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deadlock when running multiple c compilations in parallel #22453

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Techatrix opened this issue Jan 9, 2025 · 0 comments
Open

deadlock when running multiple c compilations in parallel #22453

Techatrix opened this issue Jan 9, 2025 · 0 comments
Labels
bug Observed behavior contradicts documented or intended behavior
Milestone
0.14.0

Comments

@Techatrix
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Zig Version

0.14.0-dev.2628+5b5c60f43

Steps to Reproduce and Observed Behavior

The following bash script will never teminate:

repo.sh 
#!/usr/bin/env bash

# Requires GNU parallel

# Ensure that no manifest files exist
rm -rf ~/.cache/zig

[ ! -d tree-sitter-jsdoc ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-jsdoc
[ ! -d tree-sitter-python ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-python
[ ! -d tree-sitter-vimdoc ] && git clone --depth 1 https://github.com/neovim/tree-sitter-vimdoc
[ ! -d tree-sitter-luap ] && git clone --depth 1 https://github.com/vhyrro/tree-sitter-luap
[ ! -d tree-sitter-query ] && git clone --depth 1 https://github.com/tree-sitter-grammars/tree-sitter-query
[ ! -d tree-sitter-luadoc ] && git clone --depth 1 https://github.com/tree-sitter-grammars/tree-sitter-luadoc
[ ! -d tree-sitter-printf ] && git clone --depth 1 https://github.com/tree-sitter-grammars/tree-sitter-printf
[ ! -d tree-sitter-xml ] && git clone --depth 1 https://github.com/tree-sitter-grammars/tree-sitter-xml
[ ! -d tree-sitter-yaml ] && git clone --depth 1 https://github.com/tree-sitter-grammars/tree-sitter-yaml
[ ! -d tree-sitter-bash ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-bash
[ ! -d tree-sitter-markdown ] && git clone --depth 1 https://github.com/tree-sitter-grammars/tree-sitter-markdown
[ ! -d tree-sitter-typescript ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-typescript
[ ! -d tree-sitter-vim ] && git clone --depth 1 https://github.com/tree-sitter-grammars/tree-sitter-vim
[ ! -d tree-sitter-markdown ] && git clone --depth 1 https://github.com/tree-sitter-grammars/tree-sitter-markdown
[ ! -d tree-sitter-tsx ] && git clone --depth 1 https://github.com/sourcegraph/tree-sitter-tsx
[ ! -d tree-sitter-agda ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-agda
[ ! -d tree-sitter-c ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-c
[ ! -d tree-sitter-cpp ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-cpp
[ ! -d tree-sitter-css ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-css
[ ! -d tree-sitter-go ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-go
[ ! -d tree-sitter-haskell ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-haskell
[ ! -d tree-sitter-html ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-html
[ ! -d tree-sitter-java ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-java
[ ! -d tree-sitter-javascript ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-javascript
[ ! -d tree-sitter-jsdoc ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-jsdoc
[ ! -d tree-sitter-json ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-json
[ ! -d tree-sitter-julia ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-julia
[ ! -d tree-sitter-python ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-python
[ ! -d tree-sitter-regex ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-regex
[ ! -d tree-sitter-ruby ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-ruby
[ ! -d tree-sitter-rust ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-rust
[ ! -d tree-sitter-scala ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-scala
[ ! -d tree-sitter-toml ] && git clone --depth 1 https://github.com/tree-sitter/tree-sitter-toml

echo "Begin compiling..."

parallel -j32 ::: \
  "cd tree-sitter-jsdoc; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-python; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-vimdoc; zig c++ -o parser.so src/parser.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-luap; zig c++ -o parser.so src/parser.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-query; zig c++ -o parser.so src/parser.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-luadoc; zig c++ -o parser.so src/parser.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-printf; zig c++ -o parser.so src/parser.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-xml/xml; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-yaml; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-bash; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-markdown/tree-sitter-markdown-inline; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-markdown/tree-sitter-markdown; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-typescript/typescript; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-vim; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-tsx/tsx; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-agda; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-c; zig c++ -o parser.so src/parser.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-cpp; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-css; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-go; zig c++ -o parser.so src/parser.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-haskell; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-html; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-java; zig c++ -o parser.so src/parser.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-javascript; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-jsdoc; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-json; zig c++ -o parser.so src/parser.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-julia; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-python; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-regex; zig c++ -o parser.so src/parser.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-ruby; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-rust; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-scala; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os" \
  "cd tree-sitter-toml; zig c++ -o parser.so src/parser.c src/scanner.c -lc -Isrc -shared -Os"
Output of lslocks | grep zig 
zig             179911 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179792 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179935 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179799 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179790 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180122 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180074 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179856 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180074 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179935 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             180087 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             180020 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179799 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179856 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179792 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179935 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             180573 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             180573 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             180573 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179790 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179800 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179797 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179881 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179949 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             180122 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179795 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180001 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179799 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180027 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180054 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             180122 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179949 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             180054 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             180122 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179949 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             180573 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             180027 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             180122 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179933 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179969 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179904 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179799 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             180119 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179856 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179791 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             180087 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179911 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179999 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179801 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179798 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179949 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179868 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179800 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179795 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179881 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179935 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             180001 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179790 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             180054 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             180074 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179797 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179792 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             180020 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179970 FLOCK   8,4K READ   0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179970 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             180020 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179904 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             180119 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179797 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179999 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179792 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180020 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180027 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179791 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179800 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179904 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179881 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179969 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179791 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179969 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             180027 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             180573 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179856 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179790 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179798 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179868 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179797 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179933 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179969 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             180087 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179935 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179800 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179801 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179799 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             180027 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             180122 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179970 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             180001 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179904 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179881 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             180119 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             180020 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179791 FLOCK    11K READ   0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             180054 FLOCK    11K READ   0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179791 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             180074 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             180087 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179969 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179881 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179911 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179801 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179792 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179911 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179801 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             180119 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179911 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179949 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179933 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180054 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179935 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180119 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             180074 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             180087 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179856 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179799 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179790 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179881 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             180573 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179795 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179969 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179856 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179801 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179801 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179904 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             180087 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179868 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179797 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             180119 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179797 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179904 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             180020 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179868 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179933 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179868 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179999 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179798 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179933 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179999 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179790 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179795 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179970 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             180001 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179933 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179800 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179970 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179999 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179798 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             180027 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             180054 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             180001 FLOCK  16,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b32d74cf33debeb8fed5166378c1476a.txt
zig             179791 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179868 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179800 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179970 FLOCK  20,1K READ   0          0          0 /home/techatrix/.cache/zig/h/b4ff4a8f3c42603aa2ab1225568c776a.txt
zig             179798 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             180001 FLOCK 126,8K READ   0          0          0 /home/techatrix/.cache/zig/h/c211d488984bfaacf74d2f78bd10536b.txt
zig             179795 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt
zig             179798 FLOCK  92,8K READ   0          0          0 /home/techatrix/.cache/zig/h/98573db57848ef6f2b456bcaee891b01.txt

The deadlock can be observed in the following lines:

zig             179791 FLOCK    11K READ   0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt
zig             179791 FLOCK   8,4K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179970 FLOCK   8,4K READ   0          0          0 /home/techatrix/.cache/zig/h/a52cf79dd888f0fc3f1fcf20603aa79d.txt
zig             179970 FLOCK    11K WRITE* 0          0          0 /home/techatrix/.cache/zig/h/3b56e9bf1e38e2113939d216af801760.txt

The backtrace of the affacted processes shows the following:

(lldb) process attach --pid 179970
(lldb) thread backtrace 3
  thread #3, name = 'zig', stop reason = signal SIGSTOP
    frame #0: 0x00007f52f230564b
    frame #1: 0x0000000001ca5b04 zig`fs.File.lock(file=<unavailable>, l=exclusive) at File.zig:1648:27
    frame #2: 0x0000000001ac8921 zig`Build.Cache.Manifest.upgradeToExclusiveLock(self=0x00007f52f1203070) at Cache.zig:1114:31
    frame #3: 0x0000000001962dc4 zig`Build.Cache.Manifest.hit(self=0x00007f52f1203070) at Cache.zig:738:52
    frame #4: 0x00000000022e889d zig`Compilation.updateCObject(comp=0x000000001a9d7d80, c_object=0x000000001a9e5980, c_obj_prog_node=<unavailable>) at Compilation.zig:4718:63
    frame #5: 0x0000000001ee2bda zig`Compilation.workerUpdateCObject(comp=0x000000001a9d7d80, c_object=0x000000001a9e5980, progress_node=<unavailable>) at Compilation.zig:4541:23
    frame #6: 0x0000000001ee2d5b zig`Thread.Pool.spawnWg__anon_205269.Closure.runFn(runnable=0x000000001a9e5f78) at Pool.zig:115:39
    frame #7: 0x0000000001e933be zig`Thread.Pool.worker(pool=0x00007fffbb38ff48) at Pool.zig:291:32
    frame #8: 0x0000000001c6aa9b zig`Thread.callFn__anon_197232(args=<unavailable>) at Thread.zig:486:13
    frame #9: 0x0000000001a94333 zig`Thread.PosixThreadImpl.spawn__anon_133060.Instance.entryFn(raw_arg=0x000000001a9bf920) at Thread.zig:755:30

All other threads were idle. The line numbers may not be accurate since I used a compiler build from about a week ago.

Expected Behavior

no deadlock
@Techatrix Techatrix added the bug Observed behavior contradicts documented or intended behavior label Jan 9, 2025
@andrewrk andrewrk added this to the 0.14.0 milestone Jan 25, 2025
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@andrewrk @Techatrix