1 files changed, 84 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/warn/Wtype-limits-no.C b/gcc/testsuite/g++.dg/warn/Wtype-limits-no.C
new file mode 100644
index 000000000..5040e2657
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wtype-limits-no.C
@@ -0,0 +1,84 @@
+/* Test disabling -Wtype-limits.  */
+/* { dg-do compile } */
+/* { dg-options "-Wextra -Wno-type-limits" } */
+extern void assert (int);
+
+void a (unsigned char x)
+{
+  if (x < 0)  return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
+  if (x >= 0) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
+  if (0 > x)  return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
+  if (0 <= x) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
+  if (x <= 255) /* { dg-bogus "comparison is always true due to limited range of data type" } */
+    return;
+  if (255 >= x) /* { dg-bogus "comparison is always true due to limited range of data type" } */
+    return;
+  if ((int)x <= 255) 
+    return;
+  if (255 >= (unsigned char) 1)
+    return;
+
+}
+
+void b (unsigned short x)
+{
+  if (x < 0)  return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
+  if (x >= 0) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
+  if (0 > x)  return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
+  if (0 <= x) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
+}
+
+void c (unsigned int x)
+{
+  if (x < 0)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
+  if (x >= 0) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
+  if (0 > x)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
+  if (0 <= x) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
+  if (1U >= 0) return;
+  if (1U < 0) return;
+  if (0 <= 1U) return;
+  if (0 > 1U) return;
+}
+
+void d (unsigned long x)
+{
+  if (x < 0)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
+  if (x >= 0) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
+  if (0 > x)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
+  if (0 <= x) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
+}
+
+void e (unsigned long long x)
+{
+  if (x < 0)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
+  if (x >= 0) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
+  if (0 > x)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
+  if (0 <= x) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
+}
+
+int test (int x) 
+{
+  if ((long long)x <= 0x123456789ABCLL) /* { dg-bogus "comparison is always true due to limited range of data type" } */
+    return 1;
+  else 
+    return 0;
+}
+
+template <typename Int, Int D>
+void f(Int x) {
+  assert(0 <= x and x <= D); // { dg-bogus "comparison is always true due to limited range of data type" }
+}
+
+int ff(void) {
+  f<unsigned char, 2>(5);
+  f<signed char, 2>(5);
+}
+
+template <typename Int, Int D>
+void g(void) {
+  assert(0 <= D);
+}
+int gg(void) {
+  g<unsigned char, 2>();
+}
+