https://bugs.llvm.org/show_bug.cgi?id=40613
Bug ID: 40613
Summary: Code coverage crashing on windows
Product: compiler-rt
Version: 7.0
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: profile
Assignee: unassignedb...@nondot.org
Reporter: mariusguggen...@gmail.com
CC: llvm-bugs@lists.llvm.org
Created attachment 21437
--> https://bugs.llvm.org/attachment.cgi?id=21437&action=edit
sample code + binary + crash dump + description
TLDR: Small sample compiled on windows (clang-cl) with source code coverage
crashes in initializeValueProfRuntimeRecord
Host:
64 bit windows 10, 1803
VM in VirtualBox
AMD Ryzen 1700X
10GB RAM
>git status
On branch release/7.x
Your branch is up to date with 'origin/release/7.x'
Compiled with MSVC 19.16.27026.1
> clang-cl --version
clang version 7.1.0
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: C:\Program Files\LLVM701\bin
Build simple test program (source and binary attached) with source code
coverage, i.e.
"-fprofile-instr-generate -fcoverage-mapping"
Run it. It crashes in compiler-rt/lib/InstrProfilingValue.c (334)
Crash (also see test.dmp):
332 while (Site) {
333 C++;
334 --> Site = Site->Next;
335 }
Site: 0x959a638761943be0 (invalid memory address)
[0x0] test!initializeValueProfRuntimeRecord + 0x14d
[0x1] test!writeOneValueProfData + 0x15d
[0x2] test!writeValueProfData + 0x8b
[0x3] test!lprofWriteDataImpl + 0x270
[0x4] test!lprofWriteData + 0xbc
[0x5] test!writeFile + 0xbd
[0x6] test!__llvm_profile_write_file + 0x179
[0x7] test!writeFileWithoutReturn + 0x1a
Note that this is not c++ specific. I originally tested the sample as c code
with the same results.
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