),(C));fprintf(stderr,"\n");fflush(stdout); __stack_dump(); } assert((A)); } while (0)
+#define WATCHPOINT_ASSERT(A) do { if (! (A)) {__stack_dump();} assert((A)); } while (0)
+#define WATCHPOINT_ASSERT_INITIALIZED(A) do { if (! (A)) { __stack_dump(); } assert(memcached_is_initialized((A))); } while (0);
+#define WATCHPOINT_SET(A) do { A; } while(0);
 
 #else
 
@@ -39,6 +67,7 @@
 #define WATCHPOINT_ASSERT_PRINT(A,B,C)
 #define WATCHPOINT_ASSERT(A)
 #define WATCHPOINT_ASSERT_INITIALIZED(A)
+#define WATCHPOINT_SET(A)
 
 #endif /* DEBUG */
 
-- 
2.30.2