Bug#37003 Tests sporadically crashes with embedded server

Another problem is that the backtrace facility wasn't being
enabled for non-Linux targets even if the target OS has the
backtrace functions. Also, the stacktrace functions inside
mysqltest were being used without proper checks for their
presence in the build.


client/mysqltest.c:
  Only use stacktrace functions if they are available.
configure.in:
  Check if the compiler defines __bss_start
include/my_stacktrace.h:
  Enable stacktrace if system has backtrace functions.
mysys/stacktrace.c:
  Use backtrace functions if the system supports it.
sql/mysqld.cc:
  Only use stacktrace functions if they are available.

1 files changed, 56 insertions, 56 deletions

diff --git a/mysys/stacktrace.c b/mysys/stacktrace.c
index 7466dcb416e..9ae3d88ef50 100644
--- a/mysys/stacktrace.c
+++ b/mysys/stacktrace.c
@@ -34,11 +34,16 @@
 #define PTR_SANE(p) ((p) && (char*)(p) >= heap_start && (char*)(p) <= heap_end)
 
 static char *heap_start;
+
+#ifdef HAVE_BSS_START
 extern char *__bss_start;
+#endif
 
 void my_init_stacktrace()
 {
+#ifdef HAVE_BSS_START
   heap_start = (char*) &__bss_start;
+#endif
 }
 
 void my_safe_print_str(const char* name, const char* val, int max_len)
@@ -58,55 +63,7 @@ void my_safe_print_str(const char* name, const char* val, int max_len)
   fputc('\n', stderr);
 }
 
-#ifdef TARGET_OS_LINUX
-
-#ifdef __i386__
-#define SIGRETURN_FRAME_OFFSET 17
-#endif
-
-#ifdef __x86_64__
-#define SIGRETURN_FRAME_OFFSET 23
-#endif
-
-#if defined(__alpha__) && defined(__GNUC__)
-/*
-  The only way to backtrace without a symbol table on alpha
-  is to find stq fp,N(sp), and the first byte
-  of the instruction opcode will give us the value of N. From this
-  we can find where the old value of fp is stored
-*/
-
-#define MAX_INSTR_IN_FUNC  10000
-
-inline uchar** find_prev_fp(uint32* pc, uchar** fp)
-{
-  int i;
-  for (i = 0; i < MAX_INSTR_IN_FUNC; ++i,--pc)
-  {
-    uchar* p = (uchar*)pc;
-    if (p[2] == 222 &&  p[3] == 35)
-    {
-      return (uchar**)((uchar*)fp - *(short int*)p);
-    }
-  }
-  return 0;
-}
-
-inline uint32* find_prev_pc(uint32* pc, uchar** fp)
-{
-  int i;
-  for (i = 0; i < MAX_INSTR_IN_FUNC; ++i,--pc)
-  {
-    char* p = (char*)pc;
-    if (p[1] == 0 && p[2] == 94 &&  p[3] == -73)
-    {
-      uint32* prev_pc = (uint32*)*((fp+p[0]/sizeof(fp)));
-      return prev_pc;
-    }
-  }
-  return 0;
-}
-#endif /* defined(__alpha__) && defined(__GNUC__) */
+#if HAVE_BACKTRACE && (HAVE_BACKTRACE_SYMBOLS || HAVE_BACKTRACE_SYMBOLS_FD)
 
 #if BACKTRACE_DEMANGLE
 
@@ -144,11 +101,10 @@ static void my_demangle_symbols(char **addrs, int n)
       fprintf(stderr, "%s\n", addrs[i]);
   }
 }
-#endif
 
+#endif /* BACKTRACE_DEMANGLE */
 
-#if HAVE_BACKTRACE
-static void backtrace_current_thread(void)
+void my_print_stacktrace(uchar* stack_bottom, ulong thread_stack)
 {
   void *addrs[128];
   char **strings= NULL;
@@ -167,15 +123,59 @@ static void backtrace_current_thread(void)
   }
 #endif
 }
+
+#elif defined(TARGET_OS_LINUX)
+
+#ifdef __i386__
+#define SIGRETURN_FRAME_OFFSET 17
 #endif
 
+#ifdef __x86_64__
+#define SIGRETURN_FRAME_OFFSET 23
+#endif
+
+#if defined(__alpha__) && defined(__GNUC__)
+/*
+  The only way to backtrace without a symbol table on alpha
+  is to find stq fp,N(sp), and the first byte
+  of the instruction opcode will give us the value of N. From this
+  we can find where the old value of fp is stored
+*/
+
+#define MAX_INSTR_IN_FUNC  10000
+
+inline uchar** find_prev_fp(uint32* pc, uchar** fp)
+{
+  int i;
+  for (i = 0; i < MAX_INSTR_IN_FUNC; ++i,--pc)
+  {
+    uchar* p = (uchar*)pc;
+    if (p[2] == 222 &&  p[3] == 35)
+    {
+      return (uchar**)((uchar*)fp - *(short int*)p);
+    }
+  }
+  return 0;
+}
+
+inline uint32* find_prev_pc(uint32* pc, uchar** fp)
+{
+  int i;
+  for (i = 0; i < MAX_INSTR_IN_FUNC; ++i,--pc)
+  {
+    char* p = (char*)pc;
+    if (p[1] == 0 && p[2] == 94 &&  p[3] == -73)
+    {
+      uint32* prev_pc = (uint32*)*((fp+p[0]/sizeof(fp)));
+      return prev_pc;
+    }
+  }
+  return 0;
+}
+#endif /* defined(__alpha__) && defined(__GNUC__) */
 
 void my_print_stacktrace(uchar* stack_bottom, ulong thread_stack)
 {
-#if HAVE_BACKTRACE
-  backtrace_current_thread();
-  return;
-#endif
   uchar** fp;
   uint frame_count = 0, sigreturn_frame_count;
 #if defined(__alpha__) && defined(__GNUC__)