From: Martin Jambor <mjambor@suse.cz>
Date: Wed, 1 Mar 2017 13:54:56 +0000 (+0100)
Subject: [PR 79579] Avoid segfault on NULL ipa_edge_args_vector
X-Git-Tag: releases/gcc-5.5.0~495
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a5d5566902e1da94b5a315beb81c92a03da07100;p=thirdparty%2Fgcc.git

[PR 79579] Avoid segfault on NULL ipa_edge_args_vector

2017-03-01  Martin Jambor  <mjambor@suse.cz>

	Backport from mainline
	2017-02-21  Martin Jambor  <mjambor@suse.cz>

	PR lto/79579
	* ipa-prop.c (ipa_prop_write_jump_functions): Bail out if no edges
	have been analyzed.

From-SVN: r245810
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 134d03a839e9..e2ebd83d21d7 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2017-03-01  Martin Jambor  <mjambor@suse.cz>
+
+	Backport from mainline
+	2017-02-21  Martin Jambor  <mjambor@suse.cz>
+
+	PR lto/79579
+	* ipa-prop.c (ipa_prop_write_jump_functions): Bail out if no edges
+	have been analyzed.
+
 2017-02-28  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR target/79749
diff --git a/gcc/ipa-prop.c b/gcc/ipa-prop.c
index a7515f1791fe..de44c22bdb08 100644
--- a/gcc/ipa-prop.c
+++ b/gcc/ipa-prop.c
@@ -4777,7 +4777,7 @@ ipa_prop_write_jump_functions (void)
   lto_symtab_encoder_iterator lsei;
   lto_symtab_encoder_t encoder;
 
-  if (!ipa_node_params_sum)
+  if (!ipa_node_params_sum || !ipa_edge_args_vector)
     return;
 
   ob = create_output_block (LTO_section_jump_functions);