obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 27 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/warn/pr36921.C b/gcc/testsuite/g++.dg/warn/pr36921.C
new file mode 100644
index 000000000..739366910
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/pr36921.C
@@ -0,0 +1,27 @@
+/* PR 36921: comparison operator can be overloaded. Do not emit
+   warnings in such case.
+ { dg-do compile }
+ { dg-options "-Wparentheses" }
+*/
+struct A {};
+A operator<(A, A) { return A(); }
+A operator>(A, A) { return A(); }
+A operator<=(A, A) { return A(); }
+A operator>=(A, A) { return A(); }
+A operator==(A, A) { return A(); }
+A operator!=(A, A) { return A(); }
+
+int main() {
+  A() < A() < A(); // should not emit warning
+  1 < 2 < 3; // { dg-warning "mathematical meaning" "parentheses" }
+  A() > A() > A(); // should not emit warning
+  1 > 2 > 3; // { dg-warning "mathematical meaning" "parentheses" }
+  A() <= A() <= A(); // should not emit warning
+  1 <= 2 <= 3; // { dg-warning "mathematical meaning" "parentheses" }
+  A() >= A() >= A(); // should not emit warning
+  1 >= 2 >= 3; // { dg-warning "mathematical meaning" "parentheses" }
+
+  A() == A() < A (); // { dg-warning "suggest parentheses" "parentheses" }
+  A() < A() != A (); // { dg-warning "suggest parentheses" "parentheses" }
+  return 0;
+}