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RedBear-OS/local/recipes/dev/libclc/source/clang/test/Parser/pragma-loop.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 -std=c++11 -verify %s
// Note that this puts the expected lines before the directives to work around
// limitations in the -verify mode.
template <int V, int I>
void test_nontype_template_param(int *List, int Length) {
#pragma clang loop vectorize_width(V) interleave_count(I)
for (int i = 0; i < Length; i++) {
List[i] = i;
}
#pragma clang loop vectorize_width(V + 4) interleave_count(I + 4)
for (int i = 0; i < Length; i++) {
List[i] = i;
}
}
template <int V>
void test_nontype_template_vectorize(int *List, int Length) {
/* expected-error {{invalid value '-1'; must be positive}} */ #pragma clang loop vectorize_width(V)
for (int i = 0; i < Length; i++) {
List[i] = i;
}
/* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop vectorize_width(V / 2)
for (int i = 0; i < Length; i++) {
List[i] += i;
}
}
template <int I>
void test_nontype_template_interleave(int *List, int Length) {
/* expected-error {{invalid value '-1'; must be positive}} */ #pragma clang loop interleave_count(I)
for (int i = 0; i < Length; i++) {
List[i] = i;
}
/* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop interleave_count(2 % I)
for (int i = 0; i < Length; i++) {
List[i] = i;
}
}
template <char V>
void test_nontype_template_char(int *List, int Length) {
/* expected-error {{invalid argument of type 'char'; expected an integer type}} */ #pragma clang loop vectorize_width(V)
for (int i = 0; i < Length; i++) {
List[i] = i;
}
}
template <bool V>
void test_nontype_template_bool(int *List, int Length) {
/* expected-error {{invalid argument of type 'bool'; expected an integer type}} */ #pragma clang loop vectorize_width(V)
for (int i = 0; i < Length; i++) {
List[i] = i;
}
}
template <int V, int I>
void test_nontype_template_badarg(int *List, int Length) {
/* expected-error {{use of undeclared identifier 'Vec'}} */ #pragma clang loop vectorize_width(Vec) interleave_count(I) /*
expected-note {{vectorize_width loop hint malformed; use vectorize_width(X, fixed) or vectorize_width(X, scalable) where X is an integer, or vectorize_width('fixed' or 'scalable')}} */
/* expected-error {{use of undeclared identifier 'Int'}} */ #pragma clang loop vectorize_width(V) interleave_count(Int)
for (int i = 0; i < Length; i++) {
List[i] = i;
}
}
template <typename T>
void test_type_template_vectorize(int *List, int Length) {
const T Value = -1;
/* expected-error {{invalid value '-1'; must be positive}} */ #pragma clang loop vectorize_width(Value)
for (int i = 0; i < Length; i++) {
List[i] = i;
}
/* expected-error {{invalid value '-1'; must be positive}} */ #pragma clang loop vectorize_width(Value, fixed)
for (int i = 0; i < Length; i++) {
List[i] = i;
}
}
void test(int *List, int Length) { // expected-note {{declared here}}
int i = 0;
#pragma clang loop vectorize(enable)
#pragma clang loop interleave(enable)
#pragma clang loop vectorize_predicate(enable)
#pragma clang loop unroll(full)
while (i + 1 < Length) {
List[i] = i;
}
#pragma clang loop vectorize_width(4)
#pragma clang loop interleave_count(8)
#pragma clang loop unroll_count(16)
while (i < Length) {
List[i] = i;
}
#pragma clang loop vectorize(disable)
#pragma clang loop interleave(disable)
#pragma clang loop vectorize_predicate(disable)
#pragma clang loop unroll(disable)
while (i - 1 < Length) {
List[i] = i;
}
#pragma clang loop vectorize_width(4) interleave_count(8) unroll_count(16)
while (i - 2 < Length) {
List[i] = i;
}
#pragma clang loop interleave_count(16)
while (i - 3 < Length) {
List[i] = i;
}
int VList[Length]; // expected-warning {{variable length arrays in C++ are a Clang extension}} \
expected-note {{function parameter 'Length' with unknown value cannot be used in a constant expression}}
#pragma clang loop vectorize(disable) interleave(disable) unroll(disable) vectorize_predicate(disable)
for (int j : VList) {
VList[j] = List[j];
}
#pragma clang loop distribute(enable)
for (int j : VList) {
VList[j] = List[j];
}
#pragma clang loop distribute(disable)
for (int j : VList) {
VList[j] = List[j];
}
test_nontype_template_param<4, 8>(List, Length);
/* expected-error {{expected '('}} */ #pragma clang loop vectorize
/* expected-error {{expected '('}} */ #pragma clang loop interleave
/* expected-error {{expected '('}} */ #pragma clang loop vectorize_predicate
/* expected-error {{expected '('}} */ #pragma clang loop unroll
/* expected-error {{expected '('}} */ #pragma clang loop distribute
/* expected-error {{expected ')'}} */ #pragma clang loop vectorize(enable
/* expected-error {{expected ')'}} */ #pragma clang loop interleave(enable
/* expected-error {{expected ')'}} */ #pragma clang loop vectorize_predicate(enable
/* expected-error {{expected ')'}} */ #pragma clang loop unroll(full
/* expected-error {{expected ')'}} */ #pragma clang loop distribute(enable
/* expected-error {{expected ')'}} */ #pragma clang loop vectorize_width(4
/* expected-error {{expected ')'}} */ #pragma clang loop interleave_count(4
/* expected-error {{expected ')'}} */ #pragma clang loop unroll_count(4
/* expected-error {{missing argument; expected 'enable', 'assume_safety' or 'disable'}} */ #pragma clang loop vectorize()
/* expected-error {{missing argument; expected an integer value}} */ #pragma clang loop interleave_count()
/* expected-error {{missing argument; expected 'enable', 'full' or 'disable'}} */ #pragma clang loop unroll()
/* expected-error {{missing argument; expected 'enable' or 'disable'}} */ #pragma clang loop distribute()
/* expected-error {{missing option; expected vectorize, vectorize_width, interleave, interleave_count, unroll, unroll_count, pipeline, pipeline_initiation_interval, vectorize_predicate, or distribute}} */ #pragma clang loop
/* expected-error {{invalid option 'badkeyword'}} */ #pragma clang loop badkeyword
/* expected-error {{invalid option 'badkeyword'}} */ #pragma clang loop badkeyword(enable)
/* expected-error {{invalid option 'badkeyword'}} */ #pragma clang loop vectorize(enable) badkeyword(4)
/* expected-warning {{extra tokens at end of '#pragma clang loop'}} */ #pragma clang loop vectorize(enable) ,
while (i-4 < Length) {
List[i] = i;
}
/* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop vectorize_width(0)
/* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop interleave_count(0)
/* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop unroll_count(0)
/* expected-error {{expression is not an integral constant expression}} expected-note {{division by zero}} */ #pragma clang loop vectorize_width(10 / 0)
/* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop interleave_count(10 / 5 - 2)
while (i-5 < Length) {
List[i] = i;
}
test_nontype_template_vectorize<4>(List, Length);
/* expected-note {{in instantiation of function template specialization}} */ test_nontype_template_vectorize<-1>(List, Length);
test_nontype_template_interleave<8>(List, Length);
/* expected-note {{in instantiation of function template specialization}} */ test_nontype_template_interleave<-1>(List, Length);
/* expected-note {{in instantiation of function template specialization}} */ test_nontype_template_char<'A'>(List, Length); // Loop hint arg cannot be a char.
/* expected-note {{in instantiation of function template specialization}} */ test_nontype_template_bool<true>(List, Length); // Or a bool.
/* expected-note {{in instantiation of function template specialization}} */ test_type_template_vectorize<int>(List, Length); // Or a template type.
/* expected-error {{value '3000000000' is too large}} */ #pragma clang loop vectorize_width(3000000000)
/* expected-error {{value '3000000000' is too large}} */ #pragma clang loop interleave_count(3000000000)
/* expected-error {{value '3000000000' is too large}} */ #pragma clang loop unroll_count(3000000000)
while (i-6 < Length) {
List[i] = i;
}
/* expected-warning {{extra tokens at end of '#pragma clang loop'}} */ #pragma clang loop vectorize_width(1 +) 1
/* expected-warning {{extra tokens at end of '#pragma clang loop'}} */ #pragma clang loop vectorize_width(1) +1
const int VV = 4;
/* expected-error {{expected expression}} */ #pragma clang loop vectorize_width(VV +/ 2) /*
expected-note {{vectorize_width loop hint malformed; use vectorize_width(X, fixed) or vectorize_width(X, scalable) where X is an integer, or vectorize_width('fixed' or 'scalable')}} */
/* expected-error {{use of undeclared identifier 'undefined'}} */ #pragma clang loop vectorize_width(VV+undefined) /*
expected-note {{vectorize_width loop hint malformed; use vectorize_width(X, fixed) or vectorize_width(X, scalable) where X is an integer, or vectorize_width('fixed' or 'scalable')}} */
/* expected-error {{expected ')'}} */ #pragma clang loop vectorize_width(1+(^*/2 * ()
/* expected-warning {{extra tokens at end of '#pragma clang loop' - ignored}} */ #pragma clang loop vectorize_width(1+(-0[0]))))))
/* expected-error {{use of undeclared identifier 'badvalue'}} */ #pragma clang loop vectorize_width(badvalue) /*
expected-note {{vectorize_width loop hint malformed; use vectorize_width(X, fixed) or vectorize_width(X, scalable) where X is an integer, or vectorize_width('fixed' or 'scalable')}} */
/* expected-error {{use of undeclared identifier 'badvalue'}} */ #pragma clang loop interleave_count(badvalue)
/* expected-error {{use of undeclared identifier 'badvalue'}} */ #pragma clang loop unroll_count(badvalue)
while (i-6 < Length) {
List[i] = i;
}
/* expected-error {{invalid argument; expected 'enable', 'assume_safety' or 'disable'}} */ #pragma clang loop vectorize(badidentifier)
/* expected-error {{invalid argument; expected 'enable', 'assume_safety' or 'disable'}} */ #pragma clang loop interleave(badidentifier)
/* expected-error {{invalid argument; expected 'enable', 'full' or 'disable'}} */ #pragma clang loop unroll(badidentifier)
/* expected-error {{invalid argument; expected 'enable' or 'disable'}} */ #pragma clang loop distribute(badidentifier)
while (i-7 < Length) {
List[i] = i;
}
// PR20069 - Loop pragma arguments that are not identifiers or numeric
// constants crash FE.
/* expected-error {{expected ')'}} */ #pragma clang loop vectorize(()
/* expected-error {{invalid argument; expected 'enable', 'assume_safety' or 'disable'}} */ #pragma clang loop interleave(*)
/* expected-error {{invalid argument; expected 'enable', 'full' or 'disable'}} */ #pragma clang loop unroll(=)
/* expected-error {{invalid argument; expected 'enable' or 'disable'}} */ #pragma clang loop distribute(+)
/* expected-error {{type name requires a specifier or qualifier}} expected-error {{expected expression}} */ #pragma clang loop vectorize_width(^) /* expected-note {{vectorize_width loop hint malformed; use vectorize_width(X, fixed) or vectorize_width(X, scalable) where X is an integer, or vectorize_width('fixed' or 'scalable')}} */
/* expected-error {{expected expression}} expected-error {{expected expression}} */ #pragma clang loop interleave_count(/)
/* expected-error {{expected expression}} expected-error {{expected expression}} */ #pragma clang loop unroll_count(==)
while (i-8 < Length) {
List[i] = i;
}
#pragma clang loop vectorize(enable)
/* expected-error {{expected a for, while, or do-while loop to follow '#pragma clang loop'}} */ int j = Length;
List[0] = List[1];
while (j-1 < Length) {
List[j] = j;
}
// FIXME: A bug in ParsedAttributes causes the order of the attributes to be
// processed in reverse. Consequently, the errors occur on the first of pragma
// of the next three tests rather than the last, and the order of the kinds
// is also reversed.
#pragma clang loop vectorize_width(4)
/* expected-error {{incompatible directives 'vectorize(disable)' and 'vectorize_width(4)'}} */ #pragma clang loop vectorize(disable)
#pragma clang loop interleave_count(4)
/* expected-error {{incompatible directives 'interleave(disable)' and 'interleave_count(4)'}} */ #pragma clang loop interleave(disable)
#pragma clang loop unroll_count(4)
/* expected-error {{incompatible directives 'unroll(disable)' and 'unroll_count(4)'}} */ #pragma clang loop unroll(disable)
while (i-8 < Length) {
List[i] = i;
}
#pragma clang loop vectorize(enable)
/* expected-error {{duplicate directives 'vectorize(enable)' and 'vectorize(disable)'}} */ #pragma clang loop vectorize(disable)
#pragma clang loop interleave(enable)
/* expected-error {{duplicate directives 'interleave(enable)' and 'interleave(disable)'}} */ #pragma clang loop interleave(disable)
#pragma clang loop vectorize_predicate(enable)
/* expected-error@+1 {{duplicate directives 'vectorize_predicate(enable)' and 'vectorize_predicate(disable)'}} */
#pragma clang loop vectorize_predicate(disable)
#pragma clang loop unroll(full)
/* expected-error {{duplicate directives 'unroll(full)' and 'unroll(disable)'}} */ #pragma clang loop unroll(disable)
#pragma clang loop distribute(enable)
/* expected-error {{duplicate directives 'distribute(enable)' and 'distribute(disable)'}} */ #pragma clang loop distribute(disable)
while (i-9 < Length) {
List[i] = i;
}
#pragma clang loop vectorize(disable)
/* expected-error {{incompatible directives 'vectorize(disable)' and 'vectorize_width(4)'}} */ #pragma clang loop vectorize_width(4)
#pragma clang loop interleave(disable)
/* expected-error {{incompatible directives 'interleave(disable)' and 'interleave_count(4)'}} */ #pragma clang loop interleave_count(4)
#pragma clang loop unroll(disable)
/* expected-error {{incompatible directives 'unroll(disable)' and 'unroll_count(4)'}} */ #pragma clang loop unroll_count(4)
while (i-10 < Length) {
List[i] = i;
}
#pragma clang loop vectorize_width(8)
/* expected-error {{duplicate directives 'vectorize_width(8)' and 'vectorize_width(4)'}} */ #pragma clang loop vectorize_width(4)
#pragma clang loop interleave_count(8)
/* expected-error {{duplicate directives 'interleave_count(8)' and 'interleave_count(4)'}} */ #pragma clang loop interleave_count(4)
#pragma clang loop unroll_count(8)
/* expected-error {{duplicate directives 'unroll_count(8)' and 'unroll_count(4)'}} */ #pragma clang loop unroll_count(4)
while (i-11 < Length) {
List[i] = i;
}
#pragma clang loop unroll(full)
/* expected-error {{incompatible directives 'unroll(full)' and 'unroll_count(4)'}} */ #pragma clang loop unroll_count(4)
while (i-11 < Length) {
List[i] = i;
}
#pragma clang loop interleave(enable)
/* expected-error {{expected statement}} */ }
void foo(void) {
#pragma clang loop vectorize_predicate(enable)
/* expected-error {{expected statement}} */ }
void foo(int *List, int Length) {
int i;
#pragma clang loop vectorize(enable, extra)
/* expected-warning {{extra tokens at end of '#pragma clang loop vectorize' - ignored}}*/ while (i-6 < Length) {
List[i] = i;
}
#pragma clang loop interleave(enable, extra)
/* expected-warning {{extra tokens at end of '#pragma clang loop interleave' - ignored}}*/ while (i-6 < Length) {
List[i] = i;
}
#pragma clang loop unroll(enable, extra)
/* expected-warning {{extra tokens at end of '#pragma clang loop unroll' - ignored}}*/ while (i-6 < Length) {
List[i] = i;
}
#pragma clang loop vectorize_predicate(enable, extra)
/* expected-warning {{extra tokens at end of '#pragma clang loop vectorize_predicate' - ignored}}*/ while (i-6 < Length) {
List[i] = i;
}
#pragma clang loop pipeline(disable, extra)
/* expected-warning {{extra tokens at end of '#pragma clang loop pipeline' - ignored}}*/ while (i-6 < Length) {
List[i] = i;
}
/* expected-warning {{extra tokens at end of '#pragma clang loop vectorize_width' - ignored}}*/ #pragma clang loop vectorize_width(2, scalable, extra)
/* expected-warning {{extra tokens at end of '#pragma clang loop interleave_count' - ignored}}*/ #pragma clang loop interleave_count(2, extra)
/* expected-warning {{extra tokens at end of '#pragma clang loop unroll_count' - ignored}}*/ #pragma clang loop unroll_count(2, extra)
/* expected-warning {{extra tokens at end of '#pragma clang loop pipeline_initiation_interval' - ignored}}*/ #pragma clang loop pipeline_initiation_interval(2, extra)
while (i-6 < Length) {
List[i] = i;
}
}
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