https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39438

R. Diez <rdiez-2006 at rd10 dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rdiez-2006 at rd10 dot de

--- Comment #14 from R. Diez <rdiez-2006 at rd10 dot de> ---
This is another code example:

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// Compile with -Wformat -Wformat-nonliteral

#include <time.h>

// For strftime formats, the third parameter in "__attribute__ format"
// below is required to be zero.
__attribute__ ((format (strftime, 3, 0)))
size_t strftime_e ( char * const buffer,
                    const size_t buffermax,
                    const char * const formatstr,
                    const tm * const tm )
{
  // This is the work-around to suppress the warning:
  // #pragma GCC diagnostic push
  // #pragma GCC diagnostic ignored "-Wformat-nonliteral"

  return strftime( buffer, buffermax, formatstr, tm );

  // #pragma GCC diagnostic pop
}

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It shows a work-around to suppress the warning, and is available here to play
with:

https://godbolt.org/z/EYzE3xMYc

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