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[Tinycc-devel] Out of Bounds Write in end_macro

From: Bugs SysSec
Subject: [Tinycc-devel] Out of Bounds Write in end_macro
Date: Wed, 13 Mar 2019 18:24:36 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.3

Dear all,

While fuzzing tcc, an out of bounds write was found in the end_macro

Attached are a file producing a crash when compiled and the output of

To reproduce, compile the attached input file with tcc

    tcc end_macro.c

The latest git version of tcc (commit
4b46e0ec630531fa85d742706272525bebea49d2) was tested.

Credits: SysSec chair of Ruhr University Bochum

Attachment: end_macro.c
Description: Text Data

Attachment: end_macro.valgrind.txt
Description: Text document

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