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Fix the cannot read property range of null bug

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This commit is contained in:
Leonid Logvinov
2019-01-30 13:31:01 +01:00
parent 25e42c0ad4
commit e23f90e41c
2 changed files with 7 additions and 1 deletions
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4
packages/sol-tracing-utils/CHANGELOG.json
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@@ -17,6 +17,10 @@
{ {
"note": "Print resasonable error message on bytecode collision", "note": "Print resasonable error message on bytecode collision",
"pr": 1535 "pr": 1535
},
{
"note": "Fix the bug in `ASTVisitor` causing the 'cannot read property `range` of `null`' error",
"pr": 1557
} }
] ]
}, },

4
packages/sol-tracing-utils/src/ast_visitor.ts
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@@ -89,7 +89,9 @@ export class ASTVisitor {
this._visitStatement(ast); this._visitStatement(ast);
} }
public ExpressionStatement(ast: Parser.ExpressionStatement): void { public ExpressionStatement(ast: Parser.ExpressionStatement): void {
this._visitStatement(ast.expression); if (!_.isNull(ast.expression)) {
this._visitStatement(ast.expression);
}
} }
public InlineAssemblyStatement(ast: Parser.InlineAssemblyStatement): void { public InlineAssemblyStatement(ast: Parser.InlineAssemblyStatement): void {
this._visitStatement(ast); this._visitStatement(ast);