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RedBear-OS/local/recipes/dev/libclc/source/clang/test/CodeGenCXX/mangle-concept.cpp
T
vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class) 
verify-patch-sanity.py validates every active recipe .patch has internally-
consistent hunk line counts — catching the 'malformed patch at line N' failure
at commit/CI/preflight time instead of hours into a cook. This cycle hit that
class three times (qtwaylandscanner, sddm, xwayland), each only discovered when
cookbook tried to apply the patch.

Running it across the repo found 29 latent malformed patches (validated against
GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22').
They were harmless only because they sit in vendored recipes (baked, not re-
applied) — but would fail on any version-bump re-derivation. --fix recounts the
hunk headers (body untouched) and repaired all 29.

Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test
(test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats
(empty placeholders, bare-@@ git hunks).
2026-08-01 05:13:02 +03:00

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// RUN: %clang_cc1 -verify -std=c++20 -emit-llvm -triple %itanium_abi_triple -o - %s -fclang-abi-compat=latest | FileCheck %s
// RUN: %clang_cc1 -verify -std=c++20 -emit-llvm -triple %itanium_abi_triple -o - %s -fclang-abi-compat=19 | FileCheck %s --check-prefix=CLANG19
// RUN: %clang_cc1 -verify -std=c++20 -emit-llvm -triple %itanium_abi_triple -o - %s -fclang-abi-compat=17 | FileCheck %s --check-prefix=CLANG17
// expected-no-diagnostics
namespace test1 {
template <bool> struct S {};
template <typename> concept C = true;
template <typename T = int> S<C<T>> f0() { return S<C<T>>{}; }
template S<C<int>> f0<>();
// CHECK: @_ZN5test12f0IiEENS_1SIX1CIT_EEEEv(
// CLANG17: @_ZN5test12f0IiEENS_1SIL_ZNS_1CIT_EEEEEv(
}
template <bool> struct S {};
template <typename> concept C = true;
template <typename, typename> concept D = true;
template <typename T = int> S<test1::C<T>> f0a() { return S<C<T>>{}; }
template S<test1::C<int>> f0a<>();
// CHECK: @_Z3f0aIiE1SIXsr5test1E1CIT_EEEv(
// CLANG17: @_Z3f0aIiE1SIL_ZN5test11CIT_EEEEv(
template <typename T = int> S<C<T>> f0() { return S<C<T>>{}; }
template S<C<int>> f0<>();
// CHECK: @_Z2f0IiE1SIX1CIT_EEEv(
// CLANG17: @_Z2f0IiE1SIL_Z1CIT_EEEv(
template<typename T> concept True = true;
namespace test2 {
// Member-like friends.
template<typename T> struct A {
friend void f(...) requires True<T> {}
template<typename U = void>
friend void g(...) requires True<T> && True<U> {}
template<typename U = void>
friend void h(...) requires True<U> {}
template<typename U = void> requires True<T> && True<U>
friend void i(...) {}
template<typename U = void> requires True<U>
friend void j(...) {}
template<True U = void> requires True<T>
friend void k(...) {}
template<True U = void>
friend void l(...) {}
};
A<int> ai;
// CHECK-LABEL: define {{.*}}@{{.*}}test2{{.*}}use
void use() {
// CHECK: call {{.*}}@_ZN5test21AIiEF1fEzQ4TrueIT_E(
// CLANG17: call {{.*}}@_ZN5test21fEz(
f(ai);
// CHECK: call {{.*}}@_ZN5test21AIiEF1gIvEEvzQaa4TrueIT_E4TrueITL0__E(
// CLANG19: call {{.*}}@_ZN5test2F1gIvEEvzQaa4TrueIT_E4TrueITL0__E(
// CLANG17: call {{.*}}@_ZN5test21gIvEEvz(
g(ai);
// CHECK: call {{.*}}@_ZN5test21hIvEEvzQ4TrueITL0__E(
// CLANG17: call {{.*}}@_ZN5test21hIvEEvz(
h(ai);
// CHECK: call {{.*}}@_ZN5test21AIiEF1iIvQaa4TrueIT_E4TrueITL0__EEEvz(
// CLANG19: call {{.*}}@_ZN5test2F1iIvQaa4TrueIT_E4TrueITL0__EEEvz(
// CLANG17: call {{.*}}@_ZN5test21iIvEEvz(
i(ai);
// CHECK: call {{.*}}@_ZN5test21jIvQ4TrueITL0__EEEvz(
// CLANG17: call {{.*}}@_ZN5test21jIvEEvz(
j(ai);
// CHECK: call {{.*}}@_ZN5test21AIiEF1kITk4TruevQ4TrueIT_EEEvz(
// CLANG19: call {{.*}}@_ZN5test2F1kITk4TruevQ4TrueIT_EEEvz(
// CLANG17: call {{.*}}@_ZN5test21kIvEEvz(
k(ai);
// CHECK: call {{.*}}@_ZN5test21lITk4TruevEEvz(
// CLANG17: call {{.*}}@_ZN5test21lIvEEvz(
l(ai);
}
}
namespace test3 {
// Unconstrained auto.
template<auto> void d() {}
template void d<0>();
// CHECK: define {{.*}}@_ZN5test31dITnDaLi0EEEvv(
// CLANG17: define {{.*}}@_ZN5test31dILi0EEEvv(
template<decltype(auto)> void e() {}
template void e<0>();
// CHECK: define {{.*}}@_ZN5test31eITnDcLi0EEEvv(
// CLANG17: define {{.*}}@_ZN5test31eILi0EEEvv(
// Constrained auto.
template<C auto> void f() {}
template void f<0>();
// CHECK: define {{.*}}@_ZN5test31fITnDk1CLi0EEEvv(
// CLANG17: define {{.*}}@_ZN5test31fILi0EEEvv(
template<D<int> auto> void g() {}
template void g<0>();
// CHECK: define {{.*}}@_ZN5test31gITnDk1DIiELi0EEEvv(
// CLANG17: define {{.*}}@_ZN5test31gILi0EEEvv(
template<typename T, D<T> auto> void h() {}
template void h<int, 0>();
// CHECK: define {{.*}}@_ZN5test31hIiTnDk1DIT_ELi0EEEvv(
// CLANG17: define {{.*}}@_ZN5test31hIiLi0EEEvv(
template<typename T> void i(decltype(new C auto(T()))) {}
template void i<int>(int*);
// CHECK: define {{.*}}@_ZN5test31iIiEEvDTnw_Dk1CpicvT__EEE(
// CLANG17: define {{.*}}@_ZN5test31iIiEEvDTnw_DapicvT__EEE(
template<typename T> void j(decltype(new C decltype(auto)(T()))) {}
template void j<int>(int*);
// CHECK: define {{.*}}@_ZN5test31jIiEEvDTnw_DK1CpicvT__EEE(
// CLANG17: define {{.*}}@_ZN5test31jIiEEvDTnw_DcpicvT__EEE(
}
namespace test4 {
// Constrained type parameters.
template<C> void f() {}
template void f<int>();
// CHECK: define {{.*}}@_ZN5test41fITk1CiEEvv(
// CLANG17: define {{.*}}@_ZN5test41fIiEEvv(
template<D<int>> void g() {}
template void g<int>();
// CHECK: define {{.*}}@_ZN5test41gITk1DIiEiEEvv(
// CLANG17: define {{.*}}@_ZN5test41gIiEEvv(
}
namespace test5 {
// Exact-match vs non-exact-match template template parameters.
template<typename T, T V> struct X {};
template<typename T, T V> requires C<T> struct Y {};
template<C T, T V> struct Z {};
template<template<typename T, T> typename> void f() {}
// CHECK: define {{.*}}@_ZN5test51fINS_1XEEEvv(
template void f<X>();
// CHECK: define {{.*}}@_ZN5test51fITtTyTnTL0__ENS_1YEEEvv(
template void f<Y>();
// CHECK: define {{.*}}@_ZN5test51fITtTyTnTL0__ENS_1ZEEEvv(
template void f<Z>();
template<template<typename T, T> requires C<T> typename> void g() {}
// CHECK: define {{.*}}@_ZN5test51gITtTyTnTL0__Q1CIS1_EENS_1XEEEvv(
template void g<X>();
// CHECK: define {{.*}}@_ZN5test51gINS_1YEEEvv(
template void g<Y>();
// CHECK: define {{.*}}@_ZN5test51gITtTyTnTL0__Q1CIS1_EENS_1ZEEEvv(
template void g<Z>();
template<template<C T, T> typename> void h() {}
// CHECK: define {{.*}}@_ZN5test51hITtTk1CTnTL0__ENS_1XEEEvv(
template void h<X>();
// CHECK: define {{.*}}@_ZN5test51hITtTk1CTnTL0__ENS_1YEEEvv(
template void h<Y>();
// CHECK: define {{.*}}@_ZN5test51hINS_1ZEEEvv(
template void h<Z>();
// Packs must match the first argument.
template<template<C T, T> typename...> void i() {}
// CHECK: define {{.*}}@_ZN5test51iITpTtTk1CTnTL0__EJNS_1XENS_1YENS_1ZEEEEvv(
template void i<X, Y, Z>();
// CHECK: define {{.*}}@_ZN5test51iITpTtTk1CTnTL0__EJNS_1YENS_1ZENS_1XEEEEvv(
template void i<Y, Z, X>();
// CHECK: define {{.*}}@_ZN5test51iIJNS_1ZENS_1XENS_1YEEEEvv(
template void i<Z, X, Y>();
template<typename ...T> struct A {};
template<typename, typename> struct B {};
template<template<typename ...> typename> void p() {}
// CHECK: define {{.*}}@_ZN5test51pINS_1AEEEvv(
// CLANG17: define {{.*}}@_ZN5test51pINS_1AEEEvv(
template void p<A>();
// CHECK: define {{.*}}@_ZN5test51pITtTpTyENS_1BEEEvv(
// CLANG17: define {{.*}}@_ZN5test51pINS_1BEEEvv(
template void p<B>();
template<template<typename, typename> typename> void q() {}
// CHECK: define {{.*}}@_ZN5test51qITtTyTyENS_1AEEEvv(
// CLANG17: define {{.*}}@_ZN5test51qINS_1AEEEvv(
template void q<A>();
// CHECK: define {{.*}}@_ZN5test51qINS_1BEEEvv(
// CLANG17: define {{.*}}@_ZN5test51qINS_1BEEEvv(
template void q<B>();
}
namespace test6 {
// Abbreviated function templates.
void f(C auto) {}
// CHECK: define {{.*}}@_ZN5test61fITk1CiEEvT_(
// CLANG17: define {{.*}}@_ZN5test61fIiEEvT_(
template void f(int);
template<typename T>
void g(D<T> auto) {}
// CHECK: define {{.*}}@_ZN5test61gIiTk1DIT_EiEEvT0_(
// CLANG17: define {{.*}}@_ZN5test61gIiiEEvT0_(
template void g<int>(int);
}
namespace test7 {
// Constrained lambdas.
template<typename T> void f() {
// Ensure that requires-clauses affect lambda numbering.
// CHECK-LABEL: define {{.*}}@_ZN5test71fIiEEvv(
// CHECK: call {{.*}}@_ZZN5test71fIiEEvvENKUlTyQaa1CIT_E1CITL0__ET0_E_clIiiEEDaS3_Q1CIDtfp_EE(
([]<typename U> requires C<T> && C<U> (auto x) requires C<decltype(x)> {}).template operator()<int>(0);
// CHECK: call {{.*}}@_ZZN5test71fIiEEvvENKUlTyQaa1CIT_E1CITL0__ET0_E0_clIiiEEDaS3_Qaa1CIDtfp_EELb1E(
([]<typename U> requires C<T> && C<U> (auto x) requires C<decltype(x)> && true {}).template operator()<int>(0);
// CHECK: call {{.*}}@_ZZN5test71fIiEEvvENKUlTyQaa1CIT_E1CITL0__ET0_E1_clIiiEEDaS3_Q1CIDtfp_EE(
([]<typename U> requires C<T> && C<U> (auto x) requires C<decltype(x)> {}).template operator()<int>(0);
// CHECK: call {{.*}}@_ZZN5test71fIiEEvvENKUlTyT0_E_clIiiEEDaS1_(
([]<typename U> (auto x){}).template operator()<int>(0);
}
template void f<int>();
}
namespace gh67244 {
template<typename T, typename ...Ts> constexpr bool B = true;
template<typename T, typename ...Ts> concept C = B<T, Ts...>;
template<C<int, float> T> void f(T) {}
// CHECK: define {{.*}} @_ZN7gh672441fITkNS_1CIifEEiEEvT_(
template void f(int);
}
namespace gh67356 {
template<typename, typename T> concept C = true;
template<typename T> void f(T t, C<decltype(t)> auto) {}
// CHECK: define {{.*}} @_ZN7gh673561fIiTkNS_1CIDtfL0p_EEEiEEvT_T0_(
template void f(int, int);
// Note, we use `fL0p` not `fp` above because:
template<typename T> void g(T t, C<auto (T u) -> decltype(f(t, u))> auto) {}
// CHECK: define {{.*}} @_ZN7gh673561gIiTkNS_1CIFDTcl1ffL0p_fp_EET_EEEiEEvS3_T0_(
template void g(int, int);
}
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