[Bug c++/78858] Bogus -Wnonnull warning involving strcmp.

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78858

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2016-12-19
                 CC|                            |marxin at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Can you please attach self-contained test-case (either created by -E) or by
modifying mine, which does not show the problem:

#include <stdio.h>
#include <string.h>

void foo (const char *a);

struct A
{
  int
  main (void)
  {
    int j = argc ? 1 : 0;
    for (int i = 1; i < argc; ++i)
      {
        if (!argv[i])
          continue;
        if (*argv[i] != '-')
          {
            argv[j++] = argv[i];
            continue;
          }
        const char *arg = argv[i];
        if (arg[1] == '-') // startsWith("--")
          ++arg;
        if (__builtin_strncmp (arg, "-qmljsdebugger=", 15) == 0)
          foo (arg + 15);
      }
  }

  int argc;
  char **argv;
};

int
main ()
{
  A a;
  a.main ();
}