PR analyzer/94047 reports an ICE, which turned out to be caused
by the erroneous use of TREE_TYPE on the view region's type
in region_model::get_representative_path_var that I introduced
in r10-7024-ge516294a1acb28aaaad44cfd583cc6a80354044e and
fixed in g:787477a226033e36be3f6d16b71be13dd917e982.
This patch adds a regression test for the ICE.
Successfully regrtested on x86_64-pc-linux-gnu.
Pushed to master as f665beeba625490bd96a593d23e00726d969cf98.
gcc/testsuite/ChangeLog:
PR analyzer/94047
* gcc.dg/analyzer/pr94047.c: New test.
---
gcc/testsuite/gcc.dg/analyzer/pr94047.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/analyzer/pr94047.c
diff --git a/gcc/testsuite/gcc.dg/analyzer/pr94047.c
b/gcc/testsuite/gcc.dg/analyzer/pr94047.c
new file mode 100644
index 00000000000..d989a254c9e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/pr94047.c
@@ -0,0 +1,23 @@
+/* { dg-additional-options "-Wno-analyzer-too-complex" } */
+/* TODO: the above ought not to be necessary, but currently is due to a
+ state explosion within the for loop. */
+
+typedef struct list
+{
+ struct list *next;
+} tlist;
+
+void
+bar (struct list *l)
+{
+ l->next = l->next->next;
+}
+
+void
+foo (void)
+{
+ struct list l;
+ tlist t = l;
+ for (;;)
+ bar (&t);
+}
--
2.21.0
