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| author | Sverker Eriksson <[email protected]> | 2017-02-14 18:26:31 +0100 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2017-02-14 18:26:31 +0100 |
| commit | 118de47d703e303aea7f4575849a37c11416ba14 (patch) | |
| tree | 211bbb6c24d6069c657d3b7ac7776be45631ec48 /erts/emulator/beam/erl_map.c | |
| parent | dd60ebfa1f2f6dc203deee59f95305291d06a619 (diff) | |
| download | otp-118de47d703e303aea7f4575849a37c11416ba14.tar.gz otp-118de47d703e303aea7f4575849a37c11416ba14.tar.bz2 otp-118de47d703e303aea7f4575849a37c11416ba14.zip | |
erts: Add deallocation veto for magic destructors
A magic destructor can return 0 and thereby take control
and prolong the lifetime of a magic binary.
Diffstat (limited to 'erts/emulator/beam/erl_map.c')
| -rw-r--r-- | erts/emulator/beam/erl_map.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/erts/emulator/beam/erl_map.c b/erts/emulator/beam/erl_map.c index 990be8efb2..9062e44b10 100644 --- a/erts/emulator/beam/erl_map.c +++ b/erts/emulator/beam/erl_map.c @@ -1188,12 +1188,13 @@ typedef struct HashmapMergeContext_ { #endif } HashmapMergeContext; -static void hashmap_merge_ctx_destructor(Binary* ctx_bin) +static int hashmap_merge_ctx_destructor(Binary* ctx_bin) { HashmapMergeContext* ctx = (HashmapMergeContext*) ERTS_MAGIC_BIN_DATA(ctx_bin); ASSERT(ERTS_MAGIC_BIN_DESTRUCTOR(ctx_bin) == hashmap_merge_ctx_destructor); PSTACK_DESTROY_SAVED(&ctx->pstack); + return 1; } BIF_RETTYPE maps_merge_trap_1(BIF_ALIST_1) { |