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Fix C++ demangling for _BitInt type #143466

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Merged
merged 4 commits into from
Jun 25, 2025
Merged

Fix C++ demangling for _BitInt type #143466

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13feed5
Fix C++ demangling for _BitInt type
lfmeadow Jun 10, 2025
9f4ac96
Update ItaniumDemangle.h
lfmeadow Jun 18, 2025
defd09d
Update ItaniumDemangle.h
lfmeadow Jun 18, 2025
280e728
Merge branch 'main' into bitint-demangle-fix
lfmeadow Jun 18, 2025
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4 changes: 3 additions & 1 deletion libcxxabi/src/demangle/ItaniumDemangle.h
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Original file line number Diff line number Diff line change
Expand Up @@ -4468,7 +4468,9 @@ Node *AbstractManglingParser<Derived, Alloc>::parseType() {
return nullptr;
if (!consumeIf('_'))
return nullptr;
return make<BitIntType>(Size, Signed);
// The FE expects this to be available for Substitution
Result = make<BitIntType>(Size, Signed);
break;
}
// ::= Di # char32_t
case 'i':
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1 change: 1 addition & 0 deletions libcxxabi/test/DemangleTestCases.inc
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Expand Up @@ -6,6 +6,7 @@
{"_Z1fDU10_", "f(unsigned _BitInt(10))"},
{"_Z1fIfEvDUstPT__", "void f<float>(unsigned _BitInt(sizeof (float*)))"},
{"_Z1fIiEvDBstPT__", "void f<int>(_BitInt(sizeof (int*)))"},
{"_Z6myfuncRDB8_S0_", "myfunc(_BitInt(8)&, _BitInt(8)&)"},
{"_Z4testI1A1BE1Cv", "C test<A, B>()"},
{"_Z4testI1A1BET0_T_S3_", "B test<A, B>(A, A)"},
{"_ZN1SgtEi", "S::operator>(int)"},
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4 changes: 3 additions & 1 deletion llvm/include/llvm/Demangle/ItaniumDemangle.h
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Original file line number Diff line number Diff line change
Expand Up @@ -4468,7 +4468,9 @@ Node *AbstractManglingParser<Derived, Alloc>::parseType() {
return nullptr;
if (!consumeIf('_'))
return nullptr;
return make<BitIntType>(Size, Signed);
// The FE expects this to be available for Substitution
Result = make<BitIntType>(Size, Signed);
break;
}
// ::= Di # char32_t
case 'i':
Expand Down
1 change: 1 addition & 0 deletions llvm/include/llvm/Testing/Demangle/DemangleTestCases.inc
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
{"_Z1fDU10_", "f(unsigned _BitInt(10))"},
{"_Z1fIfEvDUstPT__", "void f<float>(unsigned _BitInt(sizeof (float*)))"},
{"_Z1fIiEvDBstPT__", "void f<int>(_BitInt(sizeof (int*)))"},
{"_Z6myfuncRDB8_S0_", "myfunc(_BitInt(8)&, _BitInt(8)&)"},
{"_Z4testI1A1BE1Cv", "C test<A, B>()"},
{"_Z4testI1A1BET0_T_S3_", "B test<A, B>(A, A)"},
{"_ZN1SgtEi", "S::operator>(int)"},
Expand Down
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