1819723 - Crash in [@ alloc::string::String::truncate]

Status: RESOLVED FIXED

(Firefox :: General, defect)

Description

[Dianna Smith [:diannaS]]

Crash report: https://crash-stats.mozilla.org/report/index/a570ac60-3856-4fa6-b6c6-f80b70230301

MOZ_CRASH Reason: assertion failed: self.is_char_boundary(new_len)

Top 10 frames of crashing thread:

0  xul.dll  MOZ_Crash  mfbt/Assertions.h:261
0  xul.dll  RustMozCrash  mozglue/static/rust/wrappers.cpp:17
1  xul.dll  mozglue_static::panic_hook  mozglue/static/rust/lib.rs:91
2  xul.dll  core::ops::function::Fn::call<void   /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/core/src/ops/function.rs:337
3  xul.dll  alloc::boxed::impl$47::call  library/alloc/src/boxed.rs:2032
3  xul.dll  std::panicking::rust_panic_with_hook  library/std/src/panicking.rs:692
4  xul.dll  std::panicking::begin_panic_handler::closure$0  library/std/src/panicking.rs:577
5  xul.dll  std::sys_common::backtrace::__rust_end_short_backtrace<std::panicking::begin_panic_handler::closure_env$0, never$>  library/std/src/sys_common/backtrace.rs:137
6  xul.dll  std::panicking::begin_panic_handler  library/std/src/panicking.rs:575
7  xul.dll  core::panicking::panic_fmt  library/core/src/panicking.rs:64

Comment 1

[Ryan VanderMeulen [:RyanVM]]

Possibly from the Glean 52.3.0 update?

Comment 2

[Ryan VanderMeulen [:RyanVM]]

Oof, we had an A-S bump in there too.
https://bugzilla.mozilla.org/show_bug.cgi?id=1818349

Comment 3

[Ryan VanderMeulen [:RyanVM]]

Regression range:
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=bc3bdd8c19f8&tochange=d59b76766f0dca1e3e1fb4227a5110b1f4f58f11

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1818349

Comment 5

[Ryan VanderMeulen [:RyanVM]]

Bug 1818349 has been backed out and reopened. We can close this out once we confirm via Socorro that the crashes are gone.

Comment 6

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

No crashes with latest Nightly.