delta/lua-github.git/testes/nextvar.lua, branch v5.4.4 github.com: lua/lua.git Avoid overflows when incrementing parameters in C 2021-09-22T16:10:39+00:00 Roberto Ierusalimschy roberto@inf.puc-rio.br 2021-09-22T16:10:39+00:00 deac067ed39a44c001599c0d15de09872496b2aa Any C function can receive maxinteger as an integer argument, and therefore cannot increment it without some care (e.g., doing unsigned arithmetic as the core does). 
Any C function can receive maxinteger as an integer argument, and
therefore cannot increment it without some care (e.g., doing unsigned
arithmetic as the core does).
Allow yields inside '__pairs' 2021-03-29T15:57:32+00:00 Roberto Ierusalimschy roberto@inf.puc-rio.br 2021-03-29T15:57:32+00:00 bf10593a3a912cd3cac69569c7474e687c0d0cd8 






Fixed bug of keys removed from tables vs 'next'
2020-10-14T18:46:58+00:00

Roberto Ierusalimschy
roberto@inf.puc-rio.br

2020-10-14T18:46:58+00:00

52c86797608f1bf927be5bab1e9b97b7d35bdf2c

Fixed the bug that a key removed from a table might not be found
again by 'next'. (This is needed to allow keys to be removed during a
traversal.) This bug was introduced in commit 73ec04fc.





Fixed the bug that a key removed from a table might not be found
again by 'next'. (This is needed to allow keys to be removed during a
traversal.) This bug was introduced in commit 73ec04fc.







Better tests for gray lists
2020-08-07T17:45:20+00:00

Roberto Ierusalimschy
roberto@inf.puc-rio.br

2020-08-07T17:45:20+00:00

f13dc59416afa8fc93bb3d784d1a73e49e1b5b09

Test uses an extra bit in 'marked' to mark all elements in gray lists
and then check against elements colored gray.





Test uses an extra bit in 'marked' to mark all elements in gray lists
and then check against elements colored gray.







Details
2020-02-27T15:59:22+00:00

Roberto Ierusalimschy
roberto@inf.puc-rio.br

2020-02-27T15:59:22+00:00

6eb53b752617fae9e1329bfe2cfecdcbb593c398

Several details in code (e.g., moving a variable to the most inner
scope that encloses its uses), comments, parameter names, extra tests.





Several details in code (e.g., moving a variable to the most inner
scope that encloses its uses), comments, parameter names, extra tests.







Small corrections when setting 'L->top'
2019-07-25T16:55:29+00:00

Roberto Ierusalimschy
roberto@inf.puc-rio.br

2019-07-25T16:55:29+00:00

9a37dc0ce64c51fd57f5e658a5af8f3671a26b0a

- OP_NEWTABLE can use 'ra + 1' to set top (instead of ci->top);
- OP_CLOSE doesn't need to set top ('Protect' already does that);
- OP_TFORCALL must use 'ProtectNT', to preserve the top already set.
  (That was a small bug, because iterators could be called with
   extra parameters besides the state and the control variable.)
- Comments and an extra test for the bug in previous item.





- OP_NEWTABLE can use 'ra + 1' to set top (instead of ci->top);
- OP_CLOSE doesn't need to set top ('Protect' already does that);
- OP_TFORCALL must use 'ProtectNT', to preserve the top already set.
  (That was a small bug, because iterators could be called with
   extra parameters besides the state and the control variable.)
- Comments and an extra test for the bug in previous item.







Unification of size representation in OP_NEWTABLE and OP_SETLIST
2019-07-15T17:59:35+00:00

Roberto Ierusalimschy
roberto@inf.puc-rio.br

2019-07-15T17:59:35+00:00

758c1ef445ab27d89bace746111add04083a8e20

Opcodes OP_NEWTABLE and OP_SETLIST use the same representation to
store the size of the array part of a table. This new representation
can go up to 2^33 (8 + 25 bits).





Opcodes OP_NEWTABLE and OP_SETLIST use the same representation to
store the size of the array part of a table. This new representation
can go up to 2^33 (8 + 25 bits).







OP_NEWTABLE keeps exact size of arrays
2019-07-12T19:13:50+00:00

Roberto Ierusalimschy
roberto@inf.puc-rio.br

2019-07-12T19:13:50+00:00

1fb4d539254b67e7e35ed698250c66d1edff0e08

OP_NEWTABLE is followed by an OP_EXTRAARG, so that it can keep
the exact size of the array part of the table to be created.
(Functions 'luaO_int2fb'/'luaO_fb2int' were removed.)





OP_NEWTABLE is followed by an OP_EXTRAARG, so that it can keep
the exact size of the array part of the table to be created.
(Functions 'luaO_int2fb'/'luaO_fb2int' were removed.)







Details in the implementation of the integer 'for' loop
2019-03-21T19:01:55+00:00

Roberto Ierusalimschy
roberto@inf.puc-rio.br

2019-03-21T19:01:55+00:00

682054920ddc434fd4a7f8cc78027dbb03f47f00

Changed some implementation details; in particular, it is back using
an internal variable to keep the index, with the control variable
being only a copy of that internal variable. (The direct use of
the control variable demands a check of its type for each access,
which offsets the gains from the use of a single variable.)





Changed some implementation details; in particular, it is back using
an internal variable to keep the index, with the control variable
being only a copy of that internal variable. (The direct use of
the control variable demands a check of its type for each access,
which offsets the gains from the use of a single variable.)







New semantics for the integer 'for' loop
2019-03-19T13:53:18+00:00

Roberto Ierusalimschy
roberto@inf.puc-rio.br

2019-03-19T13:53:18+00:00

9b37a4695ebf50b37b5b4fb279ae948f23b5b6a0

The numerical 'for' loop over integers now uses a precomputed counter
to control its number of iteractions. This change eliminates several
weird cases caused by overflows (wrap-around) in the control variable.
(It also ensures that every integer loop halts.)

Also, the special opcodes for the usual case of step==1 were removed.
(The new code is already somewhat complex for the usual case,
but efficient.)





The numerical 'for' loop over integers now uses a precomputed counter
to control its number of iteractions. This change eliminates several
weird cases caused by overflows (wrap-around) in the control variable.
(It also ensures that every integer loop halts.)

Also, the special opcodes for the usual case of step==1 were removed.
(The new code is already somewhat complex for the usual case,
but efficient.)