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Thread-Topic: [EXTERNAL] Re: Fw: Re: Fw: Re: Why do these mprotect always fail? 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: ncbi.nlm.nih.gov X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM8PR09MB7095.namprd09.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 704d6f4d-86df-4782-2ae5-08db0f78f28d X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Feb 2023 17:20:34.2261 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 14b77578-9773-42d5-8507-251ca2dc2b06 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR09MB5260 X-Spam-Status: No, score=1.8 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,KAM_LOTSOFHASH,SPAM_BODY,SPF_PASS,TXREP,T_SPF_HELO_PERMERROR autolearn=no autolearn_force=no version=3.4.6 X-Spam-Level: * X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: > I still think it's a bug in the code which requires some debugging effort > on your side. I think that OP does not understand that the page size constant is a proper= ty of the platform, and not something that can be redefined at will even th= ough it's a macro. > > #ifndef __CYGWIN__ > > #define PAGE_SIZE 4096 > > #endif If anything, IMO the conditional should look like: #ifndef PAGE_SIZE #define PAGE_SIZE 4096 #endif and only used after all necessary headers that might define PAGE_SIZE on a = particular platform (or all platforms that the code is supposed to be run o= n), have been already included. $.02 Anton Lavrentiev Contractor NIH/NLM/NCBI > -----Original Message----- > From: Cygwin On Behal= f Of Corinna > Vinschen via Cygwin > Sent: Wednesday, February 15, 2023 11:33 AM > To: w6b7rk5yu4mt25v3 > Cc: Corinna Vinschen ; cygwin@cygwin.com > Subject: [EXTERNAL] Re: Fw: Re: Fw: Re: Why do these mprotect always fail= ? >=20 > On Feb 15 15:31, w6b7rk5yu4mt25v3 via Cygwin wrote: > > I asked the developer of the interpreter. He said it's OK to use the PA= GE_SIZE value > different than 4096. So I used this dirty hack: > > > > #ifndef __CYGWIN__ > > #define PAGE_SIZE 4096 > > #endif > > > > This means on Cygwin it will use the default PAGE_SIZE defined on limit= s.h (I'm taking > advantage of the naming conflict here so I don't have to rename PAGE_SIZE= to JIT_PAGE_SIZE > as suggested by the developer of the interpreter). > > > > The result is it's no longer error with "Unable to mprotect" but will > > silently crashed without any error messages printed on the screen. So > > after all, it's Cygwin's quirks here. >=20 > I still think it's a bug in the code which requires some debugging effort > on your side. >=20 > Having said that, if it's actually a Cygwin bug and you want it fixed, > please provide a *simple*, self-contained testcase in plain C, with a > minimum of code to reproduce the issue, and which compiles OOTB. >=20 >=20 > Corinna >=20 > -- > Problem reports: > https://gcc02.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fcygwi= n.com%2Fproblems.ht > ml&data=3D05%7C01%7Clavr%40ncbi.nlm.nih.gov%7C123073164bd640013e1b08db0f7= 270d6%7C14b77578977 > 342d58507251ca2dc2b06%7C0%7C0%7C638120756411216141%7CUnknown%7CTWFpbGZsb3= d8eyJWIjoiMC4wLjA > wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata= =3DxGvkoh2uUrmyDUWi > GeWSvPK9FUOclLRDeAzj0Omb7tM%3D&reserved=3D0 > FAQ: > https://gcc02.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fcygwi= n.com%2Ffaq%2F&data > =3D05%7C01%7Clavr%40ncbi.nlm.nih.gov%7C123073164bd640013e1b08db0f7270d6%7= C14b77578977342d585 > 07251ca2dc2b06%7C0%7C0%7C638120756411216141%7CUnknown%7CTWFpbGZsb3d8eyJWI= joiMC4wLjAwMDAiLC > JQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3DA0S3= Y%2FH3SplYCgZyvLJGS > SNLefPZ9w%2FG%2FC0yMbZbU7g%3D&reserved=3D0 > Documentation: > https://gcc02.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fcygwi= n.com%2Fdocs.html&d > ata=3D05%7C01%7Clavr%40ncbi.nlm.nih.gov%7C123073164bd640013e1b08db0f7270d= 6%7C14b77578977342d > 58507251ca2dc2b06%7C0%7C0%7C638120756411216141%7CUnknown%7CTWFpbGZsb3d8ey= JWIjoiMC4wLjAwMDA > iLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3DE= OWoOQyBbNc0QxaF1%2B > kcmgHHwHsPEEvuXTnzV1gdh34%3D&reserved=3D0 > Unsubscribe info: > https://gcc02.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fcygwi= n.com%2Fml%2F%23uns > ubscribe- > simple&data=3D05%7C01%7Clavr%40ncbi.nlm.nih.gov%7C123073164bd640013e1b08d= b0f7270d6%7C14b7757 > 8977342d58507251ca2dc2b06%7C0%7C0%7C638120756411216141%7CUnknown%7CTWFpbG= Zsb3d8eyJWIjoiMC4 > wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&s= data=3D5lX8vOlyCMW6 > 4rxLXtdKPHs6thdr9sB5VlyRZw8MNKY%3D&reserved=3D0 > CAUTION: This email originated from outside of the organization. Do not c= lick links or > open attachments unless you recognize the sender and are confident the co= ntent is safe.