From 75560de5f5df4a003ecf80e28bf2b926ba758e55 Mon Sep 17 00:00:00 2001
From: Alexander Monakov <amonakov@ispras.ru>
Date: Thu, 3 Aug 2017 16:39:47 +0300
Subject: toplev: avoid recursive emergency_dump_function

	* toplev.c (dumpfile.h): New include.
	(internal_error_reentered): New static function.  Use it...
	(internal_error_function): ...here to handle reentered internal_error.

From-SVN: r250854
---
 gcc/toplev.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'gcc/toplev.c')

diff --git a/gcc/toplev.c b/gcc/toplev.c
index b28f184..48a79e2 100644
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -80,6 +80,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "hsa-common.h"
 #include "edit-context.h"
 #include "tree-pass.h"
+#include "dumpfile.h"
 
 #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO)
 #include "dbxout.h"
@@ -1064,11 +1065,22 @@ open_auxiliary_file (const char *ext)
   return file;
 }
 
+/* Alternative diagnostics callback for reentered ICE reporting.  */
+
+static void
+internal_error_reentered (diagnostic_context *, const char *, va_list *)
+{
+  /* Flush the dump file if emergency_dump_function itself caused an ICE.  */
+  if (dump_file)
+    fflush (dump_file);
+}
+
 /* Auxiliary callback for the diagnostics code.  */
 
 static void
 internal_error_function (diagnostic_context *, const char *, va_list *)
 {
+  global_dc->internal_error = internal_error_reentered;
   warn_if_plugins ();
   emergency_dump_function ();
 }
-- 
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