user/firefox-esr: Add custom triplet vendor patch

This patch fixes target-lexicon as it is upstream.  It should not be
necessary the next time Firefox updates its vendored crates.

Closes: #863

1 files changed, 316 insertions, 0 deletions

diff --git a/user/firefox-esr/triplet-vendor-support.patch b/user/firefox-esr/triplet-vendor-support.patch
new file mode 100644
index 000000000..d0ca17e81
--- /dev/null
+++ b/user/firefox-esr/triplet-vendor-support.patch
@@ -0,0 +1,316 @@
+Squashed version of https://github.com/bytecodealliance/target-lexicon/pull/35
+
+diff -Naur firefox-91.13.0/third_party/rust/target-lexicon-0.9.0_orig/build.rs firefox-91.13.0/third_party/rust/target-lexicon-0.9.0/build.rs
+--- firefox-91.13.0/third_party/rust/target-lexicon-0.9.0_orig/build.rs	2022-08-15 13:05:59.000000000 -0500
++++ firefox-91.13.0/third_party/rust/target-lexicon-0.9.0/build.rs	2022-11-23 00:35:04.697192794 -0600
+@@ -32,6 +32,7 @@
+     }
+ }
+ 
++use self::targets::Vendor;
+ use self::triple::Triple;
+ 
+ fn main() {
+@@ -52,6 +53,8 @@
+     writeln!(out, "use crate::Aarch64Architecture::*;")?;
+     writeln!(out, "#[allow(unused_imports)]")?;
+     writeln!(out, "use crate::ArmArchitecture::*;")?;
++    writeln!(out, "#[allow(unused_imports)]")?;
++    writeln!(out, "use crate::CustomVendor;")?;
+     writeln!(out)?;
+     writeln!(out, "/// The `Triple` of the current host.")?;
+     writeln!(out, "pub const HOST: Triple = Triple {{")?;
+@@ -60,7 +63,7 @@
+         "    architecture: Architecture::{:?},",
+         triple.architecture
+     )?;
+-    writeln!(out, "    vendor: Vendor::{:?},", triple.vendor)?;
++    writeln!(out, "    vendor: {},", vendor_display(&triple.vendor))?;
+     writeln!(
+         out,
+         "    operating_system: OperatingSystem::{:?},",
+@@ -90,7 +93,7 @@
+     writeln!(out, "impl Vendor {{")?;
+     writeln!(out, "    /// Return the vendor for the current host.")?;
+     writeln!(out, "    pub const fn host() -> Self {{")?;
+-    writeln!(out, "        Vendor::{:?}", triple.vendor)?;
++    writeln!(out, "        {}", vendor_display(&triple.vendor))?;
+     writeln!(out, "    }}")?;
+     writeln!(out, "}}")?;
+     writeln!(out)?;
+@@ -138,7 +141,11 @@
+         "            architecture: Architecture::{:?},",
+         triple.architecture
+     )?;
+-    writeln!(out, "            vendor: Vendor::{:?},", triple.vendor)?;
++    writeln!(
++        out,
++        "            vendor: {},",
++        vendor_display(&triple.vendor)
++    )?;
+     writeln!(
+         out,
+         "            operating_system: OperatingSystem::{:?},",
+@@ -160,3 +167,13 @@
+ 
+     Ok(())
+ }
++
++fn vendor_display(vendor: &Vendor) -> String {
++    match vendor {
++        Vendor::Custom(custom) => format!(
++            "Vendor::Custom(CustomVendor::Static({:?}))",
++            custom.as_str()
++        ),
++        known => format!("Vendor::{:?}", known),
++    }
++}
+diff -Naur firefox-91.13.0/third_party/rust/target-lexicon-0.9.0_orig/src/lib.rs firefox-91.13.0/third_party/rust/target-lexicon-0.9.0/src/lib.rs
+--- firefox-91.13.0/third_party/rust/target-lexicon-0.9.0_orig/src/lib.rs	2022-08-15 13:05:37.000000000 -0500
++++ firefox-91.13.0/third_party/rust/target-lexicon-0.9.0/src/lib.rs	2022-11-23 00:35:04.697192794 -0600
+@@ -28,7 +28,7 @@
+ pub use self::host::HOST;
+ pub use self::parse_error::ParseError;
+ pub use self::targets::{
+-    Aarch64Architecture, Architecture, ArmArchitecture, BinaryFormat, Environment, OperatingSystem,
+-    Vendor,
++    Aarch64Architecture, Architecture, ArmArchitecture, BinaryFormat, CustomVendor, Environment,
++    OperatingSystem, Vendor,
+ };
+ pub use self::triple::{CallingConvention, Endianness, PointerWidth, Triple};
+diff -Naur firefox-91.13.0/third_party/rust/target-lexicon-0.9.0_orig/src/targets.rs firefox-91.13.0/third_party/rust/target-lexicon-0.9.0/src/targets.rs
+--- firefox-91.13.0/third_party/rust/target-lexicon-0.9.0_orig/src/targets.rs	2022-08-15 13:05:42.000000000 -0500
++++ firefox-91.13.0/third_party/rust/target-lexicon-0.9.0/src/targets.rs	2022-11-23 00:35:04.697192794 -0600
+@@ -1,7 +1,10 @@
+ // This file defines all the identifier enums and target-aware logic.
+ 
+ use crate::triple::{Endianness, PointerWidth, Triple};
++use alloc::boxed::Box;
++use alloc::string::String;
+ use core::fmt;
++use core::hash::{Hash, Hasher};
+ use core::str::FromStr;
+ 
+ /// The "architecture" field, which in some cases also specifies a specific
+@@ -290,9 +293,42 @@
+     }
+ }
+ 
++/// A string for a `Vendor::Custom` that can either be used in `const`
++/// contexts or hold dynamic strings.
++#[derive(Clone, Debug, Eq)]
++pub enum CustomVendor {
++    /// An owned `String`. This supports the general case.
++    Owned(Box<String>),
++    /// A static `str`, so that `CustomVendor` can be constructed in `const`
++    /// contexts.
++    Static(&'static str),
++}
++
++impl CustomVendor {
++    /// Extracts a string slice.
++    pub fn as_str(&self) -> &str {
++        match self {
++            CustomVendor::Owned(s) => s,
++            CustomVendor::Static(s) => s,
++        }
++    }
++}
++
++impl PartialEq for CustomVendor {
++    fn eq(&self, other: &Self) -> bool {
++        self.as_str() == other.as_str()
++    }
++}
++
++impl Hash for CustomVendor {
++    fn hash<H: Hasher>(&self, state: &mut H) {
++        self.as_str().hash(state)
++    }
++}
++
+ /// The "vendor" field, which in practice is little more than an arbitrary
+ /// modifier.
+-#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
++#[derive(Clone, Debug, PartialEq, Eq, Hash)]
+ #[allow(missing_docs)]
+ pub enum Vendor {
+     Unknown,
+@@ -306,6 +342,15 @@
+     Sun,
+     Uwp,
+     Wrs,
++
++    /// A custom vendor. "Custom" in this context means that the vendor is
++    /// not specifically recognized by upstream Autotools, LLVM, Rust, or other
++    /// relevant authorities on triple naming. It's useful for people building
++    /// and using locally patched toolchains.
++    ///
++    /// Outside of such patched environments, users of `target-lexicon` should
++    /// treat `Custom` the same as `Unknown` and ignore the string.
++    Custom(CustomVendor),
+ }
+ 
+ /// The "operating system" field, which sometimes implies an environment, and
+@@ -717,6 +762,7 @@
+             Vendor::Sun => "sun",
+             Vendor::Uwp => "uwp",
+             Vendor::Wrs => "wrs",
++            Vendor::Custom(ref name) => name.as_str(),
+         };
+         f.write_str(s)
+     }
+@@ -738,7 +784,43 @@
+             "sun" => Vendor::Sun,
+             "uwp" => Vendor::Uwp,
+             "wrs" => Vendor::Wrs,
+-            _ => return Err(()),
++            custom => {
++                use alloc::borrow::ToOwned;
++
++                // A custom vendor. Since triple syntax is so loosely defined,
++                // be as conservative as we can to avoid potential ambiguities.
++                // We err on the side of being too strict here, as we can
++                // always relax it if needed.
++
++                // Don't allow empty string names.
++                if custom.is_empty() {
++                    return Err(());
++                }
++
++                // Don't allow any other recognized name as a custom vendor,
++                // since vendors can be omitted in some contexts.
++                if Architecture::from_str(custom).is_ok()
++                    || OperatingSystem::from_str(custom).is_ok()
++                    || Environment::from_str(custom).is_ok()
++                    || BinaryFormat::from_str(custom).is_ok()
++                {
++                    return Err(());
++                }
++
++                // Require the first character to be an ascii lowercase.
++                if !custom.chars().nth(0).unwrap().is_ascii_lowercase() {
++                    return Err(());
++                }
++
++                // Restrict the set of characters permitted in a custom vendor.
++                if custom.chars().any(|c: char| {
++                    !(c.is_ascii_lowercase() || c.is_ascii_digit() || c == '_' || c == '.')
++                }) {
++                    return Err(());
++                }
++
++                Vendor::Custom(CustomVendor::Owned(Box::new(custom.to_owned())))
++            }
+         })
+     }
+ }
+@@ -1120,4 +1202,87 @@
+         assert_eq!(t.environment, Environment::Eabihf);
+         assert_eq!(t.binary_format, BinaryFormat::Elf);
+     }
++
++    #[test]
++    fn custom_vendors() {
++        // Test various invalid cases.
++        assert!(Triple::from_str("x86_64--linux").is_err());
++        assert!(Triple::from_str("x86_64-42-linux").is_err());
++        assert!(Triple::from_str("x86_64-__customvendor__-linux").is_err());
++        assert!(Triple::from_str("x86_64-^-linux").is_err());
++        assert!(Triple::from_str("x86_64- -linux").is_err());
++        assert!(Triple::from_str("x86_64-CustomVendor-linux").is_err());
++        assert!(Triple::from_str("x86_64-linux-linux").is_err());
++        assert!(Triple::from_str("x86_64-x86_64-linux").is_err());
++        assert!(Triple::from_str("x86_64-elf-linux").is_err());
++        assert!(Triple::from_str("x86_64-gnu-linux").is_err());
++        assert!(Triple::from_str("x86_64-linux-customvendor").is_err());
++        assert!(Triple::from_str("customvendor").is_err());
++        assert!(Triple::from_str("customvendor-x86_64").is_err());
++        assert!(Triple::from_str("x86_64-").is_err());
++        assert!(Triple::from_str("x86_64--").is_err());
++
++        // Test various Unicode things.
++        assert!(
++            Triple::from_str("x86_64-𝓬𝓾𝓼𝓽𝓸𝓶𝓿𝓮𝓷𝓭𝓸𝓻-linux").is_err(),
++            "unicode font hazard"
++        );
++        assert!(
++            Triple::from_str("x86_64-ćúśtőḿvéńdőŕ-linux").is_err(),
++            "diacritical mark stripping hazard"
++        );
++        assert!(
++            Triple::from_str("x86_64-customvendοr-linux").is_err(),
++            "homoglyph hazard"
++        );
++        assert!(Triple::from_str("x86_64-customvendor-linux").is_ok());
++        assert!(
++            Triple::from_str("x86_64-ffi-linux").is_err(),
++            "normalization hazard"
++        );
++        assert!(Triple::from_str("x86_64-ffi-linux").is_ok());
++        assert!(
++            Triple::from_str("x86_64-custom‍vendor-linux").is_err(),
++            "zero-width character hazard"
++        );
++        assert!(
++            Triple::from_str("x86_64-customvendor-linux").is_err(),
++            "BOM hazard"
++        );
++
++        // Test some valid cases.
++        let t = Triple::from_str("x86_64-customvendor-linux")
++            .expect("can't parse target with custom vendor");
++        assert_eq!(t.architecture, Architecture::X86_64);
++        assert_eq!(
++            t.vendor,
++            Vendor::Custom(CustomVendor::Static("customvendor"))
++        );
++        assert_eq!(t.operating_system, OperatingSystem::Linux);
++        assert_eq!(t.environment, Environment::Unknown);
++        assert_eq!(t.binary_format, BinaryFormat::Elf);
++        assert_eq!(t.to_string(), "x86_64-customvendor-linux");
++
++        let t =
++            Triple::from_str("x86_64-customvendor").expect("can't parse target with custom vendor");
++        assert_eq!(t.architecture, Architecture::X86_64);
++        assert_eq!(
++            t.vendor,
++            Vendor::Custom(CustomVendor::Static("customvendor"))
++        );
++        assert_eq!(t.operating_system, OperatingSystem::Unknown);
++        assert_eq!(t.environment, Environment::Unknown);
++        assert_eq!(t.binary_format, BinaryFormat::Unknown);
++
++        assert_eq!(
++            Triple::from_str("unknown-foo"),
++            Ok(Triple {
++                architecture: Architecture::Unknown,
++                vendor: Vendor::Custom(CustomVendor::Static("foo")),
++                operating_system: OperatingSystem::Unknown,
++                environment: Environment::Unknown,
++                binary_format: BinaryFormat::Unknown,
++            })
++        );
++    }
+ }
+diff -Naur firefox-91.13.0/third_party/rust/target-lexicon-0.9.0_orig/src/triple.rs firefox-91.13.0/third_party/rust/target-lexicon-0.9.0/src/triple.rs
+--- firefox-91.13.0/third_party/rust/target-lexicon-0.9.0_orig/src/triple.rs	2022-08-15 13:05:59.000000000 -0500
++++ firefox-91.13.0/third_party/rust/target-lexicon-0.9.0/src/triple.rs	2022-11-23 00:35:04.697192794 -0600
+@@ -323,10 +323,6 @@
+             Err(ParseError::UnrecognizedArchitecture("foo".to_owned()))
+         );
+         assert_eq!(
+-            Triple::from_str("unknown-foo"),
+-            Err(ParseError::UnrecognizedVendor("foo".to_owned()))
+-        );
+-        assert_eq!(
+             Triple::from_str("unknown-unknown-foo"),
+             Err(ParseError::UnrecognizedOperatingSystem("foo".to_owned()))
+         );
+diff -Naur firefox-91.13.0/third_party/rust/target-lexicon-0.9.0_orig/.cargo-checksum.json firefox-91.13.0/third_party/rust/target-lexicon-0.9.0/.cargo-checksum.json
+--- firefox-91.13.0/third_party/rust/target-lexicon-0.9.0_orig/.cargo-checksum.json	2022-08-15 13:05:38.000000000 -0500
++++ firefox-91.13.0/third_party/rust/target-lexicon-0.9.0/.cargo-checksum.json	2022-11-23 01:16:14.304912521 -0600
+@@ -1 +1 @@
+-{"files":{"Cargo.lock":"a1a162e6ce8fc2234a6ddf7090410006a1920ace8738772e32a5b50e4780c19d","Cargo.toml":"f3b545fa0f184fd0d3624e6e5c205fcbdf1ad0934a2e08406549ad53c2a62ac3","LICENSE":"268872b9816f90fd8e85db5a28d33f8150ebb8dd016653fb39ef1f94f2686bc5","README.md":"c3467056d91be3f59562158ee9604c729b5b5f473efbefb036032803eb76809e","build.rs":"723100e9cdc30cd8c48407233c2cffa10f5b10703a0a11bac1230d8b86e49ccf","examples/host.rs":"503bafddfb372123fe4dc0e7b8037808beb5bfe6df60c00d3315922bd3792c6c","examples/misc.rs":"49a579845450b7b020ed5c97dca142fc548725893cbc82f6f750ee0caab2beca","newlist":"89564342916321c5bc35e772d374a7f0af22cc9ae6dcc0027eca48d2269f18cb","src/host.rs":"fb543df4f362e9119a58523563e453110f4e3a426f0995911d0ca386657cf1d9","src/lib.rs":"4414353c30f25d44df6cc14f7f9eea9991222289c6aa662b74406f6923235970","src/parse_error.rs":"b3735eabc0fd0a9dfdd6375662f20ec96a79852a00a05a98fb2e421545285e53","src/targets.rs":"9ccc0849cff06d8906dacbdc15136cc47fab85ccd795033ddfdde1397dfcfe32","src/triple.rs":"949bd83b043b53b18f643ebc3fbebbfe02a13998b787fda432a5d36aa27d20bd","test.sh":"22e3c630a6c84e90d5c70c367a6712be8eeca1e7682c00d1f65bf53e330e9191"},"package":"6f4c118a7a38378f305a9e111fcb2f7f838c0be324bfb31a77ea04f7f6e684b4"}
+\ No newline at end of file
++{"files":{"Cargo.lock":"a1a162e6ce8fc2234a6ddf7090410006a1920ace8738772e32a5b50e4780c19d","Cargo.toml":"f3b545fa0f184fd0d3624e6e5c205fcbdf1ad0934a2e08406549ad53c2a62ac3","LICENSE":"268872b9816f90fd8e85db5a28d33f8150ebb8dd016653fb39ef1f94f2686bc5","README.md":"c3467056d91be3f59562158ee9604c729b5b5f473efbefb036032803eb76809e","build.rs":"85d6a1b6392b56946f48c0ff1526736a37fe012951bf3855709da1d6cfb4baa0","examples/host.rs":"503bafddfb372123fe4dc0e7b8037808beb5bfe6df60c00d3315922bd3792c6c","examples/misc.rs":"49a579845450b7b020ed5c97dca142fc548725893cbc82f6f750ee0caab2beca","newlist":"89564342916321c5bc35e772d374a7f0af22cc9ae6dcc0027eca48d2269f18cb","src/host.rs":"fb543df4f362e9119a58523563e453110f4e3a426f0995911d0ca386657cf1d9","src/lib.rs":"89986c98b9a04e0f1e957e0127e23a53048a1f0d597493723c4bba031c2ca32d","src/parse_error.rs":"b3735eabc0fd0a9dfdd6375662f20ec96a79852a00a05a98fb2e421545285e53","src/targets.rs":"f2048f06e3e2151a8181d8c92651fa45e64b8bfdfd18ead4b6c18ee7c9fb9003","src/triple.rs":"4704266fec8763bc70d230aad3608bdb790b51e41149056daa2ce0d5fdaef5a3","test.sh":"22e3c630a6c84e90d5c70c367a6712be8eeca1e7682c00d1f65bf53e330e9191"},"package":"6f4c118a7a38378f305a9e111fcb2f7f838c0be324bfb31a77ea04f7f6e684b4"}