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comments and improved error message on buffer overflow

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This commit is contained in:
daan 2020-04-06 13:30:17 -07:00
parent 19cae48556
commit a38abae0a1
4 changed files with 28 additions and 16 deletions
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15
include/mimalloc-internal.h
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@ -755,9 +755,13 @@ static inline uintptr_t _mi_thread_id(void) mi_attr_noexcept {
// The base version declares the source parameter as MI_SOURCE_XPARAM and can pass it through as MI_SOURCE_XARG
//
// The big preprocessor macros that follow emit the 5 declarations with default
// implementations for the first 4 versions so only the 5th needs to be implemented.
// implementations for the first 4 versions so only the 5th (base version) needs to be implemented.
//
// For example, we write:
// > MI_ALLOC_API1(inline mi_decl_restrict void*, malloc_small, mi_heap_t*, heap, size_t, size) { ... }
// to implement `malloc_small` where we can use `MI_SOURCE_XARG` to pass on the possible source argument.
// -------------------------------------------------------------------------------------------------------------
#define MI_DEBUG_ONLY(x) x // we still allow dbg entry points in release mode to enable linking with a release build
#define MI_DEBUG_ONLY(x) x // we still emit dbg entry points in release mode to enable linking with a release build
#define MI_ALLOC_API1(tp,name,tp0,arg0,tp1,arg1) \
static tp mi_base_##name(tp0 arg0, tp1 arg1 MI_SOURCE_XPARAM) mi_attr_noexcept; \
@ -800,6 +804,9 @@ static inline uintptr_t _mi_thread_id(void) mi_attr_noexcept {
static tp mi_base_##name(tp0 arg0, tp1 arg1, tp2 arg2, tp3 arg3, tp4 arg4, tp5 arg5 MI_SOURCE_XPARAM) mi_attr_noexcept
// MI_NEW_API
// These are for C++ `new` entry points that don't need entries with an explicit heap parameter (and can raise exceptions)
#define MI_NEW_API1(tp,name,tp1,arg1) \
static tp mi_base_##name(tp1 arg1 MI_SOURCE_XPARAM); \
tp mi_##name(tp1 arg1) { return mi_base_##name(arg1 MI_SOURCE_XRET()); } \
@ -818,7 +825,9 @@ static inline uintptr_t _mi_thread_id(void) mi_attr_noexcept {
MI_DEBUG_ONLY(tp dbg_mi_##name(tp1 arg1, tp2 arg2, tp3 arg3, mi_source_t __mi_source) { (void)__mi_source; return mi_base_##name(arg1, arg2, arg3 MI_SOURCE_XARG); }) \
static tp mi_base_##name(tp1 arg1, tp2 arg2, tp3 arg3 MI_SOURCE_XPARAM)
// MI_SOURCE_API
// These are for C API entry points that don't need entries with an explicit heap parameter (like `aligned_alloc`)
// These are marked as noexcept.
#define MI_SOURCE_API1(tp,name,tp1,arg1) \
static tp mi_base_##name(tp1 arg1 MI_SOURCE_XPARAM); \