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/* Test for diagnostics for implicit conversions between signed and

   unsigned integer types.

   C++ equivalent of gcc/testsuite/gcc.dg/Wsign-conversion.c  */

// { dg-do compile }

// { dg-options "-fsigned-char -Wsign-conversion" }

#include 

void fsc (signed char sc);

void fuc (unsigned char uc);

unsigned fui (unsigned int  ui);

void fsi (signed int ui);

void h (int x)

{

  unsigned int ui = 3;

  int   si = 3;

  unsigned char uc = 3;

  signed char   sc = 3;

  uc = ui;

  uc = si;

  sc = ui;

  sc = si;

  fuc (ui);

  fuc (si);

  fsc (ui);

  fsc (si);

  fsi (si);

  fui (ui);

  fsi (uc);

  si = uc;

  fui (uc);

  ui = uc;

  fui ('A');

  ui = 'A';

  fsi ('A');

  si = 'A';

  fuc ('A');

  uc = 'A';

  uc = x ? 1U : -1; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  uc = x ? SCHAR_MIN : 1U;  /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  uc = x ? 1 : -1; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  uc = x ? SCHAR_MIN : 1; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  ui = x ? 1U : -1; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  ui = x ? INT_MIN : 1U; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  ui = ui ? SCHAR_MIN : 1U; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  ui = 1U * -1; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  ui = ui + INT_MIN; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  ui = x ? 1 : -1; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  ui = ui ? SCHAR_MIN : 1; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  fuc (-1); /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  uc = -1;  /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  fui (-1); /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  ui = -1; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  fuc ('\xa0'); /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  uc = '\xa0'; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  fui ('\xa0');/* { dg-warning "negative integer implicitly converted to unsigned type" } */

  ui = '\xa0'; /* { dg-warning "negative integer implicitly converted to unsigned type" } */

  fsi (0x80000000); /* { dg-warning "conversion" } */

  si = 0x80000000;  /* { dg-warning "conversion" } */

  fsi (UINT_MAX - 1);  /* { dg-warning "conversion" } */

  si = UINT_MAX - 1;   /* { dg-warning "conversion" } */

  fsi (UINT_MAX - 1U); /* { dg-warning "conversion" } */

  si = UINT_MAX - 1U;  /* { dg-warning "conversion" } */

  fsi (UINT_MAX/3U);

  si = UINT_MAX/3U;

  fsi (UINT_MAX/3);

  si = UINT_MAX/3;

  fui (UINT_MAX - 1);

  ui = UINT_MAX - 1;

  uc = (unsigned char) -1;

  ui = -1 * (1 * -1);

  ui = (unsigned) -1;

  fsc (uc); /* { dg-warning "conversion" } */

  sc = uc;  /* { dg-warning "conversion" } */

  fuc (sc); /* { dg-warning "conversion" } */

  uc = sc;  /* { dg-warning "conversion" } */

  fsi (ui); /* { dg-warning "conversion" } */

  si = ui;  /* { dg-warning "conversion" } */

  fui (si); /* { dg-warning "conversion" } */

  ui = si;  /* { dg-warning "conversion" } */

  fui (sc); /* { dg-warning "conversion" } */

  ui = sc;  /* { dg-warning "conversion" } */

}

unsigned fui (unsigned a) { return a + -1; } /* { dg-warning "negative integer implicitly converted to unsigned type" } */