Henry Vermaak via fpc-pascal said on Fri, 2 Jun 2023 09:38:17 +0100 >On Fri, 2 Jun 2023 at 01:36, Steve Litt via fpc-pascal ><fpc-pascal@lists.freepascal.org> wrote: >> fillchar(junkvar, junkvar_size, 'b'); >> person := modperson(person, 'Martin'); >> person := modperson(person2, 'Maria'); > >Maybe a typo? (E.g. person2 := modperson(person2, 'Maria')) > >Henry
Thanks Henry! You're right: Changing the second person := to person2 := did just what I wanted it to do. Because returning a local array or string as a function return in C leads to horrible intermittents due to the local going out of scope and relinquishing the local's stack, which can then be overwritten, I added a procedure, a function, and a main program statement which each consumed two million bytes of local variables, and the person and person2 didn't get overwritten. Very cool. When I increased the huge local vars to three million bytes, the program segfaulted. I figure I just ran it out of stack, but until I did, the huge local vars didn't trash the contents of person and person2. Thanks for your help. SteveT Steve Litt Autumn 2022 featured book: Thriving in Tough Times http://www.troubleshooters.com/bookstore/thrive.htm _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
