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A possible resource leak in Python 3.11.0 #98872

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SQLPATCH opened this issue Oct 30, 2022 · 2 comments
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A possible resource leak in Python 3.11.0 #98872

SQLPATCH opened this issue Oct 30, 2022 · 2 comments
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type-bug An unexpected behavior, bug, or error

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@SQLPATCH
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SQLPATCH commented Oct 30, 2022

Bug report

Hi, I'm currently using Infer, a static analysis tool, to analyze the native code of CPython.
I found a possible resource leak vulnerability:
Resource of type _IO_FILE acquired by call to fopen() at line 184 is not released after line 196.

Programs/_freeze_module.c:196:

  195.     if (ferror(outfile)) {
  196.         fprintf(stderr, "error when writing to '%s'\n", outpath);
                       ^
  197.         return -1;
  198.     }

I think that resource should be released before exiting, a PR maybe like:

    if (ferror(outfile)) {
        fprintf(stderr, "error when writing to '%s'\n", outpath);
        fclose(outfile);
        return -1;
     }

Python is my favorite programming language. I hope this discovery can be helpful to you!

My environment

  • CPython versions tested on: 3.11.0
  • Operating system and architecture: Ubuntu 22.04
@SQLPATCH SQLPATCH added the type-bug An unexpected behavior, bug, or error label Oct 30, 2022
@corona10
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corona10 commented Nov 2, 2022

@SQLPATCH
Would you like to submit the patch?

SQLPATCH added a commit to SQLPATCH/cpython that referenced this issue Nov 3, 2022
miss-islington pushed a commit that referenced this issue Nov 24, 2022
Issue: #98872

Automerge-Triggered-By: GH:kumaraditya303
miss-islington pushed a commit to miss-islington/cpython that referenced this issue Nov 24, 2022
…GH-99047)

Issue: pythonGH-98872
(cherry picked from commit 4e5f2db)

Co-authored-by: SQLPATCH <95843853+SQLPATCH@users.noreply.github.com>
Automerge-Triggered-By: GH:kumaraditya303
miss-islington added a commit that referenced this issue Nov 24, 2022
Issue: GH-98872
(cherry picked from commit 4e5f2db)

Co-authored-by: SQLPATCH <95843853+SQLPATCH@users.noreply.github.com>
Automerge-Triggered-By: GH:kumaraditya303
@kumaraditya303
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kumaraditya303 commented Nov 24, 2022

Thanks for the bug report and PR.

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