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RedBear-OS/local/recipes/dev/libclc/source/clang/test/SemaOpenACC/loop-construct-collapse-clause.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 %s -fopenacc -verify
void only_for_loops() {
// expected-error@+3{{OpenACC 'loop' construct can only be applied to a 'for' loop}}
// expected-note@+1{{'loop' construct is here}}
#pragma acc loop collapse(1)
while(true);
// expected-error@+3{{OpenACC 'loop' construct can only be applied to a 'for' loop}}
// expected-note@+1{{'loop' construct is here}}
#pragma acc loop collapse(1)
do{}while(true);
}
void only_one_on_loop() {
// expected-error@+2{{OpenACC 'collapse' clause cannot appear more than once on a 'loop' directive}}
// expected-note@+1{{previous 'collapse' clause is here}}
#pragma acc loop collapse(1) collapse(1)
for(int i = 0; i < 5; ++i);
}
constexpr int three() { return 3; }
constexpr int one() { return 1; }
constexpr int neg() { return -1; }
constexpr int zero() { return 0; }
struct NotConstexpr {
constexpr NotConstexpr(){};
operator int(){ return 1; }
};
struct ConvertsNegative {
constexpr ConvertsNegative(){};
constexpr operator int(){ return -1; }
};
struct ConvertsOne{
constexpr ConvertsOne(){};
constexpr operator int(){ return 1; }
};
struct ConvertsThree{
constexpr ConvertsThree(){};
constexpr operator int(){ return 3; }
};
template <typename T, int Val>
void negative_constexpr_templ() {
// expected-error@+3 2{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to 0}}
// expected-note@#NCETN1{{in instantiation of function template specialization 'negative_constexpr_templ<int, -1>'}}
// expected-note@#NCET1{{in instantiation of function template specialization 'negative_constexpr_templ<int, 1>'}}
#pragma acc loop collapse(T{})
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to -1}}
#pragma acc loop collapse(Val)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
}
void negative_constexpr(int i) {
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
#pragma acc loop collapse(1)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to 0}}
#pragma acc loop collapse(0)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to -1}}
#pragma acc loop collapse(-1)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
#pragma acc loop collapse(one())
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to 0}}
#pragma acc loop collapse(zero())
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to -1}}
#pragma acc loop collapse(neg())
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+1{{OpenACC 'collapse' clause loop count must be a constant expression}}
#pragma acc loop collapse(NotConstexpr{})
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+1{{OpenACC 'collapse' clause loop count must be a positive integer value, evaluated to -1}}
#pragma acc loop collapse(ConvertsNegative{})
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
#pragma acc loop collapse(ConvertsOne{})
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
negative_constexpr_templ<int, -1>(); // #NCETN1
negative_constexpr_templ<int, 1>(); // #NCET1
}
template<unsigned Val>
void depth_too_high_templ() {
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(Val)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
}
void depth_too_high() {
depth_too_high_templ<3>(); // expected-note{{in instantiation of function template specialization}}
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(3)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(three())
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(ConvertsThree{})
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
}
template<typename T, unsigned Three>
void not_single_loop_templ() {
T Arr[5];
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1 2{{active 'collapse' clause defined here}}
#pragma acc loop collapse(3)
for(auto x : Arr) {
for(auto y : Arr){
do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
}
}
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1 2{{active 'collapse' clause defined here}}
#pragma acc loop collapse(Three)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
}
}
#pragma acc loop collapse(Three)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
for(unsigned k = 0; k < 5;++k) {
do{}while(true);
}
}
}
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1 2{{active 'collapse' clause defined here}}
#pragma acc loop collapse(Three)
for(auto x : Arr) {
for(auto y: Arr) {
do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
}
}
#pragma acc loop collapse(Three)
for(auto x : Arr) {
for(auto y: Arr) {
for(auto z: Arr) {
do{}while(true);
}
}
}
}
void not_single_loop() {
not_single_loop_templ<int, 3>(); // expected-note{{in instantiation of function template}}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(3)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
for(unsigned k = 0; k < 5;++k);
}
while(true); // expected-error{{while loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(3)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
for(unsigned k = 0; k < 5;++k);
}
do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
}
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1 2{{active 'collapse' clause defined here}}
#pragma acc loop collapse(3)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
while(true); // expected-error{{while loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
}
}
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1 2{{active 'collapse' clause defined here}}
#pragma acc loop collapse(3)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
}
}
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
do{}while(true);
}
}
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
while(true);
}
}
int Arr[5];
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1 2{{active 'collapse' clause defined here}}
#pragma acc loop collapse(3)
for(auto x : Arr) {
for(auto y : Arr){
do{}while(true); // expected-error{{do loop cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
}
}
// expected-note@+1 {{active 'collapse' clause defined here}}
#pragma acc loop collapse(3)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
for(unsigned k = 0; k < 5;++k);
}
// expected-error@+1{{more than one for-loop in a loop associated with OpenACC 'loop' construct with a 'collapse' clause}}
for(unsigned k = 0; k < 5;++k);
}
// expected-note@+1 {{active 'collapse' clause defined here}}
#pragma acc loop collapse(3)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
for(unsigned k = 0; k < 5;++k);
// expected-error@+1{{more than one for-loop in a loop associated with OpenACC 'loop' construct with a 'collapse' clause}}
for(unsigned k = 0; k < 5;++k);
}
}
for(unsigned k = 0; k < 5;++k);
#pragma acc loop collapse(3)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
for(unsigned k = 0; k < 5;++k);
}
}
}
template<unsigned Two, unsigned Three>
void no_other_directives() {
#pragma acc loop collapse(Two)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {// last loop associated with the top level.
// expected-error@+1{{'collapse' clause specifies a loop count greater than the number of available loops}}
#pragma acc loop collapse(Three) // expected-note 2{{active 'collapse' clause defined here}}
for(unsigned k = 0; k < 6;++k) {
for(unsigned l = 0; l < 5; ++l) {
// expected-error@+1{{OpenACC 'serial' construct cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
#pragma acc serial
;
}
}
}
}
#pragma acc loop collapse(Two)// expected-note{{active 'collapse' clause defined here}}
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {// last loop associated with the top level.
#pragma acc loop collapse(Three)
for(unsigned k = 0; k < 6;++k) {
for(unsigned l = 0; l < 5; ++l) {
for(unsigned m = 0; m < 5; ++m);
}
}
}
// expected-error@+1{{OpenACC 'serial' construct cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
#pragma acc serial
;
}
}
void no_other_directives() {
no_other_directives<2,3>(); // expected-note{{in instantiation of function template specialization}}
// Ok, not inside the intervening list
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
// expected-error@+1{{OpenACC 'data' construct must have at least one 'attach', 'copy', 'copyin', 'copyout', 'create', 'default', 'deviceptr', 'no_create', or 'present' clause}}
#pragma acc data
;
}
}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i) {
// expected-error@+2{{OpenACC 'data' construct must have at least one 'attach', 'copy', 'copyin', 'copyout', 'create', 'default', 'deviceptr', 'no_create', or 'present' clause}}
// expected-error@+1{{OpenACC 'data' construct cannot appear in intervening code of a 'loop' with a 'collapse' clause}}
#pragma acc data
for(unsigned j = 0; j < 5; ++j) {
}
}
}
void call();
template<unsigned Two>
void intervening_without_force_templ() {
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i) {
// expected-error@+1{{inner loops must be tightly nested inside a 'collapse' clause on a 'loop' construct}}
call();
for(unsigned j = 0; j < 5; ++j);
}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(Two)
for(unsigned i = 0; i < 5; ++i) {
// expected-error@+1{{inner loops must be tightly nested inside a 'collapse' clause on a 'loop' construct}}
call();
for(unsigned j = 0; j < 5; ++j);
}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j);
// expected-error@+1{{inner loops must be tightly nested inside a 'collapse' clause on a 'loop' construct}}
call();
}
#pragma acc loop collapse(force:2)
for(unsigned i = 0; i < 5; ++i) {
call();
for(unsigned j = 0; j < 5; ++j);
}
#pragma acc loop collapse(force:Two)
for(unsigned i = 0; i < 5; ++i) {
call();
for(unsigned j = 0; j < 5; ++j);
}
#pragma acc loop collapse(force:2)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j);
call();
}
#pragma acc loop collapse(force:Two)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j);
call();
}
#pragma acc loop collapse(Two)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
call();
}
}
#pragma acc loop collapse(Two)
for(unsigned i = 0; i < 5; ++i) {
{
{
for(unsigned j = 0; j < 5; ++j) {
call();
}
}
}
}
#pragma acc loop collapse(force:Two)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
call();
}
}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(Two)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j);
// expected-error@+1{{inner loops must be tightly nested inside a 'collapse' clause on a 'loop' construct}}
call();
}
#pragma acc loop collapse(2)
// expected-error@+2{{OpenACC 'loop' construct must have a terminating condition}}
// expected-note@-2{{'loop' construct is here}}
for(int i = 0;;++i)
// expected-error@+2{{OpenACC 'loop' construct must have a terminating condition}}
// expected-note@-5{{'loop' construct is here}}
for(int j = 0;;++j)
for(;;);
}
void intervening_without_force() {
intervening_without_force_templ<2>(); // expected-note{{in instantiation of function template specialization}}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i) {
// expected-error@+1{{inner loops must be tightly nested inside a 'collapse' clause on a 'loop' construct}}
call();
for(unsigned j = 0; j < 5; ++j);
}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j);
// expected-error@+1{{inner loops must be tightly nested inside a 'collapse' clause on a 'loop' construct}}
call();
}
// The below two are fine, as they use the 'force' tag.
#pragma acc loop collapse(force:2)
for(unsigned i = 0; i < 5; ++i) {
call();
for(unsigned j = 0; j < 5; ++j);
}
#pragma acc loop collapse(force:2)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j);
call();
}
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
call();
}
}
#pragma acc loop collapse(2)
for(unsigned i = 0; i < 5; ++i) {
{
{
for(unsigned j = 0; j < 5; ++j) {
call();
}
}
}
}
#pragma acc loop collapse(force:2)
for(unsigned i = 0; i < 5; ++i) {
for(unsigned j = 0; j < 5; ++j) {
call();
}
}
#pragma acc loop collapse(2)
// expected-error@+2{{OpenACC 'loop' construct must have a terminating condition}}
// expected-note@-2{{'loop' construct is here}}
for(int i = 0;;++i)
// expected-error@+2{{OpenACC 'loop' construct must have a terminating condition}}
// expected-note@-5{{'loop' construct is here}}
for(int j = 0;;++j)
for(;;);
}
template<unsigned N>
void allow_multiple_collapse_templ() {
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(N) device_type(*) collapse(N+1)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(N+1) device_type(*) collapse(N)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
}
void allow_multiple_collapse() {
allow_multiple_collapse_templ<2>(); // expected-note{{in instantiation}}
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(2) device_type(*) collapse(3)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+2{{'collapse' clause specifies a loop count greater than the number of available loops}}
// expected-note@+1{{active 'collapse' clause defined here}}
#pragma acc loop collapse(3) device_type(*) collapse(2)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
}
void no_dupes_since_last_device_type() {
// expected-error@+3{{OpenACC 'collapse' clause cannot appear more than once in a 'device_type' region on a 'loop' directive}}
// expected-note@+2{{previous 'collapse' clause is here}}
// expected-note@+1{{active 'device_type' clause here}}
#pragma acc loop collapse(1) device_type(*) collapse(1) collapse(2)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
#pragma acc loop collapse(1) device_type(*) collapse(1) device_type(nvidia) collapse(2)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// This one is ok, despite * being the 'all' value.
#pragma acc loop device_type(*) collapse(1) device_type(nvidia) collapse(2)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
#pragma acc loop device_type(nvidia) collapse(1) device_type(*) collapse(2)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+4{{OpenACC 'collapse' clause applies to 'device_type' '*', which conflicts with previous 'collapse' clause}}
// expected-note@+3{{active 'device_type' clause here}}
// expected-note@+2{{previous 'collapse' clause is here}}
// expected-note@+1{{which applies to 'device_type' clause here}}
#pragma acc loop device_type(*) collapse(1) device_type(*) collapse(2)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+4{{OpenACC 'collapse' clause applies to 'device_type' 'nvidia', which conflicts with previous 'collapse' clause}}
// expected-note@+3{{active 'device_type' clause here}}
// expected-note@+2{{previous 'collapse' clause is here}}
// expected-note@+1{{which applies to 'device_type' clause here}}
#pragma acc loop device_type(nviDia, radeon) collapse(1) device_type(nvidia) collapse(2)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
// expected-error@+4{{OpenACC 'collapse' clause applies to 'device_type' 'radeon', which conflicts with previous 'collapse' clause}}
// expected-note@+3{{active 'device_type' clause here}}
// expected-note@+2{{previous 'collapse' clause is here}}
// expected-note@+1{{which applies to 'device_type' clause here}}
#pragma acc loop device_type(radeon) collapse(1) device_type(nvidia, radeon) collapse(2)
for(unsigned i = 0; i < 5; ++i)
for(unsigned j = 0; j < 5; ++j);
int NotConstexpr;
// expected-error@+1 3{{OpenACC 'collapse' clause loop count must be a constant expression}}
#pragma acc loop collapse(NotConstexpr) device_type(radeon, nvidia) collapse(NotConstexpr) device_type(host) collapse(NotConstexpr)
for(unsigned j = 0; j < 5; ++j);
}
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