Cheri-research/snmalloc
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Update realloc(p,0) semantics. (#753)

Browse Source 
* Factor out small sizeclass check

* Update realloc(p,0) semantics

This commit changes the behaviour of realloc(p,0) to be free(p) if p!=nullptr, and malloc(0) if p== nullptr.
This commit is contained in:
Matthew Parkinson
2025-02-27 15:20:31 +00:00
committed by GitHub
parent 6622dc584e
commit 06df9dd9e1
3 changed files with 55 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/test/func/malloc/malloc.cc
View File

@@ -265,6 +265,9 @@ int main(int argc, char** argv)
test_calloc(0, size, SUCCESS, false);
}
// Check realloc(nullptr,0) behaves like malloc(1)
test_realloc(nullptr, 0, SUCCESS, false);
for (smallsizeclass_t sc = 0; sc < NUM_SMALL_SIZECLASSES; sc++)
{
const size_t size = sizeclass_to_size(sc);
@@ -277,6 +280,8 @@ int main(int argc, char** argv)
test_realloc(our_malloc(size), size2, SUCCESS, false);
test_realloc(our_malloc(size + 1), size2, SUCCESS, false);
}
// Check realloc(p,0), behaves like free(p), if p != nullptr
test_realloc(our_malloc(size), 0, SUCCESS, true);
}
for (smallsizeclass_t sc = 0; sc < (MAX_SMALL_SIZECLASS_BITS + 4); sc++)