https://bugs.llvm.org/show_bug.cgi?id=34864
Bug ID: 34864
Summary: Deadlock inside llvm::parallel::TaskList::spawn stops
LLD compiled with MinGW-w64
Product: libraries
Version: trunk
Hardware: Other
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Support Libraries
Assignee: unassignedb...@nondot.org
Reporter: vasek.ge...@gmail.com
CC: llvm-bugs@lists.llvm.org
I managed to build the latest trunk with MinGW-w64 GCC 7.1.0 (posix-seh) and it
works fine producing cross-platform code.
During the tests I noticed that linking an ELF target on Windows host platform
with LLD results in a deadlock in llvm::parallel::TaskList::spawn (basically,
here: https://llvm.org/doxygen/Parallel_8cpp_source.html#l0098 ). The correct
ELF file is produced only if -Wlm--no-threads switch is added to clang command
line.
I tried to change the add() function like described here:
https://stackoverflow.com/questions/15912322/condition-variable-deadlock but
the deadlock moved into ~Latch destructor.
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