From: Martin Jambor <mjambor@suse.cz>
Date: Fri, 21 Dec 2012 22:28:40 +0000 (+0100)
Subject: re PR tree-optimization/55355 (internal compiler error: in tree_low_cst, at tree... 
X-Git-Tag: releases/gcc-4.6.4~228
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=35a74ec14e698d26e377e0b7f844b6b8f5e1701a;p=thirdparty%2Fgcc.git

re PR tree-optimization/55355 (internal compiler error: in tree_low_cst, at tree.c:6415)

2012-12-21  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/55355
	* tree-sra.c (type_internals_preclude_sra_p): Also check that
	bit_position is small enough to fit a single HOST_WIDE_INT.

	* testsuite/g++.dg/torture/pr55355.C: New test.

From-SVN: r194686
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dd882bf1d229..a9b503665bfa 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-12-21  Martin Jambor  <mjambor@suse.cz>
+
+	PR tree-optimization/55355
+	* tree-sra.c (type_internals_preclude_sra_p): Also check that
+	bit_position is small enough to fit a single HOST_WIDE_INT.
+
 2012-12-11  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR target/54121
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index ba4f111370fc..849d43206092 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-12-21  Martin Jambor  <mjambor@suse.cz>
+
+	PR tree-optimization/55355
+	* g++.dg/torture/pr55355.C: New test.
+
 2012-12-01  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	* gcc.dg/torture/pr52407.c: Add "-fno-common" option on hppa*-*-hpux*.
diff --git a/gcc/testsuite/g++.dg/torture/pr55355.C b/gcc/testsuite/g++.dg/torture/pr55355.C
new file mode 100644
index 000000000000..6d8f8b6be1ec
--- /dev/null
+++ b/gcc/testsuite/g++.dg/torture/pr55355.C
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+
+struct A
+{
+    void funcA(void);
+};
+
+struct B {};
+
+struct C
+{
+    void funcC(void) { a_mp->funcA(); }
+
+    char buf_ma[268435456];
+    A   *a_mp;
+    B    b_m;
+};
+
+void
+func(C *c_p)
+{
+    c_p->funcC();
+}
diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c
index 7f91a936506f..17a27d04e3f3 100644
--- a/gcc/tree-sra.c
+++ b/gcc/tree-sra.c
@@ -666,6 +666,7 @@ type_internals_preclude_sra_p (tree type)
 		|| !DECL_FIELD_OFFSET (fld) || !DECL_SIZE (fld)
 		|| !host_integerp (DECL_FIELD_OFFSET (fld), 1)
 		|| !host_integerp (DECL_SIZE (fld), 1)
+		|| !host_integerp (bit_position (fld), 0)
 		|| (AGGREGATE_TYPE_P (ft)
 		    && int_bit_position (fld) % BITS_PER_UNIT != 0))
 	      return true;