https://bugs.llvm.org/show_bug.cgi?id=44456
Bug ID: 44456
Summary: Assertion failure / segfault when internalizing
twice-promoted global value
Product: new-bugs
Version: 9.0
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: tman...@google.com
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org
I get "llvm::thinLTOInternalizeModule ... Assertion `GS !=
DefinedGlobals.end()' failed" consistently when compiling a particular Rust
crate.
This happens when handling the following symbol name:
switch.table._ZN77_$LT$omaha_client..protocol..request..Event$u20$as$u20$core..clone..Clone$GT$5clone17h829b64c9ab982ff5E.llvm.10390335839252477638.llvm.11308644296266801080
Note that this has _two_ .llvm extensions appended.
getOriginalNameBeforePromote chops off both extensions instead of only the last
one.
Changing getOriginalNameBeforePromote to only chop off the last one (with
rsplit instead of split) fixes the issue.
I do not yet have a simple reproducer. I'm hoping this is clearly a bug without
one, but if not I can get one ready.
See also https://github.com/rust-lang/rust/issues/67855
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