clang/test/Lexer/constants.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify -Wfour-char-constants -pedantic -ftrigraphs %s
   2
   3 int x = 000000080;  // expected-error {{invalid digit}}
   4
   5 int y = 0000\
   6 00080;             // expected-error {{invalid digit}}
   7
   8
   9
  10 float X = 1.17549435e-38F;
  11 float Y = 08.123456;
  12
  13 // PR2252
  14 #if -0x8000000000000000  // should not warn.
  15 #endif
  16 #if -01000000000000000000000  // should not warn.
  17 #endif
  18 #if 9223372036854775808 // expected-warning {{integer literal is too large to be represented in a signed integer type, interpreting as unsigned}}
  19 #endif
  20 #if 0x10000000000000000 // expected-error {{integer literal is too large to be represented in any integer type}}
  21 #endif
  22
  23 int c[] = {
  24   'df',   // expected-warning {{multi-character character constant}}
  25   '\t',
  26   '\\
  27 t',
  28   '??!',  // expected-warning {{trigraph converted to '|' character}}
  29   'abcd'  // expected-warning {{multi-character character constant}}
  30 };
  31
  32 //  PR4499
  33 int m0 = '0';
  34 int m1 = '\\\''; // expected-warning {{multi-character character constant}}
  35 int m2 = '\\\\'; // expected-warning {{multi-character character constant}}
  36 int m3 = '\\\
  37 ';
  38
  39
  40 #pragma clang diagnostic ignored "-Wmultichar"
  41
  42 int d = 'df'; // no warning.
  43 int e = 'abcd';  // still warn: expected-warning {{multi-character character constant}}
  44
  45 #pragma clang diagnostic ignored "-Wfour-char-constants"
  46
  47 int f = 'abcd';  // ignored.
  48
  49 // rdar://problem/6974641
  50 float t0[] = {
  51   1.9e20f,
  52   1.9e-20f,
  53   1.9e50f,   // expected-warning {{too large}}
  54   1.9e-50f,  // expected-warning {{too small}}
  55   -1.9e20f,
  56   -1.9e-20f,
  57   -1.9e50f,  // expected-warning {{too large}}
  58   -1.9e-50f  // expected-warning {{too small}}
  59 };
  60 double t1[] = {
  61   1.9e50,
  62   1.9e-50,
  63   1.9e500,   // expected-warning {{too large}}
  64   1.9e-500,  // expected-warning {{too small}}
  65   -1.9e50,
  66   -1.9e-50,
  67   -1.9e500,  // expected-warning {{too large}}
  68   -1.9e-500  // expected-warning {{too small}}
  69 };
  70
  71 // PR7888
  72 double g = 1e100000000; // expected-warning {{too large}}
  73
  74 char h = '\u1234'; // expected-error {{character too large for enclosing character literal type}}