https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70336

            Bug ID: 70336
           Summary: Incorrect Wconversion warning
           Product: gcc
           Version: 5.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jan.sm...@alcatel-lucent.com
  Target Milestone: ---

void bla(unsigned char * buffer, int offset, int position)
{
    buffer[position/8] |= (unsigned char)(0x80 >> offset);
}

/tmp/test.c: In function 'bla':
/tmp/test.c:3:27: warning: conversion to 'unsigned char' from 'int' may alter
its value [-Wconversion]
     buffer[position/8] |= (unsigned char)(0x80 >> offset);


Does not give a warning with GCC 4.8, but does with 5.3.1

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