Most of the cases were where a C++ file was being compiled with the C substitution. There were a few cases of the opposite though. LLDB seems to be the only real culprit in the LLVM codebase for these mismatches. Rest of the LLVM presumably sticks at least language-specific options in the common substitutions making the mistakes immediately apparent. I found these by using Clang frontend configuration files containing language-specific options for both C and C++ (e.g. `-std=c2y` and `-std=c++26`).
89 lines
2.1 KiB
Plaintext
89 lines
2.1 KiB
Plaintext
# RUN: split-file %s %t
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# RUN: %clangxx_host -g %t/main.cpp -o %t.out
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#
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# RUN: %lldb -x -b -o "settings set interpreter.stop-command-source-on-error false" \
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# RUN: -s %t/no-target.input 2>&1 | FileCheck %s --check-prefix=CHECK-NO-TARGET
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#
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# RUN: %lldb %t.out -x -b -o "settings set interpreter.stop-command-source-on-error false" \
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# RUN: -s %t/with-target.input 2>&1 | FileCheck %s --check-prefix=CHECK-TARGET
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#--- main.cpp
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int main() {
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int x = 10;
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return x;
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}
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#--- with-target.input
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expr blah
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# CHECK-TARGET: (lldb) expr
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# CHECK-TARGET: note: Falling back to default language. Ran expression as 'Objective C++'.
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b 4
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run
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expr blah
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# CHECK-TARGET: (lldb) expr
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# CHECK-TARGET: note: Ran expression as '{{(ISO )?}}C++{{.*}}'
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expr -l objc -- blah
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# CHECK-TARGET: (lldb) expr
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# CHECK-TARGET: note: Expression evaluation in pure Objective-C not supported. Ran expression as 'Objective C++'.
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expr -l c -- blah
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# CHECK-TARGET: (lldb) expr
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# CHECK-TARGET: note: Expression evaluation in pure C not supported. Ran expression as 'ISO C++'.
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expr -l c++14 -- blah
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# CHECK-TARGET: (lldb) expr
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# CHECK-TARGET: note: Ran expression as 'C++14'
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expr -l c++20 -- blah
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# CHECK-TARGET: (lldb) expr
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# CHECK-TARGET: note: Ran expression as 'C++20'
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expr -l objective-c++ -- blah
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# CHECK-TARGET: (lldb) expr
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# CHECK-TARGET: note: Ran expression as 'Objective C++'
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# D uses TypeSystemClang but running expressions in it isn't supported. Test that we warn about this.
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expr -l D -- blah
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# CHECK-TARGET: (lldb) expr
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# CHECK-TARGET: note: Expression evaluation in D not supported. Falling back to default language. Ran expression as 'Objective C++'.
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expr -l c++17 -- x = 5
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# CHECK-TARGET: (lldb) expr
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# CHECK-TARGET-NOT: note:
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expr x = 5
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# CHECK-TARGET: (lldb) expr
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# CHECK-TARGET-NOT: note:
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#--- no-target.input
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expr blah
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# CHECK-NO-TARGET: (lldb) expr
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# CHECK-NO-TARGET: note: Falling back to default language. Ran expression as 'Objective C++'.
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expr -l c++ -- 1 + 1
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# CHECK-NO-TARGET: (lldb) expr
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# CHECK-NO-TARGET-NOT: note:
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expr 1 + 1
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# CHECK-NO-TARGET: (lldb) expr
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# CHECK-NO-TARGET-NOT: note:
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