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Welcome to lua-l, a list for discussing the Lua programming language, its uses, and its implementation. For further information, visit this page .

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Sergey Bronnikov, Sainan3

3:23 AM

An assertion is triggered in luaG_errormsg

Yeah, I remember. I've just reported an issue found by fuzzing. I don't claim it is bug. On

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An assertion is triggered in luaG_errormsg

Yeah, I remember. I've just reported an issue found by fuzzing. I don't claim it is bug. On

3:23 AM

Sewbacca, … bil til15

Nov 4

Persistence of threads

Using Lua 5.5 should in any way bring quite a bit of RAM savings, if you know how to compile your

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Persistence of threads

Using Lua 5.5 should in any way bring quite a bit of RAM savings, if you know how to compile your

Nov 4

Thijs Schreijer, … Luiz Henrique de Figueiredo8

Nov 3

optimizing away a constant no-op function

> Would be nice to have this optimized. If you can use a preprocessor then it should be simple to

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optimizing away a constant no-op function

> Would be nice to have this optimized. If you can use a preprocessor then it should be simple to

Nov 3

bil til, … Thijs Schreijer14

Nov 3

Enforce function use in a Lua source file

On Sun, 2 Nov 2025, at 03:46, Xavier Wang wrote: > If you familiar the “Parsing, not validating”[1

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Enforce function use in a Lua source file

On Sun, 2 Nov 2025, at 03:46, Xavier Wang wrote: > If you familiar the “Parsing, not validating”[1

Nov 3

bil til, … Gé Weijers9

Nov 1

Lists of userdata in C code possible?

>when you traverse the list and find an object that meets your criteria you can't pass it to

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Lists of userdata in C code possible?

>when you traverse the list and find an object that meets your criteria you can't pass it to

Nov 1

Sainan, … Sean Conner17

Oct 31

Suggestion: math.ule

It was thus said that the Great 'Sainan' via lua-l once stated: > Huh, that's

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Suggestion: math.ule

It was thus said that the Great 'Sainan' via lua-l once stated: > Huh, that's

Oct 31

Vinay Sajip, … Thijs Schreijer5

Oct 31

Uninitialized data in Lua?

> Maybe a bit of narrowing down about what exactly is failing would help provide an explanation?

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Uninitialized data in Lua?

> Maybe a bit of narrowing down about what exactly is failing would help provide an explanation?

Oct 31

重归混沌, … Sainan4

Oct 30

Question about __gc ordering and cross-reference safety

> This does not apply only to "atexit GC". Hmm, now I wonder why I could not reproduce

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Question about __gc ordering and cross-reference safety

> This does not apply only to "atexit GC". Hmm, now I wonder why I could not reproduce

Oct 30

Stefano Cossu, Luther Thompson3

Oct 28

Scoping of closure in a loop

Thanks Luther, that's clear now. > One thing I don't understand is how fn can see ct

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Scoping of closure in a loop

Thanks Luther, that's clear now. > One thing I don't understand is how fn can see ct

Oct 28

Oct 28

New proposal for easy sep/end options in print function

Sorry to bother you again with this :) (follow-up to my post of Oct. 1). New idea for easy "pimp

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New proposal for easy sep/end options in print function

Sorry to bother you again with this :) (follow-up to my post of Oct. 1). New idea for easy "pimp

Oct 28

Sergey Bronnikov, Roberto Ierusalimschy2

Oct 27

An assertion is triggered in luaK_storevar

> an assertion is triggered on execution of a Lua chunk below: > > lua -e "function a(.

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An assertion is triggered in luaK_storevar

> an assertion is triggered on execution of a Lua chunk below: > > lua -e "function a(.

Oct 27

名前이름, … Martin Eden6

Oct 24

Suggestion: Reusable formula in Lua

On 2025-10-24 06:10, 名前이름 wrote: > What if it's a long formula, custom formula specifically

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Suggestion: Reusable formula in Lua

On 2025-10-24 06:10, 名前이름 wrote: > What if it's a long formula, custom formula specifically

Oct 24

重归混沌, … Sewbacca20

Oct 23

Some thoughts about string

>> "The string is a stark data structure and everywhere it is passed there >> is

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Some thoughts about string

>> "The string is a stark data structure and everywhere it is passed there >> is

Oct 23

Oct 23

#include <assert.h> statements in Lua C code

... it would be nice if you could restrict this #include <asssert.h> to exactly one point, best

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#include <assert.h> statements in Lua C code

... it would be nice if you could restrict this #include <asssert.h> to exactly one point, best

Oct 23

Pierre Chapuis, … Philippe Verdy11

Oct 20

loadk.com LuaRocks mirror abuse

Isn't it a possible sign that there may be a webserver issue when responding to download requests

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loadk.com LuaRocks mirror abuse

Isn't it a possible sign that there may be a webserver issue when responding to download requests

Oct 20

Halalaluyafail3, bil til3

Oct 15

Comparing strings, strcoll, and undefined behavior

> the comparison in Lua is based on string compare functions in C compiler I think. Yes, as I

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Comparing strings, strcoll, and undefined behavior

> the comparison in Lua is based on string compare functions in C compiler I think. Yes, as I

Oct 15

Francisco Olarte

Oct 15

sctrcmp-like compare request

Seeing a message about potential problems with strcoll in string compare I have noticed that < and

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sctrcmp-like compare request

Seeing a message about potential problems with strcoll in string compare I have noticed that < and

Oct 15

bil til, Roberto Ierusalimschy6

Oct 15

V5.5 Manual: a small error and 2-3 wishes...

Thank you for this clear example description. Possibly it would be good to add such a "short

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V5.5 Manual: a small error and 2-3 wishes...

Thank you for this clear example description. Possibly it would be good to add such a "short

Oct 15

Alexander Walz, … Sainan5

Oct 14

Lua 5.x parser, Looking beyond luaX_lookahead()

I'm not sure what you mean. I think this was one of the easier patches; I assumed it would need a

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Lua 5.x parser, Looking beyond luaX_lookahead()

I'm not sure what you mean. I think this was one of the easier patches; I assumed it would need a

Oct 14

bil til, Roberto Ierusalimschy3

Oct 12

V5.5: Thanks for great new "fixed ROM option" for BIN code

So now I moved this modification to LuaL_loadfileex: if( !mode) mode= "Bt"; Thanks. Am So.,

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V5.5: Thanks for great new "fixed ROM option" for BIN code

So now I moved this modification to LuaL_loadfileex: if( !mode) mode= "Bt"; Thanks. Am So.,

Oct 12

bil til, … Javier Guerra Giraldez13

Oct 7

Interrupt Callback Functions for small IoT systems (small ROM-RAM)

concerning print function, I think performance / speed is not crucial, as it practically always is a

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Interrupt Callback Functions for small IoT systems (small ROM-RAM)

concerning print function, I think performance / speed is not crucial, as it practically always is a

Oct 7

Martin Cortese, Thijs Schreijer2

Oct 7

On Tue, 7 Oct 2025, at 10:04, Martin Cortese wrote: > Hi everybody, > I'm Martin from Italy

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On Tue, 7 Oct 2025, at 10:04, Martin Cortese wrote: > Hi everybody, > I'm Martin from Italy

Oct 7

Jure Bagić, … Roberto Ierusalimschy4

Sep 21

Potential overflow when dumping string size

I overlooked the header completely *facepalm*! On 25/09/21 11:50AM, Roberto Ierusalimschy wrote: >

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Potential overflow when dumping string size

I overlooked the header completely *facepalm*! On 25/09/21 11:50AM, Roberto Ierusalimschy wrote: >

Sep 21

jy l, … Roberto Ierusalimschy4

Sep 21

Assertion failure of `A <= ((1<<8)-1) && B <= ((1<<8)-1) && C <= ((1<<8)-1) && (k & ~1) == 0'

> ./lua -e 'load("local " .. string.rep("_,", 256) .. "_")'

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Assertion failure of `A <= ((1<<8)-1) && B <= ((1<<8)-1) && C <= ((1<<8)-1) && (k & ~1) == 0'

> ./lua -e 'load("local " .. string.rep("_,", 256) .. "_")'

Sep 21

Alexander Walz, … Francisco Olarte6

Sep 20

Mysterious Lua C API functions lua_getallocf() and lua_setallocf()

On Sat, 20 Sept 2025 at 16:21, Alexander Walz <al-a...@t-online.de> wrote: I stumbled about

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Mysterious Lua C API functions lua_getallocf() and lua_setallocf()

On Sat, 20 Sept 2025 at 16:21, Alexander Walz <al-a...@t-online.de> wrote: I stumbled about

Sep 20

Lars Müller, … Lars Müller38

Sep 19

Proposal: C API function to check whether a table is a sequence

I have now written a proof of concept, and as expected it is much faster than a user iterating the

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Proposal: C API function to check whether a table is a sequence

I have now written a proof of concept, and as expected it is much faster than a user iterating the

Sep 19

Stefano Cossu, … Gé Weijers6

Sep 19

Lua run as user service cannot find /dev/stderr

Thanks for the suggestions. io.output(io.stderr) works as expected and looks like is much more

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Lua run as user service cannot find /dev/stderr

Thanks for the suggestions. io.output(io.stderr) works as expected and looks like is much more

Sep 19

Edward Gynt, … Sainan8

Sep 15

null pointer exception in luaC_checkfinalizer

> checks the linked list for sanity I should clarify that in this case I mean the 'finobj'

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null pointer exception in luaC_checkfinalizer

> checks the linked list for sanity I should clarify that in this case I mean the 'finobj'

Sep 15

Patrick Kurth, … Lars Müller23

Sep 12

Implementation of named function parameters

I strongly agree with the sentiment. Lua does not need "named parameters". If you want

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Implementation of named function parameters

I strongly agree with the sentiment. Lua does not need "named parameters". If you want

Sep 12

Gé Weijers, Roberto Ierusalimschy2

Sep 11

FYI: LUAI_FUNC etc. on MacOS

> FYI: I found that "__attribute__((visibility("internal"))) extern" works

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FYI: LUAI_FUNC etc. on MacOS

> FYI: I found that "__attribute__((visibility("internal"))) extern" works

Sep 11

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