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From: "infinity0 at pwned dot gg" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/29272] New: regression: previously OK rust tests crash
 with SIGILL/SEGV/ABRT on Debian armhf
Date: Tue, 21 Jun 2022 09:42:13 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29272

            Bug ID: 29272
           Summary: regression: previously OK rust tests crash with
                    SIGILL/SEGV/ABRT on Debian armhf
           Product: gdb
           Version: 11.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: rust
          Assignee: unassigned at sourceware dot org
          Reporter: infinity0 at pwned dot gg
  Target Milestone: ---

Created attachment 14158
  --> https://sourceware.org/bugzilla/attachment.cgi?id=3D14158&action=3Ded=
it
rustc debuginfo test sample #1

1. Compile the attached test file `rustc -g associated-types.rs`.
2. Run `gdb -x dbg.script ./associated-types`, dbg.script as follows:

~~~~
set charset UTF-8
show version
add-auto-load-safe-path /home/infinity0/rustc/./src/etc
set print pretty off
directory /home/infinity0/rustc/./src/etc
file
/home/infinity0/rustc/build/armv7-unknown-linux-gnueabihf/test/debuginfo/as=
sociated-types.gdb/a
set language rust
break 'associated-types.rs':111
break 'associated-types.rs':118
break 'associated-types.rs':122
break 'associated-types.rs':130
break 'associated-types.rs':137
break 'associated-types.rs':140
run
print arg
continue
print inferred
print explicitly
continue
print arg
continue
print arg
continue
print a
print b
continue
print a
print b
continue
quit
~~~~

This works for all rustc versions (I was able to test 1.13 - 1.59) on gdb 10
but fails with SIGILL on gdb 11.2 armhf Debian.

Other rustc debuginfo tests fail with other signals, SIGSEGV, SIGABRT, etc.
More specific details here: https://github.com/rust-lang/rust/issues/96983

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