nordic-dev.net/nix
nordic-dev.net/nix
2
0
Fork 0
mirror of https://github.com/NixOS/nix.git synced 2024-11-29 10:12:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #8148 from hercules-ci/fix-issue-8119-printValue-tBlackhole-abort

Browse Source 
eval: Fix crash on missing printValue tBlackhole case
This commit is contained in:
Robert Hensing 2023-04-03 16:05:55 +02:00 committed by GitHub
commit f3a6de6ba9
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/libexpr/eval.cc
View File

@ -173,7 +173,17 @@ void Value::print(const SymbolTable & symbols, std::ostream & str,
case tFloat: case tFloat:
str << fpoint; str << fpoint;
break; break;
case tBlackhole:
// Although we know for sure that it's going to be an infinite recursion
// when this value is accessed _in the current context_, it's likely
// that the user will misinterpret a simpler «infinite recursion» output
// as a definitive statement about the value, while in fact it may be
// a valid value after `builtins.trace` and perhaps some other steps
// have completed.
str << "«potential infinite recursion»";
break;
default: default:
printError("Nix evaluator internal error: Value::print(): invalid value type %1%", internalType);
abort(); abort();
} }
} }

7
tests/lang.sh
View File

@ -5,12 +5,19 @@ export NIX_REMOTE=dummy://
export NIX_STORE_DIR=/nix/store export NIX_STORE_DIR=/nix/store
nix-instantiate --eval -E 'builtins.trace "Hello" 123' 2>&1 | grepQuiet Hello nix-instantiate --eval -E 'builtins.trace "Hello" 123' 2>&1 | grepQuiet Hello
nix-instantiate --eval -E 'builtins.trace "Hello" 123' 2>/dev/null | grepQuiet 123
nix-instantiate --eval -E 'builtins.addErrorContext "Hello" 123' 2>&1 nix-instantiate --eval -E 'builtins.addErrorContext "Hello" 123' 2>&1
nix-instantiate --trace-verbose --eval -E 'builtins.traceVerbose "Hello" 123' 2>&1 | grepQuiet Hello nix-instantiate --trace-verbose --eval -E 'builtins.traceVerbose "Hello" 123' 2>&1 | grepQuiet Hello
nix-instantiate --eval -E 'builtins.traceVerbose "Hello" 123' 2>&1 | grepQuietInverse Hello nix-instantiate --eval -E 'builtins.traceVerbose "Hello" 123' 2>&1 | grepQuietInverse Hello
nix-instantiate --show-trace --eval -E 'builtins.addErrorContext "Hello" 123' 2>&1 | grepQuietInverse Hello nix-instantiate --show-trace --eval -E 'builtins.addErrorContext "Hello" 123' 2>&1 | grepQuietInverse Hello
expectStderr 1 nix-instantiate --show-trace --eval -E 'builtins.addErrorContext "Hello" (throw "Foo")' | grepQuiet Hello expectStderr 1 nix-instantiate --show-trace --eval -E 'builtins.addErrorContext "Hello" (throw "Foo")' | grepQuiet Hello
nix-instantiate --eval -E 'let x = builtins.trace { x = x; } true; in x' \
2>&1 | grepQuiet -E 'trace: { x = «potential infinite recursion»; }'
nix-instantiate --eval -E 'let x = { repeating = x; tracing = builtins.trace x true; }; in x.tracing'\
2>&1 | grepQuiet -F 'trace: { repeating = «repeated»; tracing = «potential infinite recursion»; }'
set +x set +x
fail=0 fail=0