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Author SHA1 Message Date
Roberto Ierusalimschy
0270c204c2 Simplification in handling of GC debt 
Each incremental step has always the same size (stepsize), and the
debt for next step also is always the same.
 2022-12-06 12:02:34 -03:00
Roberto Ierusalimschy
efc7c5d503 Merge branch 'master' into nextversion 2022-12-01 09:51:07 -03:00
Roberto Ierusalimschy
d324a0ccf9 Simpler control for major collections 2022-11-29 10:37:08 -03:00
Roberto Ierusalimschy
152b51955a Removed GC checks from function calls 
Function calls do not create new objects. (It may use memory with
stack reallocation, but now that is irrelevant to the GC.)
 2022-11-24 10:20:15 -03:00
Roberto Ierusalimschy
ec61be9a7e 'l_mem' renamed to 'l_obj' to count objects 2022-11-23 17:29:03 -03:00
Roberto Ierusalimschy
f356d5acdd First version of GC counting objects for control 
Still needs to review generational mode.
 2022-11-23 17:17:20 -03:00
Roberto Ierusalimschy
9a77f57edc Stop GC while building initial state 2022-11-23 14:17:28 -03:00
Roberto Ierusalimschy
be908a7d4d Removed unused field 'UpVal.tbc' 2022-11-08 10:15:10 -03:00
Roberto Ierusalimschy
76953316d1 Added a counter of the total number of existing objects 
It may simplify the control of the garbage collector.
 2022-11-03 16:37:13 -03:00
Roberto Ierusalimschy
3d2bd1359d Merge branch 'master' into nextversion 2022-11-01 17:17:21 -03:00
Roberto Ierusalimschy
9ede317c70 Threads are created like other objects 
Using a version of 'luaC_newobj' that allows offsets (extra space
before the object itself).
 2022-11-01 17:14:01 -03:00
Roberto Ierusalimschy
8047b2d03e Tables have a 'lastfree' information only when needed 
Only tables with some minimum number of entries in their hash part
have a 'lastfree' field, kept in a header before the node vector.
 2022-11-01 15:42:08 -03:00
Roberto Ierusalimschy
ee645472eb Stack reallocation done with a single realloc 
To avoid the need of both the old and the new stack addresses valid
at the same time, to correct the pointers to the stack, these pointers
are changed to offsets before the reallocation and then changed back
to pointers after the reallocation.
 2022-10-31 15:06:20 -03:00
Roberto Ierusalimschy
413a393e62 Stack indices changed to union's 
That will allow to change pointers to offsets while reallocating
the stack.
 2022-10-29 12:06:37 -03:00
Roberto Ierusalimschy
ba089bcb08 Details 
Added comments in the makefile about other useful '-fsanitize' options.
 2022-10-26 10:15:09 -03:00
Roberto Ierusalimschy
1e64c1391f Bug: stack overflow with nesting of coroutine.close 2022-10-25 16:44:06 -03:00
Roberto Ierusalimschy
b85816b9a8 Removed test function 'luaH_isdummy' 
It was not being used anywhere.
 2022-10-21 09:18:13 -03:00
Roberto Ierusalimschy
c954db3924 Option '-l g=mod' added to the manual 
Plus some other improvements in the manual.
 2022-10-19 16:30:39 -03:00
Roberto Ierusalimschy
14d2803e55 Details 
Some cast operations rewritten to use respective macros.
 2022-10-19 16:29:54 -03:00
Roberto Ierusalimschy
7f12bf40c4 Portability issue in a test for 'string.format' 2022-10-19 16:20:11 -03:00
Roberto Ierusalimschy
26be27459b Negation in constant folding of '>>' may overflow 2022-09-23 11:08:10 -03:00
Roberto Ierusalimschy
cfbe378f90 Small simplification in overflow check in 'getfield' 
Subtracting a small non-negative int from a non-negative int cannot
overflow, and adding a non-negative int to INT_MIN cannot overflow.
 2022-09-23 10:57:35 -03:00
Roberto Ierusalimschy
a1089b415a Bug: 'utf8.codes' accepts spurious continuation bytes 2022-09-23 10:41:16 -03:00
Roberto Ierusalimschy
f8c4c4fcf2 New test for table rehash 2022-09-16 17:05:22 -03:00
Roberto Ierusalimschy
71bc69c2af Note in the manual about using '...' as an expression 2022-09-08 17:21:02 -03:00
Roberto Ierusalimschy
cd56f222b7 Corrected error message in 'table.remove' 2022-09-07 12:21:46 -03:00
Roberto Ierusalimschy
69b77b6fde Changed the growth rate of string buffers 
The growth rate of string buffers was reduced from 2 to 1.5 (3/2).
As string buffers start larger (256~1024 bytes), they don't need to
grow that fast. Moreover, a lower rate allows multiplicative growth up
to larger sizes (3/2 of the maximum). (After that, the growth becomes
linear, which is mostly useless.)
 2022-09-06 10:58:55 -03:00
Roberto Ierusalimschy
997f11f543 Bug: 'break' may not properly close variable in a 'for' loop 
Function 'leaveblock' was generating "break" label before removing
variables from the closing block. If 'createlabel' created a 'close'
instruction (which it did when matching a goto/break that exited
the scope of an upvalue), that instruction would use the wrong level.
 2022-08-24 17:36:47 -03:00
Roberto Ierusalimschy
02060b7a37 Simpler handling of Byte Order Mark (BOM) 2022-08-23 16:08:53 -03:00
Roberto Ierusalimschy
a1f77a234a Bug: set correct pause when (re)entering gen. collection. 2022-08-23 16:06:23 -03:00
Roberto Ierusalimschy
c6cea857a4 Better documentation for 'multires' expressions 
Manual has a new section explaining multires expressions, lists of
expressions, and adjustments. This commit also corrects some comments
in the code.
 2022-08-19 14:10:18 -03:00
Roberto Ierusalimschy
d61b0c6028 More checks and documentation for uses of EXTRA_STACK 2022-05-26 15:14:54 -03:00
Roberto Ierusalimschy
196bb94d66 Bug: 'lua_settop' may use an invalid pointer to stack 2022-05-25 17:41:39 -03:00
Roberto Ierusalimschy
603b2c64ad 'luaV_concat' can use invalidated pointer to stack 
Bug introduced in commit 42d40581.
 2022-05-23 17:50:47 -03:00
Roberto Ierusalimschy
4a00f61276 'lua_checkstack' doesn't need to check stack overflow 
'luaD_growstack' already checks that. This commit also fixes an
internal bug in 'luaD_growstack': a large 'n' could cause an arithmetic
overflow when computing 'needed'.
 2022-05-23 10:38:03 -03:00
Roberto Ierusalimschy
42d40581dd Save stack space while handling errors 
Because error handling (luaG_errormsg) uses slots from EXTRA_STACK,
and some errors can recur (e.g., string overflow while creating an
error message in 'luaG_runerror', or a C-stack overflow before calling
the message handler), the code should use stack slots with parsimony.

This commit fixes the bug "Lua-stack overflow when C stack overflows
while handling an error".
 2022-05-20 13:14:33 -03:00
Roberto Ierusalimschy
e435aaabef Details (identation and typos) 2022-05-10 11:13:39 -03:00
Roberto Ierusalimschy
315639d3bb Factoring out common parts of 'codearith' and 'codebitwise' 2022-05-06 17:52:46 -03:00
Roberto Ierusalimschy
c764ca71a6 Bug: Wrong code generation in bitwise operations 2022-04-25 14:42:51 -03:00
Roberto Ierusalimschy
295cde9454 New release number (5.4.5) 2022-04-07 10:52:15 -03:00
Roberto Ierusalimschy
f3cfd5bf2b Details 
Comments + manual + identation + asserts about stack limits that were
not allowing the use of the full stack
 2022-04-01 13:55:44 -03:00
Roberto Ierusalimschy
8426d9b4d4 Avoid computing invalid addresses 
luaV_execute should compute 'ra' only when the instruction uses it.
Computing an illegal address is undefined behavior even if the address
is never dereferenced.
 2022-02-18 13:22:25 -03:00
Roberto Ierusalimschy
1f3c6f4534 Bug: Lua can generate wrong code when _ENV is <const> 2022-02-15 12:28:46 -03:00
Roberto Ierusalimschy
25b143dd34 Bug: lua.c assumes that argv has at least one element 2022-02-07 10:16:35 -03:00
Roberto Ierusalimschy
5d708c3f9c Explanation of borders in the manual 
The explanation includes the limit case of maxinteger being a border.
It also avoids the term "natural", which might include large floats
with natural values.
 2022-01-13 08:15:03 -03:00
Roberto Ierusalimschy
8dd2c912d2 Detail 
Warnings with clang when using long double for Lua floats.
 2022-01-03 09:12:17 -03:00
Roberto Ierusalimschy
05ac2409ee New year (2022) 2022-01-02 07:11:08 -03:00
Roberto Ierusalimschy
597a53bbc6 Bug: finalizer calling exit can corrupt finalization order 
'os.exit' can call lua_close again, separating new finalizers
created after all previous finalizers were already separated.
 2021-12-22 09:00:52 -03:00
Roberto Ierusalimschy
86ec152433 Details 
correction in macro for hard tests + type in comment
 2021-12-21 07:39:25 -03:00
Roberto Ierusalimschy
cf613cdc6f Bug: finalizers can be called with an invalid stack 
The call to 'checkstackGC' can run finalizers, which will find an
inconsistent CallInfo, as 'ci' is half updated at the point of call.
 2021-12-15 11:29:07 -03:00