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msvcirt: Reset the pointers on file sync in most cases. 

Signed-off-by: Iván Matellanes <matellanes.ivan@gmail.com>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Iván Matellanes 2016-07-11 11:34:56 +01:00 committed by Alexandre Julliard
parent e6c85e8436
commit 5101a90bca
2 changed files with 42 additions and 2 deletions
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4
dlls/msvcirt/msvcirt.c
View File

@ -1126,8 +1126,8 @@ int __thiscall filebuf_sync(filebuf *this)
count = this->base.pptr - this->base.pbase; count = this->base.pptr - this->base.pbase;
if (count > 0 && _write(this->fd, this->base.pbase, count) != count) if (count > 0 && _write(this->fd, this->base.pbase, count) != count)
return EOF; return EOF;
this->base.pbase = this->base.pptr = this->base.epptr = NULL;
} }
this->base.pbase = this->base.pptr = this->base.epptr = NULL;
/* flush input buffer */ /* flush input buffer */
if (this->base.egptr != NULL) { if (this->base.egptr != NULL) {
offset = this->base.egptr - this->base.gptr; offset = this->base.egptr - this->base.gptr;
@ -1143,8 +1143,8 @@ int __thiscall filebuf_sync(filebuf *this)
if (_lseek(this->fd, -offset, SEEK_CUR) < 0) if (_lseek(this->fd, -offset, SEEK_CUR) < 0)
return EOF; return EOF;
} }
this->base.eback = this->base.gptr = this->base.egptr = NULL;
} }
this->base.eback = this->base.gptr = this->base.egptr = NULL;
return 0; return 0;
} }

40
dlls/msvcirt/tests/msvcirt.c
View File

@ -1419,6 +1419,46 @@ static void test_filebuf(void)
ok(fb1.base.gptr == NULL, "wrong get pointer, expected %p got %p\n", NULL, fb1.base.gptr); ok(fb1.base.gptr == NULL, "wrong get pointer, expected %p got %p\n", NULL, fb1.base.gptr);
ok(fb1.base.pptr == NULL, "wrong put pointer, expected %p got %p\n", NULL, fb1.base.pptr); ok(fb1.base.pptr == NULL, "wrong put pointer, expected %p got %p\n", NULL, fb1.base.pptr);
ok(_tell(fb1.fd) == 0, "_tell failed\n"); ok(_tell(fb1.fd) == 0, "_tell failed\n");
fb1.base.pbase = fb1.base.pptr = fb1.base.base;
ret = (int) call_func1(p_filebuf_sync, &fb1);
ok(ret == 0, "wrong return, expected 0 got %d\n", ret);
ok(fb1.base.pbase == NULL, "wrong put base, expected %p got %p\n", NULL, fb1.base.pbase);
ok(fb1.base.pptr == NULL, "wrong put pointer, expected %p got %p\n", NULL, fb1.base.pptr);
fb1.base.epptr = fb1.base.ebuf;
ret = (int) call_func1(p_filebuf_sync, &fb1);
ok(ret == 0, "wrong return, expected 0 got %d\n", ret);
ok(fb1.base.epptr == NULL, "wrong put end, expected %p got %p\n", NULL, fb1.base.epptr);
fb1.base.pbase = fb1.base.base;
ret = (int) call_func1(p_filebuf_sync, &fb1);
ok(ret == 0, "wrong return, expected 0 got %d\n", ret);
ok(fb1.base.pbase == NULL, "wrong put base, expected %p got %p\n", NULL, fb1.base.pbase);
fb1.base.pbase = fb1.base.base;
fb1.base.epptr = fb1.base.ebuf;
ret = (int) call_func1(p_filebuf_sync, &fb1);
ok(ret == 0, "wrong return, expected 0 got %d\n", ret);
ok(fb1.base.pbase == NULL, "wrong put base, expected %p got %p\n", NULL, fb1.base.pbase);
ok(fb1.base.epptr == NULL, "wrong put end, expected %p got %p\n", NULL, fb1.base.epptr);
fb1.base.eback = fb1.base.base;
ret = (int) call_func1(p_filebuf_sync, &fb1);
ok(ret == 0, "wrong return, expected 0 got %d\n", ret);
ok(fb1.base.eback == NULL, "wrong get base, expected %p got %p\n", NULL, fb1.base.eback);
fb1.base.eback = fb1.base.gptr = fb1.base.base;
ret = (int) call_func1(p_filebuf_sync, &fb1);
ok(ret == 0, "wrong return, expected 0 got %d\n", ret);
ok(fb1.base.gptr == NULL, "wrong get base, expected %p got %p\n", NULL, fb1.base.gptr);
fb1.base.gptr = fb1.base.base;
fb1.base.egptr = fb1.base.base + 100;
fb1.base.pbase = fb1.base.base;
ret = (int) call_func1(p_filebuf_sync, &fb1);
ok(ret == -1, "wrong return, expected -1 got %d\n", ret);
ok(fb1.base.gptr == fb1.base.base, "wrong get base, expected %p got %p\n", fb1.base.base, fb1.base.gptr);
ok(fb1.base.egptr == fb1.base.base + 100, "wrong get base, expected %p got %p\n", fb1.base.base + 100, fb1.base.egptr);
ok(fb1.base.pbase == NULL, "wrong put base, expected %p got %p\n", NULL, fb1.base.pbase);
fb1.base.egptr = NULL;
ret = (int) call_func1(p_filebuf_sync, &fb1);
ok(ret == 0, "wrong return, expected 0 got %d\n", ret);
ok(fb1.base.gptr == NULL, "wrong get base, expected %p got %p\n", NULL, fb1.base.gptr);
ok(fb1.base.egptr == NULL, "wrong get base, expected %p got %p\n", NULL, fb1.base.egptr);
ret = (int) call_func1(p_filebuf_sync, &fb2); ret = (int) call_func1(p_filebuf_sync, &fb2);
ok(ret == -1, "wrong return, expected -1 got %d\n", ret); ok(ret == -1, "wrong return, expected -1 got %d\n", ret);
fb3.base.eback = fb3.base.base; fb3.base.eback = fb3.base.base;