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ICE: Unsigned value 0x100 does not fit in 8 bits
#123690
Labels
A-layout
Area: Memory layout of types
A-MIR
Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html
C-bug
Category: This is a bug.
E-needs-mcve
Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
S-bug-has-test
Status: This bug is tracked inside the repo by a `known-bug` test.
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
Comments
matthiaskrgr
added
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
C-bug
Category: This is a bug.
labels
Apr 9, 2024
rustbot
added
the
needs-triage
This issue may need triage. Remove it if it has been sufficiently triaged.
label
Apr 9, 2024
with debug assertions:
|
jieyouxu
added
A-MIR
Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html
E-needs-mcve
Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example
A-layout
Area: Memory layout of types
and removed
needs-triage
This issue may need triage. Remove it if it has been sufficiently triaged.
labels
Apr 15, 2024
matthiaskrgr
added
the
S-bug-has-test
Status: This bug is tracked inside the repo by a `known-bug` test.
label
Apr 18, 2024
The usual -- the type is invalid ("enum discriminant overflowed"), but we're running MIR passes on that code anyway and so things fail because the MIR references invalid types. rustc is way too "good" at continuing the build when there was an error. Do we not have a systematic way to "taint" faulty data so that we can avoid later passes seeing invalid input? |
#[repr(u8)]
enum Enum {
_00, _01, _02, _03, _04, _05, _06, _07, _08, _09, _0A, _0B, _0C, _0D, _0E, _0F,
_10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _1A, _1B, _1C, _1D, _1E, _1F,
_20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _2A, _2B, _2C, _2D, _2E, _2F,
_30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _3A, _3B, _3C, _3D, _3E, _3F,
_40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _4A, _4B, _4C, _4D, _4E, _4F,
_50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _5A, _5B, _5C, _5D, _5E, _5F,
_60, _61, _62, _63, _64, _65, _66, _67, _68, _69, _6A, _6B, _6C, _6D, _6E, _6F,
_70, _71, _72, _73, _74, _75, _76, _77, _78, _79, _7A, _7B, _7C, _7D, _7E, _7F,
_80, _81, _82, _83, _84, _85, _86, _87, _88, _89, _8A, _8B, _8C, _8D, _8E, _8F,
_90, _91, _92, _93, _94, _95, _96, _97, _98, _99, _9A, _9B, _9C, _9D, _9E, _9F,
_A0, _A1, _A2, _A3, _A4, _A5, _A6, _A7, _A8, _A9, _AA, _AB, _AC, _AD, _AE, _AF,
_B0, _B1, _B2, _B3, _B4, _B5, _B6, _B7, _B8, _B9, _BA, _BB, _BC, _BD, _BE, _BF,
_C0, _C1, _C2, _C3, _C4, _C5, _C6, _C7, _C8, _C9, _CA, _CB, _CC, _CD, _CE, _CF,
_D0, _D1, _D2, _D3, _D4, _D5, _D6, _D7, _D8, _D9, _DA, _DB, _DC, _DD, _DE, _DF,
_E0, _E1, _E2, _E3, _E4, _E5, _E6, _E7, _E8, _E9, _EA, _EB, _EC, _ED, _EE, _EF,
_F0, _F1, _F2, _F3, _F4, _F5, _F6, _F7, _F8, _F9, _FA, _FB, _FC, _FD, _FE, _FF,
_100
}
fn main() {
if let Enum::_00 = Enum::_100 {}
} |
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Labels
A-layout
Area: Memory layout of types
A-MIR
Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html
C-bug
Category: This is a bug.
E-needs-mcve
Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
S-bug-has-test
Status: This bug is tracked inside the repo by a `known-bug` test.
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
auto-reduced (treereduce-rust): (from miri: tests/pass/enums.rs )
original code
original:
Version information
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc
Program output
The text was updated successfully, but these errors were encountered: