ESP8266 Community Forum

I've been trying to find out how much space my Lua program is using,
and finding it very difficult. luac compiles it to a file of 18755
bytes; decompiling produces lines of the form:
main <therm.lua:0,0> (78 instructions, 312 bytes at 0x8065d10)
and these byte values sum to 4736. On the other hand, the hexadecimal
values in these lines range from 0x8065d10 to 0x8071ca8, a range of
49048 bytes. One of these three measures is correct, but which?

If I add even a small function to the program I get a refusal to load
and E:M error message with a fairly obscure error code. That makes me
think I'm pretty near the limits of memory, but does anyone know what
those limits actually are?

Thanks - Will

What build version are you using? You didn't answer the Q. You've got to use a current master. Also use luac.cross not luac for examining code, and read my FAQ.

I'm using the current master from GitHub, and compiling it locally with gcc. However, I'm not trying to find the numbers for a specific install, which will vary with the specific modules included in the build, but how to find the numbers generally. The ESP8266 / NodeMCU memory layout is pretty obscure.

Will