[gcc r10-7768] inliner: Don't ICE on NULL TYPE_DOMAIN [PR94621]

[gcc r10-7768] inliner: Don't ICE on NULL TYPE_DOMAIN [PR94621]

[Jakub Jelinek]

https://gcc.gnu.org/g:c58cb6ac6891886b7aa01c440ac71a5e7cbcba97

commit r10-7768-gc58cb6ac6891886b7aa01c440ac71a5e7cbcba97
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Fri Apr 17 09:07:49 2020 +0200

    inliner: Don't ICE on NULL TYPE_DOMAIN [PR94621]
    
    When I've added the VLA tweak for OpenMP to avoid error_mark_nodes in the IL in
    type, I forgot that TYPE_DOMAIN could be NULL.  Furthermore, as an optimization,
    this patch checks the hopefully cheapest condition that is very likely false
    most of the time (enabled only during OpenMP handling) first.
    
    2020-04-17  Jakub Jelinek  <jakub@redhat.com>
    
            PR tree-optimization/94621
            * tree-inline.c (remap_type_1): Don't dereference NULL TYPE_DOMAIN.
            Move id->adjust_array_error_bounds check first in the condition.
    
            * gcc.c-torture/compile/pr94621.c: New test.

Diff:
---
 gcc/ChangeLog                                 |  6 ++++++
 gcc/testsuite/ChangeLog                       |  3 +++
 gcc/testsuite/gcc.c-torture/compile/pr94621.c | 16 ++++++++++++++++
 gcc/tree-inline.c                             |  5 +++--
 4 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 80a37618d75..80b0534ba51 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2020-04-17  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/94621
+	* tree-inline.c (remap_type_1): Don't dereference NULL TYPE_DOMAIN.
+	Move id->adjust_array_error_bounds check first in the condition.
+
 2020-04-17  Martin Liska  <mliska@suse.cz>
 	    Jonathan Yong <10walls@gmail.com>
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1341eb2745a..64181e4e532 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2020-04-17  Jakub Jelinek  <jakub@redhat.com>
 
+	PR tree-optimization/94621
+	* gcc.c-torture/compile/pr94621.c: New test.
+
 	PR c++/94314
 	* g++.dg/pr94314-4.C: Require c++14 rather than c++11.
 
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr94621.c b/gcc/testsuite/gcc.c-torture/compile/pr94621.c
new file mode 100644
index 00000000000..0d98dfd53a5
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr94621.c
@@ -0,0 +1,16 @@
+/* PR tree-optimization/94621 */
+
+struct S { int c, e[]; };
+
+static inline int
+foo (struct S *m, int r, int c)
+{
+  int (*a)[][m->c] = (int (*)[][m->c])&m->e;
+  return (*a)[r][c];
+}
+
+void
+bar (struct S *a)
+{
+  foo (a, 0, 0);
+}
diff --git a/gcc/tree-inline.c b/gcc/tree-inline.c
index f095795f06f..26c23f504be 100644
--- a/gcc/tree-inline.c
+++ b/gcc/tree-inline.c
@@ -556,8 +556,9 @@ remap_type_1 (tree type, copy_body_data *id)
 	  /* For array bounds where we have decided not to copy over the bounds
 	     variable which isn't used in OpenMP/OpenACC region, change them to
 	     an uninitialized VAR_DECL temporary.  */
-	  if (TYPE_MAX_VALUE (TYPE_DOMAIN (new_tree)) == error_mark_node
-	      && id->adjust_array_error_bounds
+	  if (id->adjust_array_error_bounds
+	      && TYPE_DOMAIN (new_tree)
+	      && TYPE_MAX_VALUE (TYPE_DOMAIN (new_tree)) == error_mark_node
 	      && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != error_mark_node)
 	    {
 	      tree v = create_tmp_var (TREE_TYPE (TYPE_DOMAIN (new_tree)));