[Bug fortran/95631] Unable to redefine a literal with `-std=legacy'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95631 Maciej W. Rozycki changed: What|Removed |Added Resolution|INVALID |DUPLICATE --- Comment #5 from Maciej W. Rozycki --- Thanks for the clarification, and quoting the relevant pieces of the respective standards in particular. I have marked the relevant duplicates, and hopefully the somewhat more meaningful bug summary will serve in the future. It may be worth adding this test case to the test suite, though for that I gather we'd have to trap that SIGSEGV and convert it to a successful return, whereas running through would have to exit unsuccessfully. Regrettably my Fortran fu is too weak to come up with a signal handler quickly. NB numerous computer systems do not support memory protection and have no way to mark a segment read-only, and may otherwise either not support instrumentation at all or it can be disabled for performance reasons, so the phenomenon observed/reported may indeed have been just a peculiarity of the implementation. I have filed PR target/95637 for the `.sdata' assignment of read-only data with `riscv*-*-linux-gnu' targets. *** This bug has been marked as a duplicate of bug 17887 ***
[Bug fortran/95631] Unable to redefine a literal with `-std=legacy'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95631 kargl at gcc dot gnu.org changed: What|Removed |Added Resolution|--- |INVALID CC||kargl at gcc dot gnu.org Status|UNCONFIRMED |RESOLVED --- Comment #4 from kargl at gcc dot gnu.org --- I think Eric Korpela may not know the Fortran standards. Yes, old compiler did dumb things, because it was/is difficult to detect this violation of the Fortran standards. Note, these prohibitions are on the programmer. F66 8.4.2 If an actual argument corresponds to a dummy argument that is defined or redefined in the referenced subprogram, the actual argument must be a variable name, an array element name, or an array name. F77 15.9.2 Actual arguments may be constants, symbolic names of constants, function references, expressions involving operators, and expressions enclosed in parentheses if and only if the associated dummy argument is a variable that is not defined during execution of the referenced external procedure.
[Bug fortran/95631] Unable to redefine a literal with `-std=legacy'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95631 --- Comment #3 from Andrew Pinski --- Note I think this is a bug in the RISCV backend that selects the small data section for read only constants. Rather than we want to support this extension.
[Bug fortran/95631] Unable to redefine a literal with `-std=legacy'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95631 --- Comment #2 from Andrew Pinski --- PR 17887 was the same issue against g77.
[Bug fortran/95631] Unable to redefine a literal with `-std=legacy'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95631 --- Comment #1 from Andrew Pinski --- Well we decided long time ago not to support that extension. See PR 37974 and maybe even some g77 bug reports.
