3b4c51bb32
Fixes #123300
What is seen
```
clang-repl> int x = 42;
clang-repl> auto capture = [&]() { return x * 2; };
In file included from <<< inputs >>>:1:
input_line_4:1:17: error: non-local lambda expression cannot have a capture-default
1 | auto capture = [&]() { return x * 2; };
| ^
zsh: segmentation fault clang-repl --Xcc="-v"
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x8)
* frame #0: 0x0000000107b4f8b8 libclang-cpp.19.1.dylib`clang::IncrementalParser::CleanUpPTU(clang::PartialTranslationUnit&) + 988
frame #1: 0x0000000107b4f1b4 libclang-cpp.19.1.dylib`clang::IncrementalParser::ParseOrWrapTopLevelDecl() + 416
frame #2: 0x0000000107b4fb94 libclang-cpp.19.1.dylib`clang::IncrementalParser::Parse(llvm::StringRef) + 612
frame #3: 0x0000000107b52fec libclang-cpp.19.1.dylib`clang::Interpreter::ParseAndExecute(llvm::StringRef, clang::Value*) + 180
frame #4: 0x0000000100003498 clang-repl`main + 3560
frame #5: 0x000000018d39a0e0 dyld`start + 2360
```
Though the error is justified, we shouldn't be interested in exiting
through a segfault in such cases.
The issue is that empty named decls weren't being taken care of
resulting into this assert
c1a2292526/clang/include/clang/AST/DeclarationName.h (L503)
Can also be seen when the example is attempted through xeus-cpp-lite.
28 lines
707 B
C++
28 lines
707 B
C++
// REQUIRES: host-supports-jit
|
|
// UNSUPPORTED: system-aix
|
|
// RUN: cat %s | clang-repl | FileCheck %s
|
|
// RUN: cat %s | clang-repl -Xcc -Xclang -Xcc -verify -Xcc -O2 | FileCheck %s
|
|
|
|
extern "C" int printf(const char *, ...);
|
|
|
|
auto l1 = []() { printf("ONE\n"); return 42; };
|
|
auto l2 = []() { printf("TWO\n"); return 17; };
|
|
|
|
auto r1 = l1();
|
|
// CHECK: ONE
|
|
auto r2 = l2();
|
|
// CHECK: TWO
|
|
auto r3 = l2();
|
|
// CHECK: TWO
|
|
|
|
// Verify non-local lambda capture error is correctly reported
|
|
int x = 42;
|
|
|
|
// expected-error {{non-local lambda expression cannot have a capture-default}}
|
|
auto capture = [&]() { return x * 2; };
|
|
|
|
// Ensure interpreter continues and x is still valid
|
|
printf("x = %d\n", x);
|
|
// CHECK: x = 42
|
|
|
|
%quit |