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msvcirt: Don't return negative values in in_avail and out_waiting. 

Signed-off-by: Iván Matellanes <matellanesivan@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 2016-10-19 14:00:51 +02:00 committed by Alexandre Julliard
parent 6fdf492022
commit 611b727386
2 changed files with 38 additions and 2 deletions
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4
dlls/msvcirt/msvcirt.c
View File

@ -556,7 +556,7 @@ DEFINE_THISCALL_WRAPPER(streambuf_in_avail, 4)
int __thiscall streambuf_in_avail(const streambuf *this)
{
TRACE("(%p)\n", this);
return this->egptr - this->gptr;
return (this->egptr - this->gptr > 0) ? this->egptr - this->gptr : 0;
}
/* ?out_waiting@streambuf@@QBEHXZ */
@ -565,7 +565,7 @@ DEFINE_THISCALL_WRAPPER(streambuf_out_waiting, 4)
int __thiscall streambuf_out_waiting(const streambuf *this)
{
TRACE("(%p)\n", this);
return this->pptr - this->pbase;
return (this->pptr - this->pbase > 0) ? this->pptr - this->pbase : 0;
}
/* Unexported */

36
dlls/msvcirt/tests/msvcirt.c
View File

@ -200,7 +200,9 @@ static int (*__thiscall p_streambuf_allocate)(streambuf*);
static void (*__thiscall p_streambuf_clrclock)(streambuf*);
static int (*__thiscall p_streambuf_doallocate)(streambuf*);
static void (*__thiscall p_streambuf_gbump)(streambuf*, int);
static int (*__thiscall p_streambuf_in_avail)(const streambuf*);
static void (*__thiscall p_streambuf_lock)(streambuf*);
static int (*__thiscall p_streambuf_out_waiting)(const streambuf*);
static int (*__thiscall p_streambuf_pbackfail)(streambuf*, int);
static void (*__thiscall p_streambuf_pbump)(streambuf*, int);
static int (*__thiscall p_streambuf_sbumpc)(streambuf*);
@ -480,7 +482,9 @@ static BOOL init(void)
SET(p_streambuf_clrclock, "?clrlock@streambuf@@QEAAXXZ");
SET(p_streambuf_doallocate, "?doallocate@streambuf@@MEAAHXZ");
SET(p_streambuf_gbump, "?gbump@streambuf@@IEAAXH@Z");
SET(p_streambuf_in_avail, "?in_avail@streambuf@@QEBAHXZ");
SET(p_streambuf_lock, "?lock@streambuf@@QEAAXXZ");
SET(p_streambuf_out_waiting, "?out_waiting@streambuf@@QEBAHXZ");
SET(p_streambuf_pbackfail, "?pbackfail@streambuf@@UEAAHH@Z");
SET(p_streambuf_pbump, "?pbump@streambuf@@IEAAXH@Z");
SET(p_streambuf_sbumpc, "?sbumpc@streambuf@@QEAAHXZ");
@ -657,7 +661,9 @@ static BOOL init(void)
SET(p_streambuf_clrclock, "?clrlock@streambuf@@QAEXXZ");
SET(p_streambuf_doallocate, "?doallocate@streambuf@@MAEHXZ");
SET(p_streambuf_gbump, "?gbump@streambuf@@IAEXH@Z");
SET(p_streambuf_in_avail, "?in_avail@streambuf@@QBEHXZ");
SET(p_streambuf_lock, "?lock@streambuf@@QAEXXZ");
SET(p_streambuf_out_waiting, "?out_waiting@streambuf@@QBEHXZ");
SET(p_streambuf_pbackfail, "?pbackfail@streambuf@@UAEHH@Z");
SET(p_streambuf_pbump, "?pbump@streambuf@@IAEXH@Z");
SET(p_streambuf_sbumpc, "?sbumpc@streambuf@@QAEHXZ");
@ -1388,6 +1394,36 @@ static void test_streambuf(void)
ok(sb2.gptr == sb2.egptr, "wrong get pointer, expected %p got %p\n", sb2.egptr, sb2.gptr);
ok(*sb2.gptr == 'X', "expected 'X' in the get area, got %c\n", *sb2.gptr);
/* out_waiting */
ret = (int) call_func1(p_streambuf_out_waiting, &sb);
ok(ret == 9, "expected 9 got %d\n", ret);
sb.pptr = sb.pbase;
ret = (int) call_func1(p_streambuf_out_waiting, &sb);
ok(ret == 0, "expected 0 got %d\n", ret);
sb.pptr = sb.pbase - 1;
ret = (int) call_func1(p_streambuf_out_waiting, &sb);
ok(ret == 0, "expected 0 got %d\n", ret);
sb.pptr = NULL;
ret = (int) call_func1(p_streambuf_out_waiting, &sb);
ok(ret == 0, "expected 0 got %d\n", ret);
sb.pptr = sb.epptr;
sb.pbase = NULL;
ret = (int) call_func1(p_streambuf_out_waiting, &sb);
ok(ret == (int)(sb.pptr - sb.pbase), "expected %d got %d\n", (int)(sb.pptr - sb.pbase), ret);
/* in_avail */
ret = (int) call_func1(p_streambuf_in_avail, &sb);
ok(ret == 256, "expected 256 got %d\n", ret);
sb.gptr = sb.egptr;
ret = (int) call_func1(p_streambuf_in_avail, &sb);
ok(ret == 0, "expected 0 got %d\n", ret);
sb.gptr = sb.egptr + 1;
ret = (int) call_func1(p_streambuf_in_avail, &sb);
ok(ret == 0, "expected 0 got %d\n", ret);
sb.egptr = NULL;
ret = (int) call_func1(p_streambuf_in_avail, &sb);
ok(ret == 0, "expected 0 got %d\n", ret);
SetEvent(lock_arg.test[3]);
WaitForSingleObject(thread, INFINITE);