From 1f6dba54da4c437e74fbb1c92621adb33582efff Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Tue, 7 Mar 2017 07:11:14 +0100 Subject: [PATCH] re PR sanitizer/79897 (ICE in gimplify_modify_expr, at gimplify.c:5627 on ARM target) PR sanitizer/79897 * ubsan.c (ubsan_encode_value): Call mark_addressable on the temporary. * c-c++-common/ubsan/pr79897.c: New test. From-SVN: r245945 --- gcc/ChangeLog | 6 ++++++ gcc/testsuite/ChangeLog | 5 +++++ gcc/testsuite/c-c++-common/ubsan/pr79897.c | 15 +++++++++++++++ gcc/ubsan.c | 1 + 4 files changed, 27 insertions(+) create mode 100644 gcc/testsuite/c-c++-common/ubsan/pr79897.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2727acd1929..eb06b5ab2eb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2017-03-07 Jakub Jelinek + + PR sanitizer/79897 + * ubsan.c (ubsan_encode_value): Call mark_addressable on the + temporary. + 2017-03-06 Jakub Jelinek PR c++/79821 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 2f27e4b535c..9c8b87e90c7 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2017-03-07 Jakub Jelinek + + PR sanitizer/79897 + * c-c++-common/ubsan/pr79897.c: New test. + 2017-03-06 Vladimir Makarov PR rtl-optimization/79571 diff --git a/gcc/testsuite/c-c++-common/ubsan/pr79897.c b/gcc/testsuite/c-c++-common/ubsan/pr79897.c new file mode 100644 index 00000000000..0dadcffe98d --- /dev/null +++ b/gcc/testsuite/c-c++-common/ubsan/pr79897.c @@ -0,0 +1,15 @@ +/* PR sanitizer/79897 */ +/* { dg-do compile } */ +/* { dg-options "-fsanitize=enum -O2" } */ + +enum E +{ + A = 0, + B = ~0U + 1LL +} x = A; + +int +main () +{ + return x != A; +} diff --git a/gcc/ubsan.c b/gcc/ubsan.c index 11a41e1dc53..17965efde5c 100644 --- a/gcc/ubsan.c +++ b/gcc/ubsan.c @@ -145,6 +145,7 @@ ubsan_encode_value (tree t, bool in_expand_p) code by making vars unnecessarily addressable. */ tree var = create_tmp_var (type); tree tem = build2 (MODIFY_EXPR, void_type_node, var, t); + mark_addressable (var); if (in_expand_p) { rtx mem -- 2.30.2