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Author SHA1 Message Date
Roberto Ierusalimschy
aaf3533653 Tricky _PROMPT may trigger undefined behavior in lua.c 2024-06-12 16:04:25 -03:00
Roberto Ierusalimschy
b529aefc53 Bug: luaL_traceback may need more than 5 stack slots 2024-06-12 16:02:01 -03:00
Roberto Ierusalimschy
d51022bf9e Bug: overlapping assignments 
ISO C forbids assignment of a union field to another field of the same
union.
 2024-06-12 15:56:13 -03:00
Roberto Ierusalimschy
bb7bb5944c More disciplined use of 'errno' 
Set errno to zero before calling any function where we may use its
errno, and check errno for zero before using it (as functions may not
set it even in error). The code assumes that no function will put
garbage on errno (although ISO C allows that): If any function during an
operation set errno, and the operation result in an error, assume that
errno has something to say.
 2024-06-12 15:50:31 -03:00
Roberto Ierusalimschy
94b503d95e Encoding of table indices (hres) must use C indices 
As the encoding of array indices is (~index), 0 is encoded as -1 and
INT_MAX is encoded as INT_MIN.
 2024-06-10 12:09:35 -03:00
Roberto Ierusalimschy
bdc85357aa Bug: Active-lines for stripped vararg functions 
Lua seg. faults when asked to create the 'activelines' table for a
vararg function with no debug information.
 2024-06-04 17:27:13 -03:00
Roberto Ierusalimschy
b291008cc2 Manual for 'string.format' lists what it accepts 
Instead of listing what it does not accept, which is always relative.
 2024-06-04 16:51:31 -03:00
Roberto Ierusalimschy
814213b65f utf8.offset returns also final position of character 
'utf8.offset' returns two values: the initial and the final position
of the given character.
 2024-05-27 11:29:39 -03:00
Roberto Ierusalimschy
cbdf4969ec Manual: errors in lua_toclose are not memory errors 2024-05-23 09:55:26 -03:00
Roberto Ierusalimschy
262dc5729a Details 
Corrections in comments and manual. Added note in the manual about
local variables in the REPL.
 2024-05-08 17:50:10 -03:00
Roberto Ierusalimschy
9d985db7bb New year (2024) 2024-05-02 12:03:30 -03:00
Roberto Ierusalimschy
0897c0a428 'getmode' renamed to 'getMode' 
The name 'getmode' conficts with a function from BSD, defined
in <unistd.h>. Although 'lbaselib.c' cannot include that header,
'onelua.c' can.
 2024-04-08 14:28:26 -03:00
Roberto Ierusalimschy
5edacafcfa Yet another representation for arrays 
This "linear" representation (see ltable.h for details) has worse
locality than cells, but the simpler access code seems to compensate
that.
 2024-04-05 15:35:11 -03:00
Roberto Ierusalimschy
3507c3380f Small simplification in 'findloader' 
Instead of allways adding a prefix for the next message, and then
removing it if there is no message, add the prefix after each message.
 2024-04-03 16:01:23 -03:00
Roberto Ierusalimschy
88a50ffa71 Fixed dangling 'StkId' in 'luaV_finishget' 
Bug introduced in 05932567.
 2024-03-29 15:10:50 -03:00
Roberto Ierusalimschy
86a8e74824 Details 2024-03-28 17:11:33 -03:00
Roberto Ierusalimschy
9fa63a6268 Some 'unsigned int' changed to 'unsigned' 
'unsigned int' is too long sometimes. (We already write 'long' instead
of 'long int'...)
 2024-03-22 14:06:11 -03:00
Roberto Ierusalimschy
0593256707 'luaH_get' functions return tag of the result 
Undoing previous commit. Returning TValue increases code size without
any visible gains. Returning the tag is a little simpler than returning
a special code (HOK/HNOTFOUND) and the tag is useful by itself in
some cases.
 2024-03-21 11:23:21 -03:00
Roberto Ierusalimschy
ce6f5502c9 'luaH_get' functions return 'TValue' 
Instead of receiving a parameter telling them where to put the result
of the query, these functions return the TValue directly. (That is,
they return a structure.)
 2024-03-18 15:56:32 -03:00
Roberto Ierusalimschy
ba71060381 Removed "bulk operations" 
Negligible performance gains don't justify extra complexity.
 2024-03-15 11:23:35 -03:00
Roberto Ierusalimschy
3823fc6c81 Added "bulk operations" to arrays 
A few operations on arrays can be performed "in bulk", treating all
tags of a cell as a simple (or a few) word(s).
 2024-03-15 11:01:34 -03:00
Roberto Ierusalimschy
52aa2b5d24 Details 
- 'unsigned int' -> 'unsigned'
- Some explicit casts to avoid warnings
- Test avoids printing the value of 'fail' (which may not be nil)
 2024-03-13 09:20:34 -03:00
Roberto Ierusalimschy
cc2b66c856 Removed type 'varint_t' 
size_t should be big enough to count the number of strings in a dump.
(And, by definition, it is big enough to count the length of each
string.)
 2024-03-13 09:16:51 -03:00
Roberto Ierusalimschy
65b07dd53d API asserts for illegal pops of to-be-closed variables 2024-03-11 14:05:06 -03:00
Roberto Ierusalimschy
7237eb3f1c Fixed warnings from different compilers 2024-02-15 11:18:34 -03:00
Roberto Ierusalimschy
165389b27b New interface to function 'luaL_openselectedlibs' 
Instead of preloading all non-loaded libraries, there is another
mask to select which libraries to preload.
 2024-02-15 11:17:39 -03:00
Roberto Ierusalimschy
c8121ce34b Revising code for Varint encoding in dumps 
- Usign lua_Unsigned to count strings.
- Varint uses a type large enough both for size_t and lua_Unsigned.
- Most-Significant Bit 0 means last byte, to conform to common usage.
- (unrelated) Change in macro 'getaddr' so that multiplication is
  by constants.
 2024-02-12 15:16:11 -03:00
Roberto Ierusalimschy
7360f8d0fd Removed deprecated function 'setcstacklimit' 2024-02-07 14:20:43 -03:00
Roberto Ierusalimschy
6063c47031 Field 'lastfree' changed (back) to 'Node *' 
Due to allignment, it is already using the space of a pointer, and
a pointer generates slightly simpler code.
 2024-02-07 13:56:39 -03:00
Roberto Ierusalimschy
0c9bec0d38 Better handling of size limit when resizing a table 
Avoid silent conversions from int to unsigned int when calling
'luaH_resize'; avoid silent conversions from lua_Integer to int in
'table.create'; MAXASIZE corrected for the new implementation of arrays;
'luaH_resize' checks explicitly whether new size respects MAXASIZE.
(Even constructors were bypassing that check.)
 2024-02-07 13:39:54 -03:00
Roberto Ierusalimschy
c31d6774ac Details 2024-01-29 14:29:24 -03:00
Roberto Ierusalimschy
108e0bdc84 Merge branch 'master' into nextversion 2024-01-25 13:52:52 -03:00
Roberto Ierusalimschy
b34a97a4af Small optimization in 'luaH_psetint' 
It is quite common to write to empty but existing cells in the array
part of a table, so 'luaH_psetint' checks for the common case that
the table doesn't have a newindex metamethod to complete the write.
 2024-01-25 13:44:49 -03:00
Roberto Ierusalimschy
3e9dbe143d New function 'table.create' 
Creates a table preallocating memory. (It just exports to Lua the API
function 'lua_createtable'.)
 2024-01-18 15:16:26 -03:00
Roberto Ierusalimschy
4a8e480864 New mechanism to query GC parameters 2024-01-16 17:02:55 -03:00
Roberto Ierusalimschy
17e0c29d9b Clear interface between references and predefines 
The reference system has a defined way to add initial values to the
table where it operates.
 2024-01-15 11:31:49 -03:00
Roberto Ierusalimschy
8eb0abc9db Removed uses of LUA_NUMTAGS 
That constant was already deprecated (see commit 6aabf4b15e).
 2024-01-13 18:10:50 -03:00
Roberto Ierusalimschy
d862da6d04 Optimizations for 'lua_rawgeti' and 'lua_rawseti' 
'lua_rawgeti' now uses "fast track"; 'lua_rawseti' still calls
'luaH_setint', but the latter was recoded to avoid extra overhead
when writing to the array part after 'alimit'.
 2024-01-12 15:50:51 -03:00
Roberto Ierusalimschy
e288c5a918 Bug: Yielding in a hook stops in the wrong instruction 
Yielding in a hook must decrease the program counter, because it already
counted an instruction that, in the end, was not executed. However,
that decrement should be done only when about to restart the thread.
Otherwise, inspecting the thread with the debug library shows it one
instruction behind of where it really is.
 2024-01-11 13:44:16 -03:00
Roberto Ierusalimschy
7827c40c49 A few more tweaks in the garbage collector 2024-01-10 14:45:58 -03:00
Roberto Ierusalimschy
e7af9cdf0b Fixed buffers reuse absolute line information 2023-12-27 17:42:00 -03:00
Roberto Ierusalimschy
12b6f610b0 Several tweaks in the garbage collector 
- back with step size in collectgarbage("step")
- adjustments in defaults for some GC parameters
- adjustments in 'luaO_codeparam'
 2023-12-27 12:09:11 -03:00
Roberto Ierusalimschy
e81f586001 Removed compatibility option LUA_COMPAT_GCPARAMS 
The meaning of different GC parameters changed, so there is point in
supporting old values for them. The new code simply ignores the
parameters when changing the GC mode, so the incompatibility is small.
 2023-12-22 14:57:43 -03:00
Roberto Ierusalimschy
e2cc179454 New option "setparms" for 'collectgarbage' 
The generational mode also uses the parameters for the incremental
mode in its major collections, so it should be easy to change those
parameters without having to change the GC mode.
 2023-12-22 14:48:07 -03:00
Roberto Ierusalimschy
5853c37a83 Bug: Buffer overflow in string concatenation 
Even if the string fits in size_t, the whole size of the TString object
can overflow when we add the header.
 2023-12-21 13:37:51 -03:00
Roberto Ierusalimschy
ad0ea7813b GC parameters encoded as floating-point bytes 
This encoding brings more precision and a larger range for these
parameters.
 2023-12-20 16:25:20 -03:00
Roberto Ierusalimschy
666e95a66d Option 0 for step multiplier makes GC non-incremental 2023-12-20 11:06:27 -03:00
Roberto Ierusalimschy
4eda1acafa Cleaner protocol between 'lua_dump' and writer function 
'lua_dump' signals to the writer function the end of a dump, so that
is has more freedom when using the stack.
 2023-12-14 11:41:57 -03:00
Roberto Ierusalimschy
ad73b33224 Check minor->major made at the end of a minor cycle 
It does not make sense to wait for another cycle to decide when much of
the information about creation of old objects is already available.
 2023-12-07 15:45:41 -03:00
Roberto Ierusalimschy
925fe8a0f2 First criteria for shifts minor<->major 2023-12-07 15:45:11 -03:00