openresty / openresty/lua-resty-core

The Call stack of ngx.re change

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Description

The original ngx.re call link was ngx.re.find -->lua-nginx-module --> ngx_http_lua_ngx_re_find --> ngx_http_lua_ngx_re_match_helper
When compiling openresty, add the compile parameter --with-ld-opt /curl/lib/ -lcurl curl
The /lib/ directory contains the following files: libcurl.a libcurl.la libcurl.so libcurl.so.4 libcurl.so.4.3.0
./configure \ --prefix=/usr/local/openresty \ --with-ld-opt="-Wl,-rpath,/usr/local/openresty/luajit/lib \ -L/*/curl/lib/ -lcurl"
Then the function call stack for ngx.re.find becomes
ngx.re.find() --> re_match_helper -->ngx_lua_ffi_exec_regex -->ngx_http_lua_ffi_exec_regex
ngx.re.find() in regex.lua that calls lua-resty-core.
Why is that? Why does curllib affect the underlying call logic?
Help, thank you very much

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with regex.lua and the ngx.re.find entry point, then compare the call stacks described before and after adding the --with-ld-opt curl flags. Review the OpenResty configure and linking setup to identify why the selected path changes. Done means a reproducible explanation of the behavior, with the relevant call path and build conditions documented.

Written by the indexing model from the issue text.

Assessment

Tech stack
lua
Domain
backend, build-system
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
15/100

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