view gcc/testsuite/c-c++-common/ubsan/overflow-negate-3.c @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 04ced10e8804
children
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/* { dg-do run } */
/* { dg-options "-fsanitize=signed-integer-overflow" } */

#define INT_MIN (-__INT_MAX__ - 1)

int
main ()
{
  int x = INT_MIN;
  int y;
  asm ("" : "+g" (x));
  y = -(-x);
  asm ("" : "+g" (y));
  y = -(-INT_MIN);
  asm ("" : "+g" (y));
}

/* { dg-output "negation of -2147483648 cannot be represented in type 'int'\[^\n\r]*; cast to an unsigned type to negate this value to itself\[^\n\r]*(\n|\r\n|\r)" } */
/* { dg-output "\[^\n\r]*negation of -2147483648 cannot be represented in type 'int'\[^\n\r]*; cast to an unsigned type to negate this value to itself\[^\n\r]*(\n|\r\n|\r)" } */
/* { dg-output "\[^\n\r]*negation of -2147483648 cannot be represented in type 'int'\[^\n\r]*; cast to an unsigned type to negate this value to itself\[^\n\r]*(\n|\r\n|\r)" } */
/* { dg-output "\[^\n\r]*negation of -2147483648 cannot be represented in type 'int'\[^\n\r]*; cast to an unsigned type to negate this value to itself" } */