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* [gcc(refs/users/meissner/heads/ieee)] analyzer: add test coverage for fixed ICE [PR94047]
@ 2020-03-18 17:24 Michael Meissner
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From: Michael Meissner @ 2020-03-18 17:24 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:f665beeba625490bd96a593d23e00726d969cf98
commit f665beeba625490bd96a593d23e00726d969cf98
Author: David Malcolm <dmalcolm@redhat.com>
Date: Tue Mar 10 18:50:03 2020 -0400
analyzer: add test coverage for fixed ICE [PR94047]
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.
gcc/testsuite/ChangeLog:
PR analyzer/94047
* gcc.dg/analyzer/pr94047.c: New test.
Diff:
---
gcc/testsuite/ChangeLog | 5 +++++
gcc/testsuite/gcc.dg/analyzer/pr94047.c | 23 +++++++++++++++++++++++
2 files changed, 28 insertions(+)
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 4aa798f8a48..a91d7377888 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2020-03-18 David Malcolm <dmalcolm@redhat.com>
+
+ PR analyzer/94047
+ * gcc.dg/analyzer/pr94047.c: New test.
+
2020-03-18 Richard Biener <rguenther@suse.de>
PR middle-end/94206
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);
+}
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