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[libc] Add aligned_alloc and delete[] to hermetic tests (#210693)

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This lets us run (at least) <search.h> tests in hermetic mode.
This commit is contained in:
Pavel Labath 2026-07-28 08:57:05 +02:00 committed by GitHub
parent b59d69d79e
commit ce62aab97e
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GPG key ID: B5690EEEBB952194
2 changed files with 13 additions and 8 deletions
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11
libc/test/UnitTest/HermeticTestUtils.cpp
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@ -70,14 +70,17 @@ void *memset(void *ptr, int value, size_t count) {
// This is needed if the test was compiled with '-fno-use-cxa-atexit'.
int atexit(void (*func)(void)) { return LIBC_NAMESPACE::atexit(func); }
void *malloc(size_t s) {
// Keep the bump pointer aligned on an eight byte boundary.
s = ((s + ALIGNMENT - 1) / ALIGNMENT) * ALIGNMENT;
void *aligned_alloc(size_t align, size_t s) {
if (align & (align - 1)) // Must be power of 2
return nullptr;
s = ((s + align - 1) / align) * align;
void *mem = ptr;
ptr += s;
return static_cast<uint64_t>(ptr - memory) >= MEMORY_SIZE ? nullptr : mem;
}
void *malloc(size_t s) { return aligned_alloc(ALIGNMENT, s); }
void free(void *) {}
void *realloc(void *mem, size_t s) {
@ -126,6 +129,8 @@ void *operator new[](size_t size) { return malloc(size); }
void operator delete(void *ptr) { free(ptr); }
void operator delete[](void *ptr) { free(ptr); }
void operator delete(void *ptr, size_t) { free(ptr); }
// Defining members in the std namespace is not preferred. But, we do it here

10
libc/test/src/search/CMakeLists.txt
View file

@ -1,5 +1,5 @@
add_custom_target(libc_search_unittests)
add_libc_unittest(
add_libc_test(
hsearch_test
SUITE
libc_search_unittests
@ -15,7 +15,7 @@ add_libc_unittest(
libc.src.errno.errno
)
add_libc_unittest(
add_libc_test(
insque_test
SUITE
libc_search_unittests
@ -26,7 +26,7 @@ add_libc_unittest(
libc.src.search.remque
)
add_libc_unittest(
add_libc_test(
lfind_test
SUITE
libc_search_unittests
@ -36,7 +36,7 @@ add_libc_unittest(
libc.src.search.lfind
)
add_libc_unittest(
add_libc_test(
lsearch_test
SUITE
libc_search_unittests
@ -46,7 +46,7 @@ add_libc_unittest(
libc.src.search.lsearch
)
add_libc_unittest(
add_libc_test(
tsearch_test
SUITE
libc_search_unittests