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tif_win32.c: do not _tiffMapProc() 0 sized files

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see #22
This commit is contained in:
Thomas Bernard 2020-03-14 00:10:29 +01:00
parent 0c04331f97
commit e99c4b816a
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GPG Key ID: 0FF11B67A5C0863C
1 changed files with 5 additions and 3 deletions
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libtiff/tif_win32.c
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@ -156,8 +156,10 @@ static uint64
_tiffSizeProc(thandle_t fd) _tiffSizeProc(thandle_t fd)
{ {
ULARGE_INTEGER m; ULARGE_INTEGER m;
m.LowPart=GetFileSize(fd,&m.HighPart); if (GetFileSizeEx(fd,&m))
return(m.QuadPart); return(m.QuadPart);
else
return(0);
} }
static int static int
@ -189,7 +191,7 @@ _tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)
size = _tiffSizeProc(fd); size = _tiffSizeProc(fd);
sizem = (tmsize_t)size; sizem = (tmsize_t)size;
if ((uint64)sizem!=size) if (!size || (uint64)sizem!=size)
return (0); return (0);
/* By passing in 0 for the maximum file size, it specifies that we /* By passing in 0 for the maximum file size, it specifies that we