diff options
Diffstat (limited to 'erts/emulator/beam/beam_debug.c')
| -rw-r--r-- | erts/emulator/beam/beam_debug.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c index c855c734d6..68559e3992 100644 --- a/erts/emulator/beam/beam_debug.c +++ b/erts/emulator/beam/beam_debug.c @@ -252,8 +252,8 @@ erts_debug_disassemble_1(BIF_ALIST_1) int i; if (term_to_UWord(addr, &uaddr)) { - BeamInstr *pc = (BeamInstr *) uaddr; - if ((cmfa = find_function_from_pc(pc)) == NULL) { + code_ptr = (BeamInstr *) uaddr; + if ((cmfa = find_function_from_pc(code_ptr)) == NULL) { BIF_RET(am_false); } } else if (is_tuple(addr)) { @@ -307,12 +307,11 @@ erts_debug_disassemble_1(BIF_ALIST_1) BIF_RET(am_undef); } } + code_ptr = erts_codemfa_to_code(cmfa); } else { goto error; } - - code_ptr = erts_codemfa_to_code(cmfa); dsbufp = erts_create_tmp_dsbuf(0); erts_print(ERTS_PRINT_DSBUF, (void *) dsbufp, HEXF ": ", code_ptr); instr = (BeamInstr) code_ptr[0]; @@ -335,7 +334,7 @@ erts_debug_disassemble_1(BIF_ALIST_1) hp = HAlloc(p, hsz); addr = erts_bld_uword(&hp, NULL, (BeamInstr) code_ptr); ASSERT(is_atom(cmfa->module) || is_nil(cmfa->module)); - ASSERT(is_atom(cmfa->function) || is_nil(cmfa->function == NIL)); + ASSERT(is_atom(cmfa->function) || is_nil(cmfa->function)); mfa = TUPLE3(hp, cmfa->module, cmfa->function, make_small(cmfa->arity)); hp += 4; @@ -550,7 +549,7 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr) case 'f': /* Destination label */ { ErtsCodeMFA* cmfa = find_function_from_pc((BeamInstr *)*ap); - if (erts_codemfa_to_code(cmfa) != (BeamInstr *) *ap) { + if (!cmfa || erts_codemfa_to_code(cmfa) != (BeamInstr *) *ap) { erts_print(to, to_arg, "f(" HEXF ")", *ap); } else { erts_print(to, to_arg, "%T:%T/%bpu", cmfa->module, @@ -562,7 +561,7 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr) case 'p': /* Pointer (to label) */ { ErtsCodeMFA* cmfa = find_function_from_pc((BeamInstr *)*ap); - if (erts_codemfa_to_code(cmfa) != (BeamInstr *) *ap) { + if (!cmfa || erts_codemfa_to_code(cmfa) != (BeamInstr *) *ap) { erts_print(to, to_arg, "p(" HEXF ")", *ap); } else { erts_print(to, to_arg, "%T:%T/%bpu", cmfa->module, |