test/Lexer/constants.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify -pedantic -trigraphs %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
  17
  18 int c[] = {
  19   'df',   // expected-warning {{multi-character character constant}}
  20   '\t',
  21   '\\
  22 t',
  23   '??!',  // expected-warning {{trigraph converted to '|' character}}
  24   'abcd'  // expected-warning {{multi-character character constant}}
  25 };
  26
  27 //  PR4499
  28 int m0 = '0';
  29 int m1 = '\\\''; // expected-warning {{multi-character character constant}}
  30 int m2 = '\\\\'; // expected-warning {{multi-character character constant}}
  31 int m3 = '\\\
  32 ';
  33
  34
  35 #pragma clang diagnostic ignored "-Wmultichar"
  36
  37 int d = 'df'; // no warning.
  38 int e = 'abcd';  // still warn: expected-warning {{multi-character character constant}}
  39
  40 #pragma clang diagnostic ignored "-Wfour-char-constants"
  41
  42 int f = 'abcd';  // ignored.
  43
  44 // rdar://problem/6974641
  45 float t0[] = {
  46   1.9e20f,
  47   1.9e-20f,
  48   1.9e50f,   // expected-warning {{too large}}
  49   1.9e-50f,  // expected-warning {{too small}}
  50   -1.9e20f,
  51   -1.9e-20f,
  52   -1.9e50f,  // expected-warning {{too large}}
  53   -1.9e-50f  // expected-warning {{too small}}
  54 };
  55 double t1[] = {
  56   1.9e50,
  57   1.9e-50,
  58   1.9e500,   // expected-warning {{too large}}
  59   1.9e-500,  // expected-warning {{too small}}
  60   -1.9e50,
  61   -1.9e-50,
  62   -1.9e500,  // expected-warning {{too large}}
  63   -1.9e-500  // expected-warning {{too small}}
  64 };
  65
  66 // PR7888
  67 double g = 1e100000000; // expected-warning {{too large}}