From b2ecb7a8e6b40cf61fb4e3e8b162bf466471dd3c Mon Sep 17 00:00:00 2001
From: Richard Guenther <rguenther@suse.de>
Date: Tue, 3 Jan 2006 09:15:08 +0000
Subject: [PATCH] re PR c/25183 (internal compiler error triggered by overflow
in constant expression)
2006-01-03 Richard Guenther <rguenther@suse.de>
PR c/25183
* stmt.c (add_case_node): Make sure to clear overflow flags
from ranges.
* gcc.dg/torture/pr25183.c: New testcase.
From-SVN: r109272
---
gcc/ChangeLog | 6 ++++++
gcc/stmt.c | 8 +++++---
gcc/testsuite/ChangeLog | 5 +++++
gcc/testsuite/gcc.dg/torture/pr25183.c | 22 ++++++++++++++++++++++
4 files changed, 38 insertions(+), 3 deletions(-)
create mode 100644 gcc/testsuite/gcc.dg/torture/pr25183.c
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dd9feb59d052..0c5c29f8998e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2006-01-03 Richard Guenther <rguenther@suse.de>
+
+ PR c/25183
+ * stmt.c (add_case_node): Make sure to clear overflow flags
+ from ranges.
+
2006-01-03 Jakub Jelinek <jakub@redhat.com>
Merge from gomp-branch.
diff --git a/gcc/stmt.c b/gcc/stmt.c
index ad75392010b3..02ec490d9280 100644
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -2104,10 +2104,12 @@ add_case_node (struct case_node *head, tree type, tree low, tree high,
}
- /* Add this label to the chain. */
+ /* Add this label to the chain. Make sure to drop overflow flags. */
r = ggc_alloc (sizeof (struct case_node));
- r->low = low;
- r->high = high;
+ r->low = build_int_cst_wide (TREE_TYPE (low), TREE_INT_CST_LOW (low),
+ TREE_INT_CST_HIGH (low));
+ r->high = build_int_cst_wide (TREE_TYPE (high), TREE_INT_CST_LOW (high),
+ TREE_INT_CST_HIGH (high));
r->code_label = label;
r->parent = r->left = NULL;
r->right = head;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1acf301b8de6..4199859bed9f 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2006-01-03 Richard Guenther <rguenther@suse.de>
+
+ PR c/25183
+ * gcc.dg/torture/pr25183.c: New testcase.
+
2006-01-03 Jakub Jelinek <jakub@redhat.com>
Merge from gomp-branch.
diff --git a/gcc/testsuite/gcc.dg/torture/pr25183.c b/gcc/testsuite/gcc.dg/torture/pr25183.c
new file mode 100644
index 000000000000..a6c624cf4722
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr25183.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-pedantic" } */
+
+enum err {
+ err_IO = 0x8a450000, /* { dg-warning "int" } */
+ err_NM,
+ err_EOF,
+ err_SE,
+ err_PT
+};
+static enum err E_;
+int error()
+{
+ switch (E_) {
+ case err_IO : break; /* { dg-warning "overflow" } */
+ case err_NM : break; /* { dg-warning "overflow" } */
+ case err_EOF : break; /* { dg-warning "overflow" } */
+ case err_SE : break; /* { dg-warning "overflow" } */
+ case err_PT : break; /* { dg-warning "overflow" } */
+ default : return 0;
+ }
+}
--
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