diff --git a/ChangeLog b/ChangeLog
index 6fa8074e57..9ac85cb2ed 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Nov 26 11:09:07 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* vm_dump.c (dump_thread): show the displacement from the beginning
+	  of the symbol.
+
 Fri Nov 26 10:48:23 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* vm_dump.c (dump_thread): follow the output of glibc.
diff --git a/vm_dump.c b/vm_dump.c
index 757bf7eb3d..60fce89464 100644
--- a/vm_dump.c
+++ b/vm_dump.c
@@ -727,6 +727,7 @@ dump_thread(void *arg)
 					NULL, NULL, NULL)) {
 			DWORD64 addr = frame.AddrPC.Offset;
 			IMAGEHLP_LINE64 line;
+			DWORD64 displacement;
 			DWORD tmp;
 
 			if (addr == frame.AddrReturn.Offset || addr == 0 ||
@@ -736,10 +737,11 @@ dump_thread(void *arg)
 			memset(buf, 0, sizeof(buf));
 			info->SizeOfStruct = sizeof(SYMBOL_INFO);
 			info->MaxNameLen = MAX_SYM_NAME;
-			if (pSymFromAddr(ph, addr, NULL, info)) {
+			if (pSymFromAddr(ph, addr, &displacement, info)) {
 			    if (GetModuleFileName((HANDLE)(uintptr_t)pSymGetModuleBase64(ph, addr), libpath, sizeof(libpath)))
 				fprintf(stderr, "%s", libpath);
-			    fprintf(stderr, "(%s)", info->Name);
+			    fprintf(stderr, "(%s+0x%I64x)",
+				    info->Name, displacement);
 			}
 			fprintf(stderr, " [0x%p]", (void *)(VALUE)addr);
 			memset(&line, 0, sizeof(line));