test 345 fails on AppVeyor

[bagder]

After 00bef95 (came via #13432) it seems test 345 permafails on some (?) appveyor builds.

example log

curl/libcurl version

git master

operating system

Windows

[bagder]

Possibly related to the ftruncate replacement function we use for Windows?

curl/src/tool_cb_see.c

Lines 108 to 119 in f33ee2e

	int tool_ftruncate64(int fd, curl_off_t where)
	{
	intptr_t handle = _get_osfhandle(fd);
	if(_lseeki64(fd, where, SEEK_SET) < 0)
	return -1;
	if(!SetEndOfFile((HANDLE)handle))
	return -1;
	return 0;
	}

It seems Windows has a _chsize_s function we could perhaps rather use there?

[vszakats]

I wonder if the manual override of HAVE_FTRUNCATE in src/tool_cb_see.h plays a role in this:

curl/src/tool_cb_see.h

Lines 28 to 38 in f33ee2e

	#if defined(_WIN32) && !defined(HAVE_FTRUNCATE)
	int tool_ftruncate64(int fd, curl_off_t where);
	#undef ftruncate
	#define ftruncate(fd,where) tool_ftruncate64(fd,where)
	#define HAVE_FTRUNCATE 1
	#define USE_TOOL_FTRUNCATE 1
	#endif /* _WIN32 && ! HAVE_FTRUNCATE */

In any case such override should be done in curl_setup.h to apply for all code in unity mode.

Haven't confirmed, but the problem could be that the replacement function isn't used in src/tool_operate.c.