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| author | Sverker Eriksson <[email protected]> | 2016-12-20 18:31:32 +0100 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2016-12-20 18:31:32 +0100 |
| commit | 44138faf5c7047af63f49390282358de2e3c3b3d (patch) | |
| tree | 5e1d05920e01aca513a1701ced135ed6f847be0f /erts/emulator | |
| parent | a3b58a857a9d1a4d4bec051bf7814580e4254f02 (diff) | |
| parent | 420aa50e766560c3316a16695c8c3c1c46138aff (diff) | |
| download | otp-44138faf5c7047af63f49390282358de2e3c3b3d.tar.gz otp-44138faf5c7047af63f49390282358de2e3c3b3d.tar.bz2 otp-44138faf5c7047af63f49390282358de2e3c3b3d.zip | |
Merge branch 'maint'
Diffstat (limited to 'erts/emulator')
| -rw-r--r-- | erts/emulator/beam/erl_bif_info.c | 4 | ||||
| -rw-r--r-- | erts/emulator/test/process_SUITE.erl | 11 |
2 files changed, 13 insertions, 2 deletions
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c index 9a3b78ae8d..009d2b72d3 100644 --- a/erts/emulator/beam/erl_bif_info.c +++ b/erts/emulator/beam/erl_bif_info.c @@ -1673,11 +1673,11 @@ current_stacktrace(Process* p, Process* rp, Eterm** hpp) Eterm mfa; Eterm res = NIL; - depth = 8; + depth = erts_backtrace_depth; sz = offsetof(struct StackTrace, trace) + sizeof(BeamInstr *)*depth; s = (struct StackTrace *) erts_alloc(ERTS_ALC_T_TMP, sz); s->depth = 0; - if (rp->i) { + if (depth > 0 && rp->i) { s->trace[s->depth++] = rp->i; depth--; } diff --git a/erts/emulator/test/process_SUITE.erl b/erts/emulator/test/process_SUITE.erl index e035fc64fe..3b8f0072f2 100644 --- a/erts/emulator/test/process_SUITE.erl +++ b/erts/emulator/test/process_SUITE.erl @@ -437,11 +437,22 @@ t_process_info(Config) when is_list(Config) -> verify_loc(Line2, Res2), pi_stacktrace([{?MODULE,t_process_info,1,?LINE}]), + verify_stacktrace_depth(), + Gleader = group_leader(), {group_leader, Gleader} = process_info(self(), group_leader), {'EXIT',{badarg,_Info}} = (catch process_info('not_a_pid')), ok. +verify_stacktrace_depth() -> + CS = current_stacktrace, + OldDepth = erlang:system_flag(backtrace_depth, 0), + {CS,[]} = erlang:process_info(self(), CS), + _ = erlang:system_flag(backtrace_depth, 8), + {CS,[{?MODULE,verify_stacktrace_depth,0,_},_|_]} = + erlang:process_info(self(), CS), + _ = erlang:system_flag(backtrace_depth, OldDepth). + pi_stacktrace(Expected0) -> {Line,Res} = {?LINE,erlang:process_info(self(), current_stacktrace)}, {current_stacktrace,Stack} = Res, |