https://bugs.llvm.org/show_bug.cgi?id=43293
Bug ID: 43293
Summary: C++17 Lambda-expression with implicit capture fails to
compile.
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: C++17
Assignee: unassignedclangb...@nondot.org
Reporter: chackz0...@gmail.com
CC: blitzrak...@gmail.com, erik.pilking...@gmail.com,
llvm-bugs@lists.llvm.org, richard-l...@metafoo.co.uk
Created attachment 22489
--> https://bugs.llvm.org/attachment.cgi?id=22489&action=edit
reproducible
Good day,
I believe I may have discovered a bug in TOT clang. When compiling the attached
reproducible with the following command:
clang ./repro.cpp -g -O2 -std=gnu++17
I get the following error message:
./repro.cpp:9:19: error: variable 'myFoo' cannot be implicitly captured in a
lambda with no capture-default specified
static_assert(myFoo);
I've checked cpp reference and done a, albeit shallow, dive into the spec and I
can't find any contrary definitions that state the repro shouldn't compile.
The test compiles fine with GCC 9.2 on godbolt and also with clang 8.0.
The change in behaviour was introduced in r363086,
715f7a1bd058c64a39cc4773114dfb46ae8cc8a3 (monorepo).
can anyone confirm the following.
1. the test is either well formed or not.
2. is this a genuine bug.
Thank you for your valuable time.
Tom W
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