New subject: [Bug 56560] There is a memory leak defect at line 1068 in the file /wine/dlls/winex11.drv/clipboard.c.

15 Apr 2024


      https://bugs.winehq.org/show_bug.cgi?id=56560
Bug ID: 56560
           Summary: There is a memory leak defect at line 1068 in the file
                    /wine/dlls/winex11.drv/clipboard.c.
           Product: Wine
           Version: 9.6
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: kernel32
          Assignee: wine-bugs@winehq.org
          Reporter: lumingying@bupt.edu.cn
      Distribution: ---
Trigger Path for the Defect:
1.A pointer variable named "path" is defined at line 1056 in the file
/wine/dlls/winex11.drv/clipboard.c. This pointer allocates a dynamic memory
area through the function "get_dos_file_name" at line 1060, as shown in the
following diagram:
https://github.com/LuMingYinDetect/wine_defects/blob/main/wine_1.png
2.The function "get_dos_file_name" allocates a dynamic memory area and returns
it. Specifically, at line 587, a pointer variable named "ret" is defined. At
line 589, memory space is allocated for the "ret" variable using the function
"malloc," and at line 602, this variable is returned, as shown in the following
diagram:
https://github.com/LuMingYinDetect/wine_defects/blob/main/wine_2.png
3.After the execution of the "get_dos_file_name" function, when the conditional
statement at line 1064 returns false, it indicates that the dynamic memory area
pointed to by the "path" variable is successfully allocated. However, when the
conditional statement at line 1068 returns true, the program exits without
releasing the memory. In this process, the dynamic memory area pointed to by
the "path" pointer is not freed, resulting in a memory leak defect, as shown in
the following diagram:
https://github.com/LuMingYinDetect/wine_defects/blob/main/wine_3.png
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[Bug 56560] New: There is a memory leak defect at line 1068 in the file /wine/dlls/winex11.drv/clipboard.c.