msvcirt: Reset the pointers on file sync in most cases
Iván Matellanes
matellanesivan at gmail.com
Mon Jul 11 05:34:56 CDT 2016
Signed-off-by: Iván Matellanes <matellanes.ivan at gmail.com>
---
dlls/msvcirt/msvcirt.c | 4 ++--
dlls/msvcirt/tests/msvcirt.c | 40 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 42 insertions(+), 2 deletions(-)
diff --git a/dlls/msvcirt/msvcirt.c b/dlls/msvcirt/msvcirt.c
index 3adaf74..07aea3e 100644
--- a/dlls/msvcirt/msvcirt.c
+++ b/dlls/msvcirt/msvcirt.c
@@ -1126,8 +1126,8 @@ int __thiscall filebuf_sync(filebuf *this)
count = this->base.pptr - this->base.pbase;
if (count > 0 && _write(this->fd, this->base.pbase, count) != count)
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 */
if (this->base.egptr != NULL) {
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)
return EOF;
}
- this->base.eback = this->base.gptr = this->base.egptr = NULL;
}
+ this->base.eback = this->base.gptr = this->base.egptr = NULL;
return 0;
}
diff --git a/dlls/msvcirt/tests/msvcirt.c b/dlls/msvcirt/tests/msvcirt.c
index 3e8b548..13b8397 100644
--- a/dlls/msvcirt/tests/msvcirt.c
+++ b/dlls/msvcirt/tests/msvcirt.c
@@ -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.pptr == NULL, "wrong put pointer, expected %p got %p\n", NULL, fb1.base.pptr);
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);
ok(ret == -1, "wrong return, expected -1 got %d\n", ret);
fb3.base.eback = fb3.base.base;
--
2.7.4
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