From: Marek Polacek <mpolacek@gcc.gnu.org>
Date: Fri, 1 Sep 2017 09:22:57 +0000 (+0000)
Subject: re PR c++/82040 (ICE with -Wbool-operation and ~)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=8dc9277a90672a0b2d5a18bd989c6d99ca362746;p=gcc.git

re PR c++/82040 (ICE with -Wbool-operation and ~)

	PR c++/82040
	* typeck.c (cp_build_unary_op): Avoid re-entering reporting routines.

	* g++.dg/warn/Wbool-operation-1.C: New test.

From-SVN: r251581
---

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 4a791ddbbb4..e27f04c2b65 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2017-09-01  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/82040
+	* typeck.c (cp_build_unary_op): Avoid re-entering reporting routines.
+
 2017-08-30  Jason Merrill  <jason@redhat.com>
 
 	PR c++/82029 - __PRETTY_FUNCTION__ in lambda in template
diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c
index 171c2dfb57c..0a09998aa21 100644
--- a/gcc/cp/typeck.c
+++ b/gcc/cp/typeck.c
@@ -5982,6 +5982,7 @@ cp_build_unary_op (enum tree_code code, tree xarg, bool noconvert,
 	{
 	  /* Warn if the expression has boolean value.  */
 	  if (TREE_CODE (TREE_TYPE (arg)) == BOOLEAN_TYPE
+	      && (complain & tf_warning)
 	      && warning_at (location, OPT_Wbool_operation,
 			     "%<~%> on an expression of type bool"))
 	    inform (location, "did you mean to use logical not (%<!%>)?");
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index cd63ace8250..7e9f1591b51 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,7 +1,12 @@
+2017-09-01  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/82040
+	* g++.dg/warn/Wbool-operation-1.C: New test.
+
 2017-08-31  Claudiu Zissulescu  <claziss@synopsys.com>
 
 	* gcc.target/arc/sdata-5.c: New test.
-        * gcc.target/arc/arc700-stld-hazard.c: Update test options.
+	* gcc.target/arc/arc700-stld-hazard.c: Update test options.
 
 2017-08-31  Claudiu Zissulescu  <claziss@synopsys.com>
 
diff --git a/gcc/testsuite/g++.dg/warn/Wbool-operation-1.C b/gcc/testsuite/g++.dg/warn/Wbool-operation-1.C
new file mode 100644
index 00000000000..4512b858287
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wbool-operation-1.C
@@ -0,0 +1,11 @@
+// PR c++/82040
+// { dg-do compile { target c++11 } }
+// { dg-options "-Wbool-operation" }
+
+template <class c>
+decltype (~c{})
+call ()
+{
+  return ~false; // { dg-warning "on an expression of type bool" }
+}
+template int call<bool>();