1 files changed, 125 insertions, 0 deletions
diff --git a/libgomp/testsuite/libgomp.c++/pr43893.C b/libgomp/testsuite/libgomp.c++/pr43893.C
new file mode 100644
index 000000000..be0b6f4ab
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c++/pr43893.C
@@ -0,0 +1,125 @@
+// PR c/43893
+// { dg-do run }
+
+extern "C" void abort ();
+
+template <typename T, T M, T N>
+void
+f1 ()
+{
+  int c;
+  T i;
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (i = M; i < N; i++)
+    c++;
+  if (c != 1)
+    abort ();
+}
+
+template <typename T, T M, T N>
+void
+f2 ()
+{
+  int c;
+  T i;
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (i = M; i <= N; i++)
+    c++;
+  if (c != 1)
+    abort ();
+}
+
+template <typename T, T M, T N>
+void
+f3 ()
+{
+  int c;
+  T i;
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (i = M; i > N; i--)
+    c++;
+  if (c != 1)
+    abort ();
+}
+
+template <typename T, T M, T N>
+void
+f4 ()
+{
+  int c;
+  T i;
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (i = M; i >= N; i--)
+    c++;
+  if (c != 1)
+    abort ();
+}
+
+int
+main ()
+{
+  int c;
+  unsigned int i;
+  int j;
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (i = 0; i < 1; i++)
+    c++;
+  if (c != 1)
+    abort ();
+  f1 <unsigned int, 0, 1> ();
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (i = 0; i <= 0; i++)
+    c++;
+  if (c != 1)
+    abort ();
+  f2 <unsigned int, 0, 0> ();
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (j = - __INT_MAX__ - 1; j < - __INT_MAX__; j++)
+    c++;
+  if (c != 1)
+    abort ();
+  f1 <int, (- __INT_MAX__ - 1), (- __INT_MAX__)> ();
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (j = - __INT_MAX__ - 1; j <= - __INT_MAX__ - 1; j++)
+    c++;
+  if (c != 1)
+    abort ();
+  f2 <int, (- __INT_MAX__ - 1), (- __INT_MAX__ - 1)> ();
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (i = 2U * __INT_MAX__ + 1; i > 2U * __INT_MAX__; i--)
+    c++;
+  if (c != 1)
+    abort ();
+  f3 <unsigned int, (2U * __INT_MAX__ + 1), (2U * __INT_MAX__)> ();
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (i = 2U * __INT_MAX__ + 1; i >= 2U * __INT_MAX__ + 1; i--)
+    c++;
+  if (c != 1)
+    abort ();
+  f4 <unsigned int, (2U * __INT_MAX__ + 1), (2U * __INT_MAX__ + 1)> ();
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (j = __INT_MAX__; j > __INT_MAX__ - 1; j--)
+    c++;
+  if (c != 1)
+    abort ();
+  f3 <int, __INT_MAX__, (__INT_MAX__ - 1)> ();
+  c = 0;
+#pragma omp parallel for reduction(+:c)
+  for (j = __INT_MAX__; j >= __INT_MAX__; j--)
+    c++;
+  if (c != 1)
+    abort ();
+  f4 <int, __INT_MAX__, __INT_MAX__> ();
+  return 0;
+}