[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 134d03a839e9173777282244238883b13ef07d48..e2ebd83d21d72494954830ff438f943686e20ef4 100644 (file)
--- 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 a7515f1791fe7803050c2f2f0608cb96c053c258..de44c22bdb08b801f0995034254cd9d6f87ffbcc 100644 (file)
--- 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);