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| author | Erlang/OTP <[email protected]> | 2013-04-04 17:53:56 +0200 |
|---|---|---|
| committer | Erlang/OTP <[email protected]> | 2013-04-04 17:53:56 +0200 |
| commit | b3678dc3c0dbf0a3aa8c54e248e4579afa1d8c67 (patch) | |
| tree | 586bcfc4d4a6194f883c9339743abf79bd499554 /erts/emulator | |
| parent | d0e476746a4ce505bceab5a504a4c3e8fc06797a (diff) | |
| parent | 9b25088a6f1494d4ff6cd39653dba155d6639f5d (diff) | |
| download | otp-b3678dc3c0dbf0a3aa8c54e248e4579afa1d8c67.tar.gz otp-b3678dc3c0dbf0a3aa8c54e248e4579afa1d8c67.tar.bz2 otp-b3678dc3c0dbf0a3aa8c54e248e4579afa1d8c67.zip | |
Merge branch 'egil/r16/fix-delete_element/OTP-10932' into maint-r16
* egil/r16/fix-delete_element/OTP-10932:
erts: Refactor erlang:insert_element/3 for clarity
erts: Fix copy error in erlang:delete_element/2
Diffstat (limited to 'erts/emulator')
| -rw-r--r-- | erts/emulator/beam/bif.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c index 9c438679ea..ff237b6a78 100644 --- a/erts/emulator/beam/bif.c +++ b/erts/emulator/beam/bif.c @@ -2543,7 +2543,7 @@ BIF_RETTYPE insert_element_3(BIF_ALIST_3) Eterm* hp; Uint arity; Eterm res; - Sint ix; + Sint ix, c1, c2; if (is_not_tuple(BIF_ARG_2) || is_not_small(BIF_ARG_1)) { BIF_ERROR(BIF_P, BADARG); @@ -2561,14 +2561,12 @@ BIF_RETTYPE insert_element_3(BIF_ALIST_3) res = make_tuple(hp); *hp = make_arityval(arity + 1); - ix--; - arity -= ix; - - while (ix--) { *++hp = *++ptr; } + c1 = ix - 1; + c2 = arity - ix + 1; + while (c1--) { *++hp = *++ptr; } *++hp = BIF_ARG_3; - - while(arity--) { *++hp = *++ptr; } + while (c2--) { *++hp = *++ptr; } BIF_RET(res); } @@ -2579,7 +2577,7 @@ BIF_RETTYPE delete_element_2(BIF_ALIST_3) Eterm* hp; Uint arity; Eterm res; - Sint ix; + Sint ix, c1, c2; if (is_not_tuple(BIF_ARG_2) || is_not_small(BIF_ARG_1)) { BIF_ERROR(BIF_P, BADARG); @@ -2597,14 +2595,12 @@ BIF_RETTYPE delete_element_2(BIF_ALIST_3) res = make_tuple(hp); *hp = make_arityval(arity - 1); - ix--; - arity -= ix; - - while (ix--) { *++hp = *++ptr; } + c1 = ix - 1; + c2 = arity - ix; + while (c1--) { *++hp = *++ptr; } ++ptr; - - while(arity--) { *++hp = *++ptr; } + while (c2--) { *++hp = *++ptr; } BIF_RET(res); } |