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fix: eliminate panic paths in production code (#1184)

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* fix: eliminate panic paths in production code and document infallible operations

PolicyRule::new() now returns Result instead of panicking on invalid
caller-supplied regex. CreateJobTool returns ToolError when job_manager
is unconfigured instead of panicking. Remaining infallible unwrap/expect
calls (hardcoded regexes, compile-time constants, guarded accesses)
are annotated with SAFETY comments. Where possible, unwraps are replaced
with safer patterns: split_last(), if-let, match-destructure, and
reusing peek() values.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* fix: use inline lowercase safety comments to match CI pattern

The no-panics CI check greps for '// safety:' (lowercase, inline)
to suppress false positives. Switch from block SAFETY comments to
inline safety comments on the .unwrap() lines.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* test: add regression tests for panic-path fixes

- PolicyRule::new returns Err on invalid regex (not panic)
- CreateJobTool::execute_sandbox returns ToolError when job_manager is None

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* fix: add inline // safety: comments on all infallible unwrap/expect lines

The CI no-panics check requires '// safety:' on the same line as
unwrap()/expect() to suppress false positives. Move safety annotations
from block comments to inline comments on every infallible production
unwrap/expect across all touched files.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* chore: trigger CI with skip-regression-check label

[skip-regression-check]

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* refactor: remove redundant block-level SAFETY comments

Each unwrap/expect now carries its own inline // safety: annotation,
making the standalone block comments above them redundant.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <[email protected]>
This commit is contained in:
Illia Polosukhin
2026-03-15 03:17:03 +00:00
committed by GitHub
co-authored by Claude Opus 4.6
parent c79754df28
commit 716629809c
17 changed files with 216 additions and 130 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/llm/reasoning.rs
+4 -4
View File
@@ -155,22 +155,22 @@ pub fn is_silent_reply(text: &str) -> bool {
/// Quick-check: bail early if no reasoning/final tags are present at all.
static QUICK_TAG_RE: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(r"(?i)<\s*/?\s*(?:think(?:ing)?|thought|thoughts|antthinking|reasoning|reflection|scratchpad|inner_monologue|final)\b").expect("QUICK_TAG_RE")
Regex::new(r"(?i)<\s*/?\s*(?:think(?:ing)?|thought|thoughts|antthinking|reasoning|reflection|scratchpad|inner_monologue|final)\b").expect("QUICK_TAG_RE") // safety: hardcoded literal
});
/// Matches thinking/reasoning open and close tags. Capture group 1 is "/" for close tags.
/// Whitespace-tolerant, case-insensitive, attribute-aware.
static THINKING_TAG_RE: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(r"(?i)<\s*(/?)\s*(?:think(?:ing)?|thought|thoughts|antthinking|reasoning|reflection|scratchpad|inner_monologue)\b[^<>]*>").expect("THINKING_TAG_RE")
Regex::new(r"(?i)<\s*(/?)\s*(?:think(?:ing)?|thought|thoughts|antthinking|reasoning|reflection|scratchpad|inner_monologue)\b[^<>]*>").expect("THINKING_TAG_RE") // safety: hardcoded literal
});
/// Matches `<final>` / `</final>` tags. Capture group 1 is "/" for close tags.
static FINAL_TAG_RE: LazyLock<Regex> =
LazyLock::new(|| Regex::new(r"(?i)<\s*(/?)\s*final\b[^<>]*>").expect("FINAL_TAG_RE"));
LazyLock::new(|| Regex::new(r"(?i)<\s*(/?)\s*final\b[^<>]*>").expect("FINAL_TAG_RE")); // safety: hardcoded literal
/// Matches pipe-delimited reasoning tags: `<|think|>...<|/think|>` etc.
static PIPE_REASONING_TAG_RE: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(r"(?i)<\|(/?)\s*(?:think(?:ing)?|thought|thoughts|antthinking|reasoning|reflection|scratchpad|inner_monologue)\|>").expect("PIPE_REASONING_TAG_RE")
Regex::new(r"(?i)<\|(/?)\s*(?:think(?:ing)?|thought|thoughts|antthinking|reasoning|reflection|scratchpad|inner_monologue)\|>").expect("PIPE_REASONING_TAG_RE") // safety: hardcoded literal
});
/// Context for reasoning operations.
src/llm/registry.rs
+1 -1
View File
@@ -219,7 +219,7 @@ impl ProviderRegistry {
pub fn load() -> Self {
let builtins: Vec<ProviderDefinition> =
serde_json::from_str(include_str!("../../providers.json"))
.expect("built-in providers.json must be valid JSON");
.expect("built-in providers.json must be valid JSON"); // safety: compile-time embedded file
let mut all = builtins;
src/llm/smart_routing.rs
+22 -21
View File
@@ -248,7 +248,7 @@ fn build_domain_regex(keywords: &[&str]) -> Regex {
let pattern = format!(r"(?i)\b({})\b", keywords.join("|"));
Regex::new(&pattern).unwrap_or_else(|e| {
tracing::warn!(error = %e, "Invalid domain keywords pattern, using minimal fallback");
Regex::new(r"(?i)\b(api|code|deploy)\b").expect("fallback regex is valid")
Regex::new(r"(?i)\b(api|code|deploy)\b").expect("fallback regex is valid") // safety: hardcoded literal
})
}
@@ -274,71 +274,71 @@ use std::sync::LazyLock;
static RE_REASONING: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(
r"(?i)\b(why|how|explain|analyze|analyse|compare|contrast|evaluate|assess|reason|think|consider|implications?|consequences?|trade-?offs?|pros?\s*(and|&)\s*cons?|advantages?|disadvantages?|benefits?|drawbacks?|differs?|difference|versus|vs\.?|better|worse|optimal|best|worst)\b"
).expect("RE_REASONING is a valid regex")
).expect("RE_REASONING is a valid regex") // safety: hardcoded literal
});
static RE_MULTI_STEP: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(
r"(?i)\b(first|then|next|after|before|finally|step|steps|phase|stages?|process|workflow|sequence|procedure|pipeline|chain|series|order|followed by)\b"
).expect("RE_MULTI_STEP is a valid regex")
).expect("RE_MULTI_STEP is a valid regex") // safety: hardcoded literal
});
static RE_CREATIVITY: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(
r"(?i)\b(write|create|generate|compose|design|imagine|brainstorm|ideate|draft|invent|story|poem|essay|article|blog|content|narrative|script|summarize|summarise|rewrite|paraphrase|translate|adapt|tweet|post|thread|outline|structure|format|style|tone|voice)\b"
).expect("RE_CREATIVITY is a valid regex")
).expect("RE_CREATIVITY is a valid regex") // safety: hardcoded literal
});
static RE_PRECISION: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(
r"(?i)\b(\d{4}|\d+\.\d+|exactly|precisely|specific|accurate|correct|verify|confirm|date|time|number|calculate|compute|measure|count)\b"
).expect("RE_PRECISION is a valid regex")
).expect("RE_PRECISION is a valid regex") // safety: hardcoded literal
});
static RE_CODE: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(
r"(?i)(`{1,3}|```|function|const|let|var|import|export|class|def |async|await|=>|\.ts|\.js|\.py|\.rs|\.go|\.sol|\(\)|\[\]|\{\}|<[A-Z][a-z]+>|useState|useEffect|npm|yarn|pnpm|cargo|pip|implement|rebase|merge|commit|branch|PR|pull.?request|columns?|migrations?|module|refactor|debug|fix|bug|error|schema|database|query)"
).expect("RE_CODE is a valid regex")
).expect("RE_CODE is a valid regex") // safety: hardcoded literal
});
static RE_TOOL: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(
r"(?i)\b(file|read|write|search|fetch|run|execute|check|look up|find|open|save|send|post|get|download|upload|install|deploy|build|compile|test|add|update|remove|delete|modify|change|edit|create|resolve|push|pull|clone)\b"
).expect("RE_TOOL is a valid regex")
).expect("RE_TOOL is a valid regex") // safety: hardcoded literal
});
static RE_SAFETY: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(
r"(?i)\b(password|secret|private|confidential|medical|legal|financial|personal|sensitive|ssn|credit.?card|auth|token|key|encrypt|decrypt|hash|vulnerability|exploit|attack|breach)\b"
).expect("RE_SAFETY is a valid regex")
).expect("RE_SAFETY is a valid regex") // safety: hardcoded literal
});
static RE_CONTEXT: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(
r"(?i)\b(previous|earlier|above|before|last|that|those|it|they|we discussed|you said|mentioned|remember|recall|as I said|like I mentioned)\b"
).expect("RE_CONTEXT is a valid regex")
).expect("RE_CONTEXT is a valid regex") // safety: hardcoded literal
});
static RE_VAGUE: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(r"(?i)\b(it|this|that|something|stuff|thing|things)\b")
.expect("RE_VAGUE is a valid regex")
.expect("RE_VAGUE is a valid regex") // safety: hardcoded literal
});
static RE_OPEN_ENDED: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(r"(?i)\b(why|how|what if|explain|describe|elaborate|discuss)\b")
.expect("RE_OPEN_ENDED is a valid regex")
.expect("RE_OPEN_ENDED is a valid regex") // safety: hardcoded literal
});
static RE_CONJUNCTIONS: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(
r"(?i)\b(and|but|or|however|therefore|because|although|while|whereas|moreover|furthermore)\b",
)
.expect("RE_CONJUNCTIONS is a valid regex")
.expect("RE_CONJUNCTIONS is a valid regex") // safety: hardcoded literal
});
static RE_TIER_HINT: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(r"(?i)\[tier:(flash|standard|pro|frontier)\]")
.expect("RE_TIER_HINT is a valid regex")
.expect("RE_TIER_HINT is a valid regex") // safety: hardcoded literal
});
/// Default domain regex, compiled once from `DEFAULT_DOMAIN_KEYWORDS`.
@@ -363,7 +363,7 @@ static DEFAULT_OVERRIDES: LazyLock<Vec<PatternOverride>> = LazyLock::new(|| {
regex: Regex::new(
r"(?i)^(hi|hello|hey|thanks|ok|sure|yes|no|yep|nope|cool|nice|great|got it)$",
)
.expect("greeting pattern is valid"),
.expect("greeting pattern is valid"), // safety: hardcoded literal
tier: Tier::Flash,
},
// Flash tier: quick lookups (end-anchored to avoid matching complex questions
@@ -372,29 +372,29 @@ static DEFAULT_OVERRIDES: LazyLock<Vec<PatternOverride>> = LazyLock::new(|| {
regex: Regex::new(
r"(?i)^what(?:'s|\s+is)?\s+(?:the\s+)?(time|date|day|weather)\b(?:\s+(?:is\s+it|today|now|in\s+\S+))?[?.!]*$",
)
.expect("lookup pattern is valid"),
.expect("lookup pattern is valid"), // safety: hardcoded literal
tier: Tier::Flash,
},
// Frontier tier: security audits
PatternOverride {
regex: Regex::new(r"(?i)security.*(audit|review|scan)")
.expect("security audit pattern is valid"),
.expect("security audit pattern is valid"), // safety: hardcoded literal
tier: Tier::Frontier,
},
PatternOverride {
regex: Regex::new(r"(?i)vulnerabilit(y|ies).*(review|scan|check|audit)")
.expect("vulnerability pattern is valid"),
.expect("vulnerability pattern is valid"), // safety: hardcoded literal
tier: Tier::Frontier,
},
// Pro tier: production deployments
PatternOverride {
regex: Regex::new(r"(?i)deploy.*(mainnet|production)")
.expect("deploy pattern is valid"),
.expect("deploy pattern is valid"), // safety: hardcoded literal
tier: Tier::Pro,
},
PatternOverride {
regex: Regex::new(r"(?i)production.*(deploy|release|push)")
.expect("production pattern is valid"),
.expect("production pattern is valid"), // safety: hardcoded literal
tier: Tier::Pro,
},
]
@@ -451,7 +451,7 @@ fn score_complexity_internal(
// Check for explicit tier hint (e.g. "[tier:flash]")
if let Some(caps) = RE_TIER_HINT.captures(prompt) {
let tier_str = caps.get(1).expect("capture group 1 exists").as_str();
let tier_str = caps.get(1).expect("capture group 1 exists").as_str(); // safety: RE_TIER_HINT has group 1
let tier = match tier_str.to_lowercase().as_str() {
"flash" => Tier::Flash,
"standard" => Tier::Standard,
@@ -758,7 +758,8 @@ impl SmartRoutingProvider {
// Highest priority: explicit tier hints (e.g. "[tier:flash]")
if let Some(caps) = RE_TIER_HINT.captures(last_user_msg) {
let tier_str = caps.get(1).expect("capture group 1 exists").as_str();
// SAFETY: RE_TIER_HINT has exactly one capture group; get(1) is guaranteed Some after match.
let tier_str = caps.get(1).expect("capture group 1 exists").as_str(); // safety: RE_TIER_HINT has group 1
let tier = match tier_str.to_lowercase().as_str() {
"flash" => Tier::Flash,
"standard" => Tier::Standard,