Hello, yes I will send you a minimal program to call XGetWindowProperty.
Cheers, Tobias ---- On Tue, 27 Aug 2019 11:35:01 +0200 Pierre Muller <pie...@freepascal.org> wrote: > Hi, > > the testsuite results show no difference, > this probably means that we have no test that checks > GCC compatibility for more than 8 parameters... > > Tobias, could you send us a small source that allows to check this? > > Thanks in advance, > > Pierre > > > Le 26/08/2019 à 00:59, tobiasgie...@gmail.com a écrit : > > Hello, > > > > while examining a crash when running Lazarus on ppc64le, I found the > > following issue in function calls. > > > > Calls to functions with more than eight parameters seem to be > > implemented differently from how gcc does it in a C program. > > > > gcc uses the memory location 96(r1) for the ninth parameter, but FPC > > uses 112(r1). > > > > Therefore, calls to XGetWindowProperty crash. This function has 12 > > parameters. gcc puts the four last ones into 96(r1), 104(r1), 112(r1), > > 120(r1), > > and FPC into 112(r1), 120(r1), 128(r1), 136(r1). > > > > What can be done about this? > > > > I also noticed that the "file" command in Linux mentioned an additional > > property of the linked C program I wrote for testing: > > "for GNU/Linux 3.10.0" > > > > The FPC program did not have this tag. > > > > The complete "file" outputs are: > > > > a.out: ELF 64-bit LSB shared object, 64-bit PowerPC or cisco 7500, version > > 1 (SYSV), dynamically linked, interpreter /lib64/ld64.so.2, > > BuildID[sha1]=6c5d2b5c7408e74eeda95fbf8d120fe8de0f2f30, for GNU/Linux > > 3.10.0, with debug_info, not stripped > > > > minimalxcrash: ELF 64-bit LSB executable, 64-bit PowerPC or cisco 7500, > > version 1 (SYSV), dynamically linked, interpreter /lib64/ld64.so.2, with > > debug_info, not stripped > > > > Hoping my find will be useful, > > Best wishes, > > Tobias Giesen > > > > _______________________________________________ > > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > > https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal > > > _______________________________________________ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal Kind Regards, Tobias Giesen Super Flexible Software GmbH & Co. KG Buddenstr. 29-31 48143 Münster, Germany www.superflexible.com www.tgtools.com ----------------------------------------------------------- Registered at register court Münster as HRA 9716 Liability / general partner: TGTools GmbH Registered at register court Münster as HRB 17763 Directors: Tobias Giesen and Claudia Giesen _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
