gcc/testsuite/gcc.dg/init-string-2.c

   1 /* Character arrays but not arrays of compatible enum type may be
   2    initialized by narrow string literals.  Arrays of type compatible
   3    with wchar_t, including compatible enums, may be initialized by
   4    wide string literals.  Use -fshort-enums -fshort-wchar so the
   5    relevant circumstances can be obtained portably; may still fail if
   6    char, short and int do not all have distinct precisions.  */
   7 /* { dg-do compile } */
   8 /* { dg-require-effective-target int32plus } */
   9 /* { dg-options "-std=c99 -pedantic-errors -fshort-enums -fshort-wchar" } */
  10
  11 #include <limits.h>
  12 #include <stddef.h>
  13
  14 typedef enum { schar_min = SCHAR_MIN, schar_max = SCHAR_MAX } schar;
  15 typedef enum { uchar_max = UCHAR_MAX } uchar;
  16 typedef enum { shrt_min = SHRT_MIN, shrt_max = SHRT_MAX } sshrt;
  17 typedef enum { ushrt_max = USHRT_MAX } ushrt;
  18
  19 char a0[] = "foo";
  20 const signed char a2[4] = "foo";
  21 volatile unsigned char a3[3] = "foo";
  22 wchar_t a4[] = L"foo";
  23 const wchar_t a5[3] = L"foo";
  24 volatile ushrt a6[] = L"foo";
  25
  26 schar a7[] = "foo"; /* { dg-error "string constant" "a7" } */
  27 uchar a8[] = "foo"; /* { dg-error "string constant" "a8" } */
  28 const schar a9[] = "foo"; /* { dg-error "string constant" "a9" } */
  29 short a10[] = L"foo"; /* { dg-error "string constant" "a10" } */
  30 const sshrt a11[] = L"foo"; /* { dg-error "string constant" "a11" } */
  31 char a12[] = L"foo"; /* { dg-error "from wide string" "a12" } */
  32 wchar_t a13[] = "foo"; /* { dg-error "non-wide string" "a13" } */
  33
  34 char b0[] = { "foo" };
  35 const signed char b2[4] = { "foo" };
  36 volatile unsigned char b3[3] = { "foo" };
  37 wchar_t b4[] = { L"foo" };
  38 const wchar_t b5[3] = { L"foo" };
  39 volatile ushrt b6[] = { L"foo" };
  40
  41 schar b7[] = { "foo" }; /* { dg-error "string constant" "b7" } */
  42 uchar b8[] = { "foo" }; /* { dg-error "string constant" "b8" } */
  43 const schar b9[] = { "foo" }; /* { dg-error "string constant" "b9" } */
  44 short b10[] = { L"foo" }; /* { dg-error "string constant" "b10" } */
  45 const sshrt b11[] = { L"foo" }; /* { dg-error "string constant" "b11" } */
  46 char b12[] = { L"foo" }; /* { dg-error "from wide string" "b12" } */
  47 wchar_t b13[] = { "foo" }; /* { dg-error "non-wide string" "b13" } */
  48
  49 struct s { signed char a[10]; int b; ushrt c[10]; };
  50
  51 struct s c = { "foo", 0, L"bar" };
  52 struct s d = { .c = L"bar", .a = "foo" };
  53
  54 ushrt *e = (ushrt [7]){ L"bar" };
  55
  56 wchar_t f[5][5] = { L"foo", L"bar" };
  57 ushrt g[5][5] = { L"foo", L"bar" };