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C++ PATCH for c++/48369 (ICE with isnan)
- From: Jason Merrill <jason at redhat dot com>
- To: gcc-patches List <gcc-patches at gcc dot gnu dot org>
- Date: Wed, 30 Mar 2011 15:50:02 -0400
- Subject: C++ PATCH for c++/48369 (ICE with isnan)
A couple of missed cases.
Tested x86_64-pc-linux-gnu, applying to trunk and 4.6.
commit cea17025eb232f3931ce34e16dedff7fd42d2478
Author: Jason Merrill <jason@redhat.com>
Date: Wed Mar 30 15:17:27 2011 -0400
PR c++/48369
* semantics.c (potential_constant_expression_1): Handle
UNORDERED_EXPR and ORDERED_EXPR.
diff --git a/gcc/cp/semantics.c b/gcc/cp/semantics.c
index b88e190..48dd4ee 100644
--- a/gcc/cp/semantics.c
+++ b/gcc/cp/semantics.c
@@ -7741,6 +7741,8 @@ potential_constant_expression_1 (tree t, bool want_rval, tsubst_flags_t flags)
case BIT_XOR_EXPR:
case BIT_AND_EXPR:
case TRUTH_XOR_EXPR:
+ case UNORDERED_EXPR:
+ case ORDERED_EXPR:
case UNLT_EXPR:
case UNLE_EXPR:
case UNGT_EXPR:
diff --git a/gcc/testsuite/g++.dg/cpp0x/regress/isnan.C b/gcc/testsuite/g++.dg/cpp0x/regress/isnan.C
new file mode 100644
index 0000000..40d07e5
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/regress/isnan.C
@@ -0,0 +1,9 @@
+// PR c++/48369
+// { dg-options -std=gnu++0x }
+
+extern "C" int isnan (double);
+
+void f(double d)
+{
+ bool b = isnan(d);
+}