Fix: resolve nested attributes of anonymous records in GetDatamembers by Vipul-Cariappa · Pull Request #321 · compiler-research/CppInterOp

Vipul-Cariappa · 2024-09-12T07:00:39Z

No description provided.

Vipul-Cariappa · 2024-09-12T07:06:09Z

Fixes: https://github.com/Vipul-Cariappa/cppyy-compiler-research/blob/9a73ba6a0cda758991827e51141f3893002dcae5/test/test_datatypes.py#L1562-L1563 and https://github.com/Vipul-Cariappa/cppyy-compiler-research/blob/9a73ba6a0cda758991827e51141f3893002dcae5/test/test_datatypes.py#L1656-L1657 without any extra modification.

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lib/Interpreter/CppInterOp.cpp

unittests/CppInterOp/VariableReflectionTest.cpp

Vipul-Cariappa · 2024-09-12T07:13:57Z

The test fail with ISO C++ prohibits anonymous structs [-Werror=pedantic], and one of the tests has an anonymous struct.
We have a similar anonymous struct in the cppyy tests.
Should I add -Wno-pedantic to the compiler flags?

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

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clang-tidy made some suggestions

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lib/Interpreter/CppInterOp.cpp

unittests/CppInterOp/VariableReflectionTest.cpp

vgvassilev · 2024-09-12T07:27:37Z

lib/Interpreter/CppInterOp.cpp

+        if (D->getKind() == clang::Decl::Field &&
+            dyn_cast<FieldDecl>(D)->isAnonymousStructOrUnion()) {


Suggested change

if (D->getKind() == clang::Decl::Field &&

dyn_cast<FieldDecl>(D)->isAnonymousStructOrUnion()) {

if (isa<FieldDecl>(D) &&

cast<FieldDecl>(D)->isAnonymousStructOrUnion()) {

I think we should have a proper dyn_cast and isAnonymousStructOrUnion as a nested if...

vgvassilev · 2024-09-12T07:31:14Z

The test fail with ISO C++ prohibits anonymous structs [-Werror=pedantic], and one of the tests has an anonymous struct. We have a similar anonymous struct in the cppyy tests. Should I add -Wno-pedantic to the compiler flags?

Yes, but only for this test file.

github-actions

clang-tidy made some suggestions

lib/Interpreter/CppInterOp.cpp

unittests/CppInterOp/VariableReflectionTest.cpp

Vipul-Cariappa · 2024-09-12T14:07:35Z

Hi @vgvassilev, Valgrind fails. Should I add

if (llvm::sys::RunningOnValgrind())
    GTEST_SKIP() << "XFAIL due to Valgrind report";

?

It is Conditional jump or move depends on uninitialised value(s) at LLVM's code base, according to my eyes.

vgvassilev · 2024-09-12T16:40:16Z

lib/Interpreter/CppInterOp.cpp

+          continue;
+        }
+        Decl* D = *(stack_begin.back());
+        if (D->getKind() == clang::Decl::Field) {


Suggested change

if (D->getKind() == clang::Decl::Field) {

vgvassilev · 2024-09-12T17:05:24Z

lib/Interpreter/CppInterOp.cpp

+      const clang::RecordDecl* RD = FD->getParent();
+      intptr_t offset =
+          C.toCharUnitsFromBits(
+               C.getASTRecordLayout(RD).getFieldOffset(FD->getFieldIndex()))


Suggested change

C.getASTRecordLayout(RD).getFieldOffset(FD->getFieldIndex()))

C.getFieldOffset(FD)

github-actions

clang-tidy made some suggestions

github-actions · 2024-09-13T03:43:01Z

lib/Interpreter/CppInterOp.cpp

+        if (auto* FD = llvm::dyn_cast<FieldDecl>(D)) {
+          if (FD->isAnonymousStructOrUnion()) {
+            if (auto* CXXRD = llvm::dyn_cast_or_null<CXXRecordDecl>(
+                    FD->getType()->getAs<RecordType>()->getDecl())) {


warning: Called C++ object pointer is null [clang-analyzer-core.CallAndMessage]

FD->getType()->getAs<RecordType>()->getDecl())) { ^

Additional context

lib/Interpreter/CppInterOp.cpp:1128: Assuming 'D' is a 'CastReturnType'

if (auto *CXXRD = llvm::dyn_cast_or_null<CXXRecordDecl>(D)) { ^

lib/Interpreter/CppInterOp.cpp:1128: 'CXXRD' is non-null

if (auto *CXXRD = llvm::dyn_cast_or_null<CXXRecordDecl>(D)) { ^

lib/Interpreter/CppInterOp.cpp:1128: Taking true branch

if (auto *CXXRD = llvm::dyn_cast_or_null<CXXRecordDecl>(D)) { ^

lib/Interpreter/CppInterOp.cpp:1134: Loop condition is true. Entering loop body

while (!stack_begin.empty()) { ^

lib/Interpreter/CppInterOp.cpp:1135: Taking false branch

if (stack_begin.back() == stack_end.back()) { ^

lib/Interpreter/CppInterOp.cpp:1141: Assuming 'D' is a 'CastReturnType'

if (auto* FD = llvm::dyn_cast<FieldDecl>(D)) { ^

lib/Interpreter/CppInterOp.cpp:1141: 'FD' is non-null

if (auto* FD = llvm::dyn_cast<FieldDecl>(D)) { ^

lib/Interpreter/CppInterOp.cpp:1141: Taking true branch

if (auto* FD = llvm::dyn_cast<FieldDecl>(D)) { ^

lib/Interpreter/CppInterOp.cpp:1142: Assuming the condition is true

if (FD->isAnonymousStructOrUnion()) { ^

lib/Interpreter/CppInterOp.cpp:1142: Taking true branch

if (FD->isAnonymousStructOrUnion()) { ^

lib/Interpreter/CppInterOp.cpp:1144: Assuming the object is not a 'const RecordType *'

FD->getType()->getAs<RecordType>()->getDecl())) { ^

lib/Interpreter/CppInterOp.cpp:1144: Called C++ object pointer is null

FD->getType()->getAs<RecordType>()->getDecl())) { ^

vgvassilev · 2024-09-13T05:22:02Z

Hi @vgvassilev, Valgrind fails. Should I add
if (llvm::sys::RunningOnValgrind())
    GTEST_SKIP() << "XFAIL due to Valgrind report";
?

It is Conditional jump or move depends on uninitialised value(s) at LLVM's code base, according to my eyes.

Yes, please do.

lib/Interpreter/CppInterOp.cpp

github-actions

clang-tidy made some suggestions

lib/Interpreter/CppInterOp.cpp

github-actions · 2024-09-13T06:22:52Z

lib/Interpreter/CppInterOp.cpp

+    if (auto* FD = llvm::dyn_cast<FieldDecl>(D)) {
+      const clang::RecordDecl* RD = FD->getParent();
+      intptr_t offset =
+          C.toCharUnitsFromBits(C.getFieldOffset(FD)).getQuantity();


warning: narrowing conversion from 'uint64_t' (aka 'unsigned long') to signed type 'int64_t' (aka 'long') is implementation-defined [cppcoreguidelines-narrowing-conversions]

C.toCharUnitsFromBits(C.getFieldOffset(FD)).getQuantity(); ^

github-actions · 2024-09-13T06:22:52Z

lib/Interpreter/CppInterOp.cpp

+            break;
+          }
+        }
+        offset += C.toCharUnitsFromBits(C.getFieldOffset(FD)).getQuantity();


warning: narrowing conversion from 'uint64_t' (aka 'unsigned long') to signed type 'int64_t' (aka 'long') is implementation-defined [cppcoreguidelines-narrowing-conversions]

offset += C.toCharUnitsFromBits(C.getFieldOffset(FD)).getQuantity(); ^

codecov · 2024-09-13T06:22:55Z

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.69%. Comparing base (ea73105) to head (36f9aee).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #321      +/-   ##
==========================================
+ Coverage   73.44%   73.69%   +0.25%     
==========================================
  Files           8        8              
  Lines        2990     3019      +29     
==========================================
+ Hits         2196     2225      +29     
  Misses        794      794

Files with missing lines	Coverage Δ
lib/Interpreter/CppInterOp.cpp	`79.54% <100.00%> (+0.34%)`	⬆️

Files with missing lines	Coverage Δ
lib/Interpreter/CppInterOp.cpp	`79.54% <100.00%> (+0.34%)`	⬆️

Co-authored-by: Vassil Vassilev <v.g.vassilev@gmail.com> Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

vgvassilev

Lgtm!

fixed by compiler-research/CppInterOp#321

Fix: resolve nested attributes of anonymous records in GetDatamembers

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Vipul-Cariappa added 2 commits September 12, 2024 13:47

suggestions from code review & disable anonymous struct warning for test

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disabling warning if not windows

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Vipul-Cariappa and others added 2 commits September 13, 2024 12:07

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Co-authored-by: Vassil Vassilev <v.g.vassilev@gmail.com> Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

clang format change

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vgvassilev approved these changes Sep 13, 2024

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vgvassilev merged commit 33546ba into compiler-research:main Sep 13, 2024

Vipul-Cariappa mentioned this pull request Sep 17, 2024

Fix: AttributeError with anonymous unions compiler-research/CPyCppyy#57

Closed

Vipul-Cariappa added a commit to Vipul-Cariappa/cppyy-compiler-research that referenced this pull request Sep 17, 2024

removing xfail on anonymous struct and union tests

75be085

fixed by compiler-research/CppInterOp#321

Vipul-Cariappa mentioned this pull request Sep 17, 2024

removing xfail on anonymous struct and union tests compiler-research/cppyy#99

Merged

Vipul-Cariappa added a commit to Vipul-Cariappa/cppyy-compiler-research that referenced this pull request Sep 19, 2024

removing xfail on anonymous struct and union tests

e7b29cd

fixed by compiler-research/CppInterOp#321

Vipul-Cariappa added a commit to Vipul-Cariappa/cppyy-compiler-research that referenced this pull request Sep 19, 2024

removing xfail on anonymous union test

0f355df

fixed by compiler-research/CppInterOp#321

aaronj0 pushed a commit to compiler-research/cppyy that referenced this pull request Sep 19, 2024

removing xfail on anonymous union test

f4f859f

fixed by compiler-research/CppInterOp#321

Vipul-Cariappa deleted the Anonymous branch September 28, 2024 04:16

		if (D->getKind() == clang::Decl::Field &&
		dyn_cast<FieldDecl>(D)->isAnonymousStructOrUnion()) {

	C.getASTRecordLayout(RD).getFieldOffset(FD->getFieldIndex()))
	C.getFieldOffset(FD)

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Vipul-Cariappa commented Sep 12, 2024

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