Avoid applying unary minus to unsigned integers. Patch from STL@microsoft.com

llvm-svn: 274203
diff --git a/libcxx/test/std/depr/depr.c.headers/stdint_h.pass.cpp b/libcxx/test/std/depr/depr.c.headers/stdint_h.pass.cpp
index 92bb04e..3d49111 100644
--- a/libcxx/test/std/depr/depr.c.headers/stdint_h.pass.cpp
+++ b/libcxx/test/std/depr/depr.c.headers/stdint_h.pass.cpp
@@ -171,8 +171,8 @@
     // INTN_MIN
     static_assert(INT8_MIN == -128, "INT8_MIN == -128");
     static_assert(INT16_MIN == -32768, "INT16_MIN == -32768");
-    static_assert(INT32_MIN == -2147483648U, "INT32_MIN == -2147483648");
-    static_assert(INT64_MIN == -9223372036854775808ULL, "INT64_MIN == -9223372036854775808LL");
+    static_assert(INT32_MIN == -2147483647 - 1, "INT32_MIN == -2147483648");
+    static_assert(INT64_MIN == -9223372036854775807LL - 1, "INT64_MIN == -9223372036854775808LL");
 
     // INTN_MAX
     static_assert(INT8_MAX == 127, "INT8_MAX == 127");
@@ -189,8 +189,8 @@
     // INT_FASTN_MIN
     static_assert(INT_FAST8_MIN <= -128, "INT_FAST8_MIN <= -128");
     static_assert(INT_FAST16_MIN <= -32768, "INT_FAST16_MIN <= -32768");
-    static_assert(INT_FAST32_MIN <= -2147483648U, "INT_FAST32_MIN <= -2147483648");
-    static_assert(INT_FAST64_MIN <= -9223372036854775808ULL, "INT_FAST64_MIN <= -9223372036854775808LL");
+    static_assert(INT_FAST32_MIN <= -2147483647 - 1, "INT_FAST32_MIN <= -2147483648");
+    static_assert(INT_FAST64_MIN <= -9223372036854775807LL - 1, "INT_FAST64_MIN <= -9223372036854775808LL");
 
     // INT_FASTN_MAX
     static_assert(INT_FAST8_MAX >= 127, "INT_FAST8_MAX >= 127");