bjoernager/rust
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Fix ICE caused by suggestion with no code substitutions

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Change suggestion logic to filter and checking _before_ creating
specific resolution suggestion.

Assert earlier that suggestions contain code substitions to make it
easier in the future to debug invalid uses. If we find this becomes too
noisy in the wild, we can always make the emitter resilient to these
cases and remove the assertions.

Fix #78651.
This commit is contained in:
Esteban Küber 2021-02-13 19:52:12 -08:00
parent 178108bf81
commit 04c2454b1e
4 changed files with 39 additions and 20 deletions
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6
compiler/rustc_errors/src/diagnostic.rs
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@ -295,6 +295,7 @@ impl Diagnostic {
suggestion: Vec<(Span, String)>,
applicability: Applicability,
) -> &mut Self {
assert!(!suggestion.is_empty());
self.suggestions.push(CodeSuggestion {
substitutions: vec![Substitution {
parts: suggestion
@ -318,6 +319,10 @@ impl Diagnostic {
suggestions: Vec<Vec<(Span, String)>>,
applicability: Applicability,
) -> &mut Self {
assert!(!suggestions.is_empty());
for s in &suggestions {
assert!(!s.is_empty());
}
self.suggestions.push(CodeSuggestion {
substitutions: suggestions
.into_iter()
@ -348,6 +353,7 @@ impl Diagnostic {
suggestion: Vec<(Span, String)>,
applicability: Applicability,
) -> &mut Self {
assert!(!suggestion.is_empty());
self.suggestions.push(CodeSuggestion {
substitutions: vec![Substitution {
parts: suggestion