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Restore MODE=dbg support

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We recently broke MODE=dbg support when we added C++ exception support.
This change adds the missing UBSAN interfaces, needed to get it working
again. Some of the ASAN checking in the SJLJ guts needed to be disabled
since I doubt anyone's combined the two features until now.
This commit is contained in:
Justine Tunney 2024-01-26 23:07:18 -08:00
parent f27808c4d2
commit c1e18e7903
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GPG key ID: BE714B4575D6E328
5 changed files with 34 additions and 38 deletions
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26
libc/intrin/ubsan.c
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@ -112,6 +112,13 @@ struct UbsanOverflowData {
struct UbsanTypeDescriptor *type;
};
struct UbsanDynamicTypeCacheMissData {
struct UbsanSourceLocation location;
struct UbsanTypeDescriptor *type;
void *TypeInfo;
unsigned char TypeCheckKind;
};
struct UbsanFloatCastOverflowData {
#if __GNUC__ + 0 >= 6
struct UbsanSourceLocation location;
@ -145,6 +152,8 @@ upcast of\0\
cast to virtual base of\0\
\0";
uintptr_t __ubsan_vptr_type_cache[128];
static int __ubsan_bits(struct UbsanTypeDescriptor *t) {
return 1 << (t->info >> 1);
}
@ -439,15 +448,22 @@ void __ubsan_handle_divrem_overflow_abort(
__ubsan_handle_divrem_overflow(loc);
}
static bool HandleDynamicTypeCacheMiss(
struct UbsanDynamicTypeCacheMissData *data, uintptr_t ptr, uintptr_t hash) {
return false; // TODO: implement me
}
void __ubsan_handle_dynamic_type_cache_miss(
const struct UbsanSourceLocation *loc) {
__ubsan_abort(loc, "dynamic type cache miss")();
__ubsan_unreachable();
struct UbsanDynamicTypeCacheMissData *data, uintptr_t ptr, uintptr_t hash) {
HandleDynamicTypeCacheMiss(data, ptr, hash);
}
void __ubsan_handle_dynamic_type_cache_miss_abort(
const struct UbsanSourceLocation *loc) {
__ubsan_handle_dynamic_type_cache_miss(loc);
struct UbsanDynamicTypeCacheMissData *data, uintptr_t ptr, uintptr_t hash) {
if (HandleDynamicTypeCacheMiss(data, ptr, hash)) {
__ubsan_abort(&data->location, "dynamic type cache miss")();
__ubsan_unreachable();
}
}
void __ubsan_handle_function_type_mismatch(