1 files changed, 31 insertions, 0 deletions
diff --git a/clang/test/Sema/constant-conversion.c b/clang/test/Sema/constant-conversion.c
index 13763339671..74a469d08a9 100644
--- a/clang/test/Sema/constant-conversion.c
+++ b/clang/test/Sema/constant-conversion.c
@@ -80,3 +80,34 @@ void test8() {
   struct { enum E x : 1; } f;
   f.x = C; // expected-warning {{implicit truncation from 'int' to bitfield changes value from 2 to 0}}
 }
+
+void test9() {
+  const char max_char = 0x7F;
+  const short max_short = 0x7FFF;
+  const int max_int = 0x7FFFFFFF;
+
+  const short max_char_plus_one = (short)max_char + 1;
+  const int max_short_plus_one = (int)max_short + 1;
+  const long max_int_plus_one = (long)max_int + 1;
+
+  char new_char = max_char_plus_one;  // expected-warning {{implicit conversion from 'const short' to 'char' changes value from 128 to -128}}
+  short new_short = max_short_plus_one;  // expected-warning {{implicit conversion from 'const int' to 'short' changes value from 32768 to -32768}}
+  int new_int = max_int_plus_one;  // expected-warning {{implicit conversion from 'const long' to 'int' changes value from 2147483648 to -2147483648}}
+
+  char hex_char = 0x80;
+  short hex_short = 0x8000;
+  int hex_int = 0x80000000;
+
+  char oct_char = 0200;
+  short oct_short = 0100000;
+  int oct_int = 020000000000;
+
+  char bin_char = 0b10000000;
+  short bin_short = 0b1000000000000000;
+  int bin_int = 0b10000000000000000000000000000000;
+
+#define CHAR_MACRO_HEX 0xff
+  char macro_char_hex = CHAR_MACRO_HEX;
+#define CHAR_MACRO_DEC 255
+  char macro_char_dec = CHAR_MACRO_DEC;  // expected-warning {{implicit conversion from 'int' to 'char' changes value from 255 to -1}}
+}