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bugfix: append new parameters to ngx_lua_ffi_balancer_set_current_pee… #476

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xiaocang
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…r at function end.

Avoid inserting new parameters in the middle of the function to prevent core dumps when using old lua-resty-core with new lua-nginx-module.

Example stack trace:

Message: Process 1414245 (nginx) of user 1000 dumped core.

        Stack trace of thread 1414245:
        #0  0x00007ff596938285 __strlen_avx2 (libc.so.6 + 0x162285)
        #1  0x00007ff596f623d2 lj_cf_ffi_string (libluajit-5.1.so.2 + 0x523d2)
        #2  0x00007ff596f1bb4b lj_BC_FUNCC (libluajit-5.1.so.2 + 0xbb4b)
        #3  0x00007ff596f74223 lua_pcall (libluajit-5.1.so.2 + 0x64223)
        #4  0x00000000005044b7 n/a (/home/jiahao/work/org/lua-resty-core/work/nginx/sbin/nginx + 0x1044b7)

I hereby granted the copyright of the changes in this pull request
to the authors of this lua-resty-core project.

…r at function end.

Avoid inserting new parameters in the middle of the function to prevent core
dumps when using old lua-resty-core with new lua-nginx-module.

Example stack trace:

```
Message: Process 1414245 (nginx) of user 1000 dumped core.

        Stack trace of thread 1414245:
        #0  0x00007ff596938285 __strlen_avx2 (libc.so.6 + 0x162285)
        openresty#1  0x00007ff596f623d2 lj_cf_ffi_string (libluajit-5.1.so.2 + 0x523d2)
        openresty#2  0x00007ff596f1bb4b lj_BC_FUNCC (libluajit-5.1.so.2 + 0xbb4b)
        openresty#3  0x00007ff596f74223 lua_pcall (libluajit-5.1.so.2 + 0x64223)
        openresty#4  0x00000000005044b7 n/a (/home/jiahao/work/org/lua-resty-core/work/nginx/sbin/nginx + 0x1044b7)
```
@xiaocang xiaocang requested a review from zhuizhuhaomeng July 11, 2024 10:41
@xiaocang
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releated PR for lua-nginx-module:
openresty/lua-nginx-module#2332

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2 participants