| Summary: | Problems detecting -fzero-call-used-regs=all on some architectures | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Portable OpenSSH | Reporter: | Colin Watson <cjwatson> | ||||
| Component: | Build system | Assignee: | Assigned to nobody <unassigned-bugs> | ||||
| Status: | CLOSED FIXED | ||||||
| Severity: | normal | CC: | djm | ||||
| Priority: | P5 | ||||||
| Version: | -current | ||||||
| Hardware: | Other | ||||||
| OS: | Linux | ||||||
| Bug Depends on: | |||||||
| Bug Blocks: | 3395 | ||||||
| Attachments: |
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Created attachment 3573 [details]
Improve detection of -fzero-call-used-regs=all support
This has been merged to git HEAD and cherry-picked onto the V_8_9 stable branch. Thanks! closing bug resolved during openssh-9.0 release cycle |
The autoconf test for whether -fzero-call-used-regs=all is supported isn't sufficient on some architectures. I saw two types of errors on various Debian architectures. An example of one is ppc64el: ../../ssherr.c: In function ‘ssh_err’: ../../ssherr.c:151:1: sorry, unimplemented: ‘-fzero-call-used-regs’ not supported on this target 151 | } | ^ And an example of the other is mips64el, which is noisier but it amounts to much the same thing: ../../ssherr.c: In function ‘ssh_err’: ../../ssherr.c:151:1: internal compiler error: in int_mode_for_mode, at stor-layout.c:407 151 | } | ^ 0x120fecf7f internal_error(char const*, ...) ???:0 0x120139257 fancy_abort(char const*, int, char const*) ???:0 0x1207e62d3 int_mode_for_mode(machine_mode) ???:0 0x120417727 emit_move_insn_1(rtx_def*, rtx_def*) ???:0 0x120413277 emit_move_insn(rtx_def*, rtx_def*) ???:0 0x120802cb3 default_zero_call_used_regs(HARD_REG_SET) ???:0 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <file:///usr/share/doc/gcc-11/README.Bugs> for instructions. during RTL pass: zero_call_used_regs I'm testing a patch for this at the moment.