From: Marek Polacek <polacek@redhat.com>
Date: Wed, 23 Nov 2016 03:17:14 +0000 (+0000)
Subject: re PR tree-optimization/78455 (ICE in operator[], at vec.h:732)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3135d8fe8a2ac2a88c9681494c6f1ea68d3ae614;p=gcc.git

re PR tree-optimization/78455 (ICE in operator[], at vec.h:732)

	PR tree-optimization/78455
	* tree-ssa-uninit.c (can_chain_union_be_invalidated_p): Fix typo.

	* gcc.dg/uninit-23.c: New.

From-SVN: r242733
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6bc37d3d52c..8d11c29d1a6 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2016-11-22  Marek Polacek  <polacek@redhat.com>
+
+	PR tree-optimization/78455
+	* tree-ssa-uninit.c (can_chain_union_be_invalidated_p): Fix typo.
+
 2016-11-22  Ian Lance Taylor  <iant@golang.org>
 
 	PR go/78431
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index e3012bf4bb0..9e8b7468290 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2016-11-22  Marek Polacek  <polacek@redhat.com>
+
+	PR tree-optimization/78455
+	* gcc.dg/uninit-23.c: New.
+
 2016-11-22  Steven G. Kargl  <kargl@gcc.gnu.org>
 
 	PR fortran/78479
diff --git a/gcc/testsuite/gcc.dg/uninit-23.c b/gcc/testsuite/gcc.dg/uninit-23.c
new file mode 100644
index 00000000000..b38e1d08eab
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/uninit-23.c
@@ -0,0 +1,27 @@
+/* PR tree-optimization/78455 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wuninitialized" } */
+
+int ij;
+
+void
+ql (void)
+{
+  int m5 = 0;
+
+  for (;;)
+  {
+    if (0)
+      for (;;)
+      {
+        int *go;
+        int *t4 = go;
+
+ l1:
+        *t4 = (*t4 != 0) ? 0 : 2; /* { dg-warning "may be used uninitialized" } */
+      }
+
+    if (ij != 0)
+      goto l1;
+  }
+}
diff --git a/gcc/tree-ssa-uninit.c b/gcc/tree-ssa-uninit.c
index 68dcf156da2..4557403d934 100644
--- a/gcc/tree-ssa-uninit.c
+++ b/gcc/tree-ssa-uninit.c
@@ -2192,7 +2192,7 @@ can_chain_union_be_invalidated_p (pred_chain_union use_preds,
       pred_chain c = use_preds[i];
       bool entire_pred_chain_invalidated = false;
       for (size_t j = 0; j < c.length (); ++j)
-	if (can_one_predicate_be_invalidated_p (c[i], worklist))
+	if (can_one_predicate_be_invalidated_p (c[j], worklist))
 	  {
 	    entire_pred_chain_invalidated = true;
 	    break;