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C++ PATCH for c++/57532 (bogus error with int() & int())
- From: Jason Merrill <jason at redhat dot com>
- To: gcc-patches List <gcc-patches at gcc dot gnu dot org>
- Date: Tue, 09 Jul 2013 13:41:54 -0400
- Subject: C++ PATCH for c++/57532 (bogus error with int() & int())
In C++98 mode we were complaining about trying to apply a ref-qualifier
to the function type int() during tentative parsing; the easiest fix is
just not to try to tentatively parse ref-qualifiers in C++98 mode, which
also lets us fail the tentative parse faster.
Tested x86_64-pc-linux-gnu, applying to trunk and 4.8.
commit 7d3bb96439735e08dd02af1e6d031b9a676dacb3
Author: Jason Merrill <jason@redhat.com>
Date: Tue Jul 9 02:34:46 2013 -0400
PR c++/57532
* parser.c (cp_parser_ref_qualifier_opt): Don't tentatively parse
a ref-qualifier in C++98 mode.
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index e2c3c3e..614cf43 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -17374,6 +17374,10 @@ cp_parser_ref_qualifier_opt (cp_parser* parser)
{
cp_ref_qualifier ref_qual = REF_QUAL_NONE;
+ /* Don't try to parse bitwise '&' as a ref-qualifier (c++/57532). */
+ if (cxx_dialect < cxx11 && cp_parser_parsing_tentatively (parser))
+ return ref_qual;
+
while (true)
{
cp_ref_qualifier curr_ref_qual = REF_QUAL_NONE;
diff --git a/gcc/testsuite/g++.dg/parse/ref-qual2.C b/gcc/testsuite/g++.dg/parse/ref-qual2.C
new file mode 100644
index 0000000..a78597b
--- /dev/null
+++ b/gcc/testsuite/g++.dg/parse/ref-qual2.C
@@ -0,0 +1,6 @@
+// PR c++/57532
+
+int main()
+{
+ return (int() & int());
+}