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[clang] Fix -Wuninitialized for values passed by const pointers #147221

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Merged
merged 5 commits into from
Jul 14, 2025
Merged

[clang] Fix -Wuninitialized for values passed by const pointers #147221

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f1e26fe
[clang] Fix -Wuninitialized for values passed by const pointers
igorkudrin Jul 5, 2025
d63b5dc
fixup! libcxx tests
igorkudrin Jul 7, 2025
4ff02a7
fixup! Do not detect passing a value by a constant pointer
igorkudrin Jul 8, 2025
d58b066
Merge branch 'main' into const-ptr-uninitialized
igorkudrin Jul 11, 2025
d3ca8c1
Merge branch 'main' into const-ptr-uninitialized
igorkudrin Jul 14, 2025
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2 changes: 0 additions & 2 deletions clang/lib/Analysis/UninitializedValues.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -446,8 +446,6 @@ void ClassifyRefs::VisitCallExpr(CallExpr *CE) {
const auto *UO = dyn_cast<UnaryOperator>(Ex);
if (UO && UO->getOpcode() == UO_AddrOf)
classify(UO->getSubExpr(), isTrivialBody ? Ignore : ConstPtrUse);
else
classify(Ex, Ignore);
}
}
}
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4 changes: 4 additions & 0 deletions clang/test/SemaCXX/uninitialized.cpp
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Expand Up @@ -185,6 +185,10 @@ void test_const_ptr() {
const int *ptr2;
foo(ptr); // expected-warning {{variable 'ptr' is uninitialized when used here}}
foobar(&ptr2);
int *ptr3; // expected-note {{initialize the variable 'ptr3' to silence this warning}}
const int *ptr4; // expected-note {{initialize the variable 'ptr4' to silence this warning}}
bar(ptr3); // expected-warning {{variable 'ptr3' is uninitialized when used here}}
bar(ptr4); // expected-warning {{variable 'ptr4' is uninitialized when used here}}
}
}

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