From bea0925f8ccd617293d9171eef8453d938e3a44f Mon Sep 17 00:00:00 2001
From: Abdelrazak Younes <younes@lyx.org>
Date: Fri, 18 Dec 2009 22:59:59 +0000
Subject: [PATCH] Converter: add a safe guard to Alerts because those cannot be
 called from another thread. The whole Alert system must be rethought I am
 afraid.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@32585 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/Buffer.cpp    | 6 ++++++
 src/Buffer.h      | 2 ++
 src/Converter.cpp | 4 ++--
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/Buffer.cpp b/src/Buffer.cpp
index b4671076ad..e3319af92c 100644
--- a/src/Buffer.cpp
+++ b/src/Buffer.cpp
@@ -375,6 +375,12 @@ Buffer * Buffer::clone() const
 }
 
 
+bool Buffer::isClone() const
+{
+	return d->cloned_buffer_;
+}
+
+
 void Buffer::changed() const
 {
 	if (d->wa_)
diff --git a/src/Buffer.h b/src/Buffer.h
index 50bdf77bc9..926a20de6c 100644
--- a/src/Buffer.h
+++ b/src/Buffer.h
@@ -133,6 +133,8 @@ public:
 
 	///
 	Buffer * clone() const;
+	///
+	bool isClone() const;
 
 	/** High-level interface to buffer functionality.
 	    This function parses a command string and executes it.
diff --git a/src/Converter.cpp b/src/Converter.cpp
index c8d0b11915..d8d1dd1ca8 100644
--- a/src/Converter.cpp
+++ b/src/Converter.cpp
@@ -608,13 +608,13 @@ bool Converters::runLaTeX(Buffer const & buffer, string const & command,
 		buffer.bufferErrors(terr, errorList);
 
 	// check return value from latex.run().
-	if ((result & LaTeX::NO_LOGFILE)) {
+	if ((result & LaTeX::NO_LOGFILE) && !buffer.isClone()) {
 		docstring const str =
 			bformat(_("LaTeX did not run successfully. "
 					       "Additionally, LyX could not locate "
 					       "the LaTeX log %1$s."), from_utf8(name));
 		Alert::error(_("LaTeX failed"), str);
-	} else if (result & LaTeX::NO_OUTPUT) {
+	} else if ((result & LaTeX::NO_OUTPUT) && !buffer.isClone()) {
 		Alert::warning(_("Output is empty"),
 			       _("An empty output file was generated."));
 	}