https://llvm.org/bugs/show_bug.cgi?id=31699
Bug ID: 31699
Summary: [Windows] LLDB crashes when launched with a startup
script on the command line.
Product: lldb
Version: 4.0
Hardware: PC
OS: Windows XP
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: lldb-dev@lists.llvm.org
Reporter: vadi...@gmail.com
CC: llvm-b...@lists.llvm.org
Classification: Unclassified
- Install LLVM for Windows snapshot build from http://llvm.org/build (SVN
r291454, built on 9 January 2017 at the time of filing this).
- Launch LLDB: lldb -O "p 42".
- LLDB crashes.
I've tracked the cause down to snapshot builds being built with a statically
linked CRT (-DLLVM_USE_CRT_RELEASE=MT). When a startup script is given on the
command line, lldb.exe creates a pipe, writes the script into the write end,
wraps a stdio file around the read end, and gives the resulting FILE* to
SBDebugger::SetInputFileHandle(). Unfortunately, since SBDebugger lives in
liblldb.dll, with its own copy of the CRT, that handle is not valid there.
Later, it tries to read from that handle, and... boom.
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