diff mbox series

[pushed] analyzer: fix ICE on floating-point bounds [PR111881]

Message ID 20240227134114.3490126-1-dmalcolm@redhat.com
State New
Headers show
Series [pushed] analyzer: fix ICE on floating-point bounds [PR111881] | expand

Commit Message

David Malcolm Feb. 27, 2024, 1:41 p.m. UTC 
Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
Successful run of analyzer integration tests on x86_64-pc-linux-gnu.
Pushed to trunk as r14-9195-g43ad6ce60108ac.

gcc/analyzer/ChangeLog:
	PR analyzer/111881
	* constraint-manager.cc (bound::ensure_closed): Assert that
	m_constant has integral type.
	(range::add_bound): Bail out on floating point constants.

gcc/testsuite/ChangeLog:
	PR analyzer/111881
	* c-c++-common/analyzer/conditionals-pr111881.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
---
 gcc/analyzer/constraint-manager.cc                        | 6 ++++++
 .../c-c++-common/analyzer/conditionals-pr111881.c         | 8 ++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 gcc/testsuite/c-c++-common/analyzer/conditionals-pr111881.c
diff mbox series

Patch

diff --git a/gcc/analyzer/constraint-manager.cc b/gcc/analyzer/constraint-manager.cc
index e8bcabeb0cd5..a380b95315ee 100644
--- a/gcc/analyzer/constraint-manager.cc
+++ b/gcc/analyzer/constraint-manager.cc
@@ -124,10 +124,12 @@  bound::ensure_closed (enum bound_kind bound_kind)
 	 For example, convert 3 < x into 4 <= x,
 	 and convert x < 5 into x <= 4.  */
       gcc_assert (CONSTANT_CLASS_P (m_constant));
+      gcc_assert (INTEGRAL_TYPE_P (TREE_TYPE (m_constant)));
       m_constant = fold_build2 (bound_kind == BK_UPPER ? MINUS_EXPR : PLUS_EXPR,
 				TREE_TYPE (m_constant),
 				m_constant, integer_one_node);
       gcc_assert (CONSTANT_CLASS_P (m_constant));
+      gcc_assert (INTEGRAL_TYPE_P (TREE_TYPE (m_constant)));
       m_closed = true;
     }
 }
@@ -306,6 +308,10 @@  range::above_upper_bound (tree rhs_const) const
 bool
 range::add_bound (bound b, enum bound_kind bound_kind)
 {
+  /* Bail out on floating point constants.  */
+  if (!INTEGRAL_TYPE_P (TREE_TYPE (b.m_constant)))
+    return true;
+
   b.ensure_closed (bound_kind);
 
   switch (bound_kind)
diff --git a/gcc/testsuite/c-c++-common/analyzer/conditionals-pr111881.c b/gcc/testsuite/c-c++-common/analyzer/conditionals-pr111881.c
new file mode 100644
index 000000000000..ecf165feeec2
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/analyzer/conditionals-pr111881.c
@@ -0,0 +1,8 @@ 
+/* Verify we don't ICE on certain float conditionals.  */
+
+/* { dg-additional-options "-Ofast" } */
+
+int test_pr111881 (float sf1)
+{
+  return sf1 <= 0 || sf1 >= 7 ? 0 : sf1;
+}