diff options
Diffstat (limited to 'erts')
| -rw-r--r-- | erts/doc/src/erlang.xml | 19 | ||||
| -rw-r--r-- | erts/doc/src/notes.xml | 21 | ||||
| -rw-r--r-- | erts/emulator/beam/beam_bif_load.c | 18 | ||||
| -rw-r--r-- | erts/vsn.mk | 2 |
4 files changed, 51 insertions, 9 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index 5afac46d21..2465f49581 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -432,6 +432,16 @@ Z = erlang:adler32_combine(X,Y,iolist_size(Data2)).</code> <seealso marker="#binary_to_atom/2"><c>binary_to_atom/2</c></seealso>, but the atom must exist.</p> <p>Failure: <c>badarg</c> if the atom does not exist.</p> + <note> + <p>Note that the compiler may optimize away atoms. For + example, the compiler will rewrite + <c>atom_to_list(some_atom)</c> to <c>"some_atom"</c>. If + that expression is the only mention of the atom + <c>some_atom</c> in the containing module, the atom will not + be created when the module is loaded, and a subsequent call + to <c>binary_to_existing_atom(<<"some_atom">>, utf8)</c> + will fail.</p> + </note> </desc> </func> @@ -2478,6 +2488,15 @@ os_prompt%</pre> but only if there already exists such atom.</p> <p>Failure: <c>badarg</c> if there does not already exist an atom whose text representation is <c><anno>String</anno></c>.</p> + <note> + <p>Note that the compiler may optimize away atoms. For + example, the compiler will rewrite + <c>atom_to_list(some_atom)</c> to <c>"some_atom"</c>. If + that expression is the only mention of the atom + <c>some_atom</c> in the containing module, the atom will not + be created when the module is loaded, and a subsequent call + to <c>list_to_existing_atom("some_atom")</c> will fail.</p> + </note> </desc> </func> diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml index f6bc6e984b..139057adb7 100644 --- a/erts/doc/src/notes.xml +++ b/erts/doc/src/notes.xml @@ -31,6 +31,27 @@ </header> <p>This document describes the changes made to the ERTS application.</p> +<section><title>Erts 9.0.5</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fixed bug in <c>binary_to_term</c> and + <c>binary_to_atom</c> that could cause VM crash. + Typically happens when the last character of an UTF8 + string is in the range 128 to 255, but truncated to only + one byte. Bug exists in <c>binary_to_term</c> since ERTS + version 5.10.2 (OTP_R16B01) and <c>binary_to_atom</c> + since ERTS version 9.0 (OTP-20.0).</p> + <p> + Own Id: OTP-14590 Aux Id: ERL-474 </p> + </item> + </list> + </section> + +</section> + <section><title>Erts 9.0.4</title> <section><title>Fixed Bugs and Malfunctions</title> diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c index 14ddb74324..023ee3ef4b 100644 --- a/erts/emulator/beam/beam_bif_load.c +++ b/erts/emulator/beam/beam_bif_load.c @@ -261,7 +261,7 @@ struct m { Binary* code; Eterm module; Module* modp; - Uint exception; + Eterm exception; }; static Eterm staging_epilogue(Process* c_p, int, Eterm res, int, struct m*, int, int); @@ -282,7 +282,7 @@ exception_list(Process* p, Eterm tag, struct m* mp, Sint exceptions) Eterm res = NIL; while (exceptions > 0) { - if (mp->exception) { + if (is_value(mp->exception)) { res = CONS(hp, mp->module, res); hp += 2; exceptions--; @@ -383,9 +383,9 @@ finish_loading_1(BIF_ALIST_1) exceptions = 0; for (i = 0; i < n; i++) { - p[i].exception = 0; + p[i].exception = THE_NON_VALUE; if (p[i].modp->seen) { - p[i].exception = 1; + p[i].exception = am_duplicated; exceptions++; } p[i].modp->seen = 1; @@ -419,9 +419,9 @@ finish_loading_1(BIF_ALIST_1) exceptions = 0; for (i = 0; i < n; i++) { - p[i].exception = 0; + p[i].exception = THE_NON_VALUE; if (p[i].modp->curr.code_hdr && p[i].modp->old.code_hdr) { - p[i].exception = 1; + p[i].exception = am_not_purged; exceptions++; } } @@ -442,7 +442,7 @@ finish_loading_1(BIF_ALIST_1) retval = erts_finish_loading(p[i].code, BIF_P, 0, &mod); ASSERT(retval == NIL || retval == am_on_load); if (retval == am_on_load) { - p[i].exception = 1; + p[i].exception = am_on_load; exceptions++; } } @@ -475,7 +475,8 @@ staging_epilogue(Process* c_p, int commit, Eterm res, int is_blocking, erts_commit_staging_code_ix(); for (i=0; i < nmods; i++) { - if (mods[i].modp->curr.code_hdr) { + if (mods[i].modp->curr.code_hdr + && mods[i].exception != am_on_load) { set_default_trace_pattern(mods[i].module); } #ifdef HIPE @@ -700,6 +701,7 @@ BIF_RETTYPE delete_module_1(BIF_ALIST_1) Eterm retval; mod.module = BIF_ARG_1; mod.modp = modp; + mod.exception = THE_NON_VALUE; retval = staging_epilogue(BIF_P, success, res, is_blocking, &mod, 1, 0); return retval; } diff --git a/erts/vsn.mk b/erts/vsn.mk index 8ed3993177..c231c9c27d 100644 --- a/erts/vsn.mk +++ b/erts/vsn.mk @@ -18,7 +18,7 @@ # %CopyrightEnd% # -VSN = 9.0.4 +VSN = 9.0.5 # Port number 4365 in 4.2 # Port number 4366 in 4.3 |