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Thread-Topic: dumper does not produce core that gdb recognizes? 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM8PR09MB7095.namprd09.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: f666015b-84d0-4a9f-c61c-08da612e1d9a X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Jul 2022 22:06:31.9263 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 14b77578-9773-42d5-8507-251ca2dc2b06 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR09MB5323 X-OriginatorOrg: ncbi.nlm.nih.gov X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_EF, KAM_SHORT, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE, T_SPF_HELO_PERMERROR autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 Jul 2022 22:06:35 -0000 Hi all, I need to do some deep debugging on Cygwin so I need to produce a core... = And it does not work. So I reduced the problem to this minimal test case: $ cat a.c #include int main() { abort(); } $ gcc -Wall -g a.c $ echo $CYGWIN error_start=3Dc:\cygwin64\bin\dumper.exe $ ulimit -a core file size (blocks, -c) unlimited data seg size (kbytes, -d) unlimited file size (blocks, -f) unlimited open files (-n) 3200 pipe size (512 bytes, -p) 8 stack size (kbytes, -s) 2036 cpu time (seconds, -t) unlimited max user processes (-u) 256 virtual memory (kbytes, -v) unlimited $ ./a *** starting debugger for pid 19934, tid 9332 $ ls -l a.* -rw-r--r-- 1 ANTON None 49 Jul 8 17:40 a.c -rwxr-xr-x 1 ANTON None 161487 Jul 8 17:41 a.exe* -rw-r--r-- 1 ANTON None 3331640 Jul 8 17:46 a.exe.core $ file a.* a.c: C source, ASCII text a.exe: PE32+ executable (console) x86-64, for MS Windows a.exe.core: ELF 64-bit LSB core file, x86-64, version 1 (SYSV) BUT: gdb does not want this core file: $ gdb ./a.exe a.exe.core GNU gdb (GDB) (Cygwin 9.2-1) 9.2 Copyright (C) 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-cygwin". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from ./a.exe... "/home/ANTON/a.exe.core": no core file handler recognizes format (gdb) What I am doing wrong? TIA, Anton Lavrentiev Contractor NIH/NLM/NCBI