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
