thorneliu opened a new issue, #2242:
URL: https://github.com/apache/brpc/issues/2242
**Describe the bug (描述bug)**
```
/Users/apple/Documents/brpc/src/bvar/detail/sampler.cpp:163:13: warning:
variable 'nremoved' set but not used [-Wunused-but-set-variable]
int nremoved = 0;
^
/Users/apple/Documents/brpc/src/bvar/detail/sampler.cpp:164:13: warning:
variable 'nsampled' set but not used [-Wunused-but-set-variable]
int nsampled = 0;
/Users/apple/Documents/brpc/src/brpc/details/hpack.cpp:492:12: warning:
variable 'out_bytes' set but not used [-Wunused-but-set-variable]
size_t out_bytes = 1;
Users/apple/Documents/brpc/src/brpc/span.cpp:752:17: warning: variable 'i'
set but not used [-Wunused-but-set-variable]
for (size_t i = 0; nscan < max_scan && it->Valid(); ++i, it->Prev()) {
^
```
**To Reproduce (复现方法)**
compile
```
mkdir build
cd build
cmake ../
make -j3
```
**Expected behavior (期望行为)**
No warnings
**Versions (各种版本)**
OS: MacOS Ventura 13.3.1
Apple clang version 14.0.3 (clang-1403.0.22.14.1)
Target: x86_64-apple-darwin22.4.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/binCompiler:
brpc:
5cc470bde4e241cb75cff03c57a4727ac9d510ed
protobuf:
3.31.12
**Additional context/screenshots (更多上下文/截图)**
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