From 1743a11163c0105ddaf9c480e7d1fe3f9c912bd9 Mon Sep 17 00:00:00 2001
From: John Coomes <jcoomes@openjdk.org>
Date: Thu, 20 Sep 2012 16:27:51 -0700
Subject: [PATCH] 7199082: write warning messages to stderr

Reviewed-by: ysr, dholmes, sla
---
 hotspot/src/share/vm/utilities/debug.cpp | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/hotspot/src/share/vm/utilities/debug.cpp b/hotspot/src/share/vm/utilities/debug.cpp
index e6a755fcf2b..76164058e01 100644
--- a/hotspot/src/share/vm/utilities/debug.cpp
+++ b/hotspot/src/share/vm/utilities/debug.cpp
@@ -101,14 +101,13 @@ FormatBufferResource::FormatBufferResource(const char * format, ...)
 
 void warning(const char* format, ...) {
   if (PrintWarnings) {
-    // In case error happens before init or during shutdown
-    if (tty == NULL) ostream_init();
-
-    tty->print("%s warning: ", VM_Version::vm_name());
+    FILE* const err = defaultStream::error_stream();
+    jio_fprintf(err, "%s warning: ", VM_Version::vm_name());
     va_list ap;
     va_start(ap, format);
-    tty->vprint_cr(format, ap);
+    vfprintf(err, format, ap);
     va_end(ap);
+    fputc('\n', err);
   }
   if (BreakAtWarning) BREAKPOINT;
 }