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Rollup merge of rust-lang#77950 - arlosi:sha256, r=eddyb
Add support for SHA256 source file hashing Adds support for `-Z src-hash-algorithm sha256`, which became available in LLVM 11. Using an older version of LLVM will cause an error `invalid checksum kind` if the hash algorithm is set to sha256. r? `@eddyb` cc rust-lang#70401 `@est31`
2 parents 0cd1516 + 3296d5c commit 52405f7

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10 files changed

+59
-10
lines changed

10 files changed

+59
-10
lines changed

‎Cargo.lock‎

Lines changed: 30 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -1928,6 +1928,17 @@ dependencies = [
19281928
"opaque-debug 0.2.3",
19291929
]
19301930

1931+
[[package]]
1932+
name = "md-5"
1933+
version = "0.9.1"
1934+
source = "registry+https://github.com/rust-lang/crates.io-index"
1935+
checksum = "7b5a279bb9607f9f53c22d496eade00d138d1bdcccd07d74650387cf94942a15"
1936+
dependencies = [
1937+
"block-buffer 0.9.0",
1938+
"digest 0.9.0",
1939+
"opaque-debug 0.3.0",
1940+
]
1941+
19311942
[[package]]
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name = "mdbook"
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version = "0.4.3"
@@ -2467,7 +2478,7 @@ checksum = "54be6e404f5317079812fc8f9f5279de376d8856929e21c184ecf6bbd692a11d"
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dependencies = [
24682479
"maplit",
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"pest",
2470-
"sha-1",
2481+
"sha-1 0.8.2",
24712482
]
24722483

24732484
[[package]]
@@ -3281,14 +3292,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
32813292
checksum = "1c267f15c3cfc82a8a441d2bf86bcccf299d1eb625822468e3d8ee6f7c5a1c89"
32823293
dependencies = [
32833294
"cfg-if 0.1.10",
3284-
"md-5",
3295+
"md-5 0.8.0",
32853296
"rustc-ap-rustc_arena",
32863297
"rustc-ap-rustc_data_structures",
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"rustc-ap-rustc_index",
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"rustc-ap-rustc_macros",
32893300
"rustc-ap-rustc_serialize",
32903301
"scoped-tls",
3291-
"sha-1",
3302+
"sha-1 0.8.2",
32923303
"tracing",
32933304
"unicode-width",
32943305
]
@@ -4138,14 +4149,15 @@ name = "rustc_span"
41384149
version = "0.0.0"
41394150
dependencies = [
41404151
"cfg-if 0.1.10",
4141-
"md-5",
4152+
"md-5 0.9.1",
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"rustc_arena",
41434154
"rustc_data_structures",
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"rustc_index",
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"rustc_macros",
41464157
"rustc_serialize",
41474158
"scoped-tls",
4148-
"sha-1",
4159+
"sha-1 0.9.1",
4160+
"sha2",
41494161
"tracing",
41504162
"unicode-width",
41514163
]
@@ -4510,6 +4522,19 @@ dependencies = [
45104522
"opaque-debug 0.2.3",
45114523
]
45124524

4525+
[[package]]
4526+
name = "sha-1"
4527+
version = "0.9.1"
4528+
source = "registry+https://github.com/rust-lang/crates.io-index"
4529+
checksum = "170a36ea86c864a3f16dd2687712dd6646f7019f301e57537c7f4dc9f5916770"
4530+
dependencies = [
4531+
"block-buffer 0.9.0",
4532+
"cfg-if 0.1.10",
4533+
"cpuid-bool",
4534+
"digest 0.9.0",
4535+
"opaque-debug 0.3.0",
4536+
]
4537+
45134538
[[package]]
45144539
name = "sha2"
45154540
version = "0.9.1"

‎compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -801,6 +801,7 @@ fn file_metadata_raw(
801801
let kind = match hash.kind {
802802
rustc_span::SourceFileHashAlgorithm::Md5 => llvm::ChecksumKind::MD5,
803803
rustc_span::SourceFileHashAlgorithm::Sha1 => llvm::ChecksumKind::SHA1,
804+
rustc_span::SourceFileHashAlgorithm::Sha256 => llvm::ChecksumKind::SHA256,
804805
};
805806
(kind, hex_encode(hash.hash_bytes()))
806807
}

‎compiler/rustc_codegen_llvm/src/llvm/ffi.rs‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -558,6 +558,7 @@ pub enum ChecksumKind {
558558
None,
559559
MD5,
560560
SHA1,
561+
SHA256,
561562
}
562563

563564
extern "C" {

‎compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp‎

Lines changed: 5 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -648,6 +648,7 @@ enum class LLVMRustChecksumKind {
648648
None,
649649
MD5,
650650
SHA1,
651+
SHA256,
651652
};
652653

653654
static Optional<DIFile::ChecksumKind> fromRust(LLVMRustChecksumKind Kind) {
@@ -658,6 +659,10 @@ static Optional<DIFile::ChecksumKind> fromRust(LLVMRustChecksumKind Kind) {
658659
return DIFile::ChecksumKind::CSK_MD5;
659660
case LLVMRustChecksumKind::SHA1:
660661
return DIFile::ChecksumKind::CSK_SHA1;
662+
#if (LLVM_VERSION_MAJOR >= 11)
663+
case LLVMRustChecksumKind::SHA256:
664+
return DIFile::ChecksumKind::CSK_SHA256;
665+
#endif
661666
default:
662667
report_fatal_error("bad ChecksumKind.");
663668
}

‎compiler/rustc_session/src/options.rs‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1076,7 +1076,7 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
10761076
span_free_formats: bool = (false, parse_bool, [UNTRACKED],
10771077
"exclude spans when debug-printing compiler state (default: no)"),
10781078
src_hash_algorithm: Option<SourceFileHashAlgorithm> = (None, parse_src_file_hash, [TRACKED],
1079-
"hash algorithm of source files in debug info (`md5`, or `sha1`)"),
1079+
"hash algorithm of source files in debug info (`md5`, `sha1`, or `sha256`)"),
10801080
strip: Strip = (Strip::None, parse_strip, [UNTRACKED],
10811081
"tell the linker which information to strip (`none` (default), `debuginfo` or `symbols`)"),
10821082
symbol_mangling_version: SymbolManglingVersion = (SymbolManglingVersion::Legacy,

‎compiler/rustc_span/Cargo.toml‎

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -17,5 +17,6 @@ scoped-tls = "1.0"
1717
unicode-width = "0.1.4"
1818
cfg-if = "0.1.2"
1919
tracing = "0.1"
20-
sha-1 = "0.8"
21-
md-5 = "0.8"
20+
sha-1 = "0.9"
21+
sha2 = "0.9"
22+
md-5 = "0.9"

‎compiler/rustc_span/src/lib.rs‎

Lines changed: 8 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -59,6 +59,7 @@ use std::str::FromStr;
5959
use md5::Md5;
6060
use sha1::Digest;
6161
use sha1::Sha1;
62+
use sha2::Sha256;
6263

6364
use tracing::debug;
6465

@@ -1034,6 +1035,7 @@ pub struct OffsetOverflowError;
10341035
pub enum SourceFileHashAlgorithm {
10351036
Md5,
10361037
Sha1,
1038+
Sha256,
10371039
}
10381040

10391041
impl FromStr for SourceFileHashAlgorithm {
@@ -1043,6 +1045,7 @@ impl FromStr for SourceFileHashAlgorithm {
10431045
match s {
10441046
"md5" => Ok(SourceFileHashAlgorithm::Md5),
10451047
"sha1" => Ok(SourceFileHashAlgorithm::Sha1),
1048+
"sha256" => Ok(SourceFileHashAlgorithm::Sha256),
10461049
_ => Err(()),
10471050
}
10481051
}
@@ -1055,7 +1058,7 @@ rustc_data_structures::impl_stable_hash_via_hash!(SourceFileHashAlgorithm);
10551058
#[derive(HashStable_Generic, Encodable, Decodable)]
10561059
pub struct SourceFileHash {
10571060
pub kind: SourceFileHashAlgorithm,
1058-
value: [u8; 20],
1061+
value: [u8; 32],
10591062
}
10601063

10611064
impl SourceFileHash {
@@ -1071,6 +1074,9 @@ impl SourceFileHash {
10711074
SourceFileHashAlgorithm::Sha1 => {
10721075
value.copy_from_slice(&Sha1::digest(data));
10731076
}
1077+
SourceFileHashAlgorithm::Sha256 => {
1078+
value.copy_from_slice(&Sha256::digest(data));
1079+
}
10741080
}
10751081
hash
10761082
}
@@ -1090,6 +1096,7 @@ impl SourceFileHash {
10901096
match self.kind {
10911097
SourceFileHashAlgorithm::Md5 => 16,
10921098
SourceFileHashAlgorithm::Sha1 => 20,
1099+
SourceFileHashAlgorithm::Sha256 => 32,
10931100
}
10941101
}
10951102
}

‎src/doc/unstable-book/src/compiler-flags/src-hash-algorithm.md‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -6,6 +6,6 @@ The tracking issue for this feature is: [#70401](https://github.com/rust-lang/ru
66

77
The `-Z src-hash-algorithm` compiler flag controls which algorithm is used when hashing each source file. The hash is stored in the debug info and can be used by a debugger to verify the source code matches the executable.
88

9-
Supported hash algorithms are: `md5`, and `sha1`. Note that not all hash algorithms are supported by all debug info formats.
9+
Supported hash algorithms are: `md5`, `sha1`, and `sha256`. Note that not all hash algorithms are supported by all debug info formats.
1010

1111
By default, the compiler chooses the hash algorithm based on the target specification.

‎src/test/codegen/src-hash-algorithm/src-hash-algorithm-sha256.rs‎

Lines changed: 7 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,7 @@
1+
// compile-flags: -g -Z src-hash-algorithm=sha256
2+
// min-llvm-version: 11.0
3+
4+
#![crate_type = "lib"]
5+
6+
pub fn test() {}
7+
// CHECK: checksumkind: CSK_SHA256

‎src/tools/tidy/src/deps.rs‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -80,6 +80,7 @@ const PERMITTED_DEPENDENCIES: &[&str] = &[
8080
"cloudabi",
8181
"cmake",
8282
"compiler_builtins",
83+
"cpuid-bool",
8384
"crc32fast",
8485
"crossbeam-deque",
8586
"crossbeam-epoch",
@@ -160,6 +161,7 @@ const PERMITTED_DEPENDENCIES: &[&str] = &[
160161
"serde",
161162
"serde_derive",
162163
"sha-1",
164+
"sha2",
163165
"smallvec",
164166
"snap",
165167
"stable_deref_trait",

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