https://llvm.org/bugs/show_bug.cgi?id=30702
Bug ID: 30702
Summary: ICE when compiling with --coverage but without -g
Product: tools
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: gccas
Assignee: unassignedb...@nondot.org
Reporter: charles...@playstation.sony.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
We noticed an ICE when compiling a file with the flag '--coverage' but without
'-g'.
This happens on many test-cases (maybe all test-cases), even empty test cases.
This ICE is related to commits r264657 and r281508.
To reproduce this crash:
Create (empty) test-case
$ touch t.cpp
Successful compilation:
$ clang -c -g --coverage t.cpp
Crash:
$ clang -c --coverage t.cpp
All DICompileUnits must be listed in llvm.dbg.cu
clang: ..../llvm/lib/IR/Verifier.cpp:4432:
virtual bool {anonymous}::VerifierLegacyPass::doFinalization(llvm::Module&):
Assertion `!V->hasBrokenDebugInfo() && "Module contains invalid debug info"'
failed.
#0 0x0000000001c81da5 llvm::sys::PrintStackTrace(llvm::raw_ostream&) ...
...
clang: error: clang frontend command failed due to signal
(use -v to see invocation) clang version 4.0.0 (trunk 281550)
Target: x86_64-unknown-linux-gnu
Thread model: posix
...
I looked into the history of this ICE.
Prior to r264657, the compiler finishes normally (return code 0).
Starting at r264657, the compiler produces the message:
All DICompileUnits must be listed in llvm.dbg.cu
and exits with a fatal error.
Starting at r281508, the compiler still produces the message:
All DICompileUnits must be listed in llvm.dbg.cu
and also triggers the Verifier.cpp failure:
"Module contains invalid debug info"
and then produces the stack dump.
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