CompilerStack: Use location of the current contract as default locati…

…on in post-analysis errors

Changelog.md

@@ -4,6 +4,7 @@ Language Features:
 
 
 Compiler Features:
+ * Error Reporting: Errors reported during code generation now point at the location of the contract when more fine-grained location is not available.
  * SMTChecker: Z3 is now a runtime dependency, not a build dependency (except for emscripten build).
 
 

libsolidity/interface/CompilerStack.cpp

@@ -779,11 +779,11 @@ bool CompilerStack::compile(State _stopAfter)
 					}
 					catch (Error const& _error)
 					{
-						m_errorReporter.codeGenerationError(_error);
+						reportCodeGenerationError(_error, contract);
 					}
 					catch (UnimplementedFeatureError const& _error)
 					{
-						reportUnimplementedFeatureError(_error);
+						reportUnimplementedFeatureError(_error, contract);
 					}
 
 					if (m_errorReporter.hasErrors())
@@ -1614,7 +1614,7 @@ void CompilerStack::generateEVMFromIR(ContractDefinition const& _contract)
 	if (stack.hasErrors())
 	{
 		for (std::shared_ptr<Error const> const& error: stack.errors())
-			reportIRPostAnalysisError(error.get());
+			reportIRPostAnalysisError(error.get(), compiledContract.contract);
 		return;
 	}
 
@@ -2010,18 +2010,47 @@ experimental::Analysis const& CompilerStack::experimentalAnalysis() const
 	return *m_experimentalAnalysis;
 }
 
-void CompilerStack::reportUnimplementedFeatureError(UnimplementedFeatureError const& _error)
+void CompilerStack::reportUnimplementedFeatureError(
+	UnimplementedFeatureError const& _error,
+	ContractDefinition const* _contractDefinition
+)
 {
 	solAssert(_error.comment(), "Errors must include a message for the user.");
+	if (_error.sourceLocation().sourceName)
+		solAssert(m_sources.count(*_error.sourceLocation().sourceName) != 0);
+
+	m_errorReporter.unimplementedFeatureError(
+		1834_error,
+		(_error.sourceLocation().sourceName || !_contractDefinition) ?
+			_error.sourceLocation() :
+			_contractDefinition->location(),
+		*_error.comment()
+	);
+}
 
-	m_errorReporter.unimplementedFeatureError(1834_error, _error.sourceLocation(), *_error.comment());
+void CompilerStack::reportCodeGenerationError(Error const& _error, ContractDefinition const* _contractDefinition)
+{
+	solAssert(_error.type() == Error::Type::CodeGenerationError);
+	solAssert(_error.comment(), "Errors must include a message for the user.");
+	if (_error.sourceLocation() && _error.sourceLocation()->sourceName)
+		solAssert(m_sources.count(*_error.sourceLocation()->sourceName) != 0);
+	solAssert(_contractDefinition);
+
+	m_errorReporter.codeGenerationError(
+		_error.errorId(),
+		(_error.sourceLocation() && _error.sourceLocation()->sourceName) ?
+			*_error.sourceLocation() :
+			_contractDefinition->location(),
+		*_error.comment()
+	);
 }
 
-void CompilerStack::reportIRPostAnalysisError(Error const* _error)
+void CompilerStack::reportIRPostAnalysisError(Error const* _error, ContractDefinition const* _contractDefinition)
 {
 	solAssert(_error);
 	solAssert(_error->comment(), "Errors must include a message for the user.");
 	solAssert(!_error->secondarySourceLocation());
+	solAssert(_contractDefinition);
 
 	// Do not report Yul warnings and infos. These are only reported in pure Yul compilation.
 	if (!Error::isError(_error->severity()))
@@ -2032,7 +2061,7 @@ void CompilerStack::reportIRPostAnalysisError(Error const* _error)
 		_error->type(),
 		// Ignore the original location. It's likely missing, but even if not, it points at Yul source.
 		// CompilerStack can only point at locations in Solidity sources.
-		SourceLocation{},
+		_contractDefinition->location(),
 		*_error->comment()
 	);
 }

libsolidity/interface/CompilerStack.h

@@ -578,8 +578,12 @@ class CompilerStack: public langutil::CharStreamProvider, public evmasm::Abstrac
 		FunctionDefinition const& _function
 	) const;
 
-	void reportUnimplementedFeatureError(langutil::UnimplementedFeatureError const& _error);
-	void reportIRPostAnalysisError(langutil::Error const* _error);
+	void reportUnimplementedFeatureError(
+		langutil::UnimplementedFeatureError const& _error,
+		ContractDefinition const* _contractDefinition = nullptr
+	);
+	void reportCodeGenerationError(langutil::Error const& _error, ContractDefinition const* _contractDefinition);
+	void reportIRPostAnalysisError(langutil::Error const* _error, ContractDefinition const* _contractDefinition);
 
 	ReadCallback::Callback m_readFile;
 	OptimiserSettings m_optimiserSettings;

libyul/YulStack.cpp

@@ -439,6 +439,9 @@ Dialect const& YulStack::dialect() const
 
 void YulStack::reportUnimplementedFeatureError(UnimplementedFeatureError const& _error)
 {
+	yulAssert(m_charStream);
 	yulAssert(_error.comment(), "Errors must include a message for the user.");
+	if (_error.sourceLocation().sourceName)
+		yulAssert(*_error.sourceLocation().sourceName == m_charStream->name());
 	m_errorReporter.unimplementedFeatureError(1920_error, _error.sourceLocation(), *_error.comment());
 }

test/cmdlineTests/standard_outputs_on_compilation_error/output.json

@@ -54,10 +54,19 @@
             "component": "general",
             "errorCode": "1284",
             "formattedMessage": "CodeGenerationError: Some immutables were read from but never assigned, possibly because of optimization.
+ --> C:4:1:
+  |
+4 | contract C {
+  | ^ (Relevant source part starts here and spans across multiple lines).
 
 ",
             "message": "Some immutables were read from but never assigned, possibly because of optimization.",
             "severity": "error",
+            "sourceLocation": {
+                "end": 320,
+                "file": "C",
+                "start": 56
+            },
             "type": "CodeGenerationError"
         }
     ],

test/libsolidity/smtCheckerTests/operators/shifts/shr_unused.sol

@@ -8,4 +8,4 @@ contract C {
 // SMTEngine: all
 // ----
 // Info 1391: CHC: 1 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-80): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/array/nested_calldata_storage.sol

@@ -6,4 +6,4 @@ contract C {
 }
 
 // ----
-// UnimplementedFeatureError 1834: Copying nested calldata dynamic arrays to storage is not implemented in the old code generator.
+// UnimplementedFeatureError 1834: (35-127): Copying nested calldata dynamic arrays to storage is not implemented in the old code generator.

test/libsolidity/syntaxTests/array/nested_calldata_storage2.sol

@@ -6,4 +6,4 @@ contract C {
 }
 
 // ----
-// UnimplementedFeatureError 1834: Copying nested calldata dynamic arrays to storage is not implemented in the old code generator.
+// UnimplementedFeatureError 1834: (35-125): Copying nested calldata dynamic arrays to storage is not implemented in the old code generator.

test/libsolidity/syntaxTests/constants/mod_div_rational.sol

@@ -5,4 +5,4 @@ contract C {
     fixed a4 = 0 / -0.123;
 }
 // ----
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-150): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/experimental/builtin/builtin_type_definition.sol

@@ -89,4 +89,4 @@ contract C {
 // Info 4164: (563-574): Inferred type: (bool, word) -> word
 // Info 4164: (563-567): Inferred type: (?bm:type, ?bn:type)
 // Info 4164: (575-576): Inferred type: (bool, word)
-// UnimplementedFeatureError 1834: No support for calling functions pointers yet.
+// UnimplementedFeatureError 1834: (267-586): No support for calling functions pointers yet.

test/libsolidity/syntaxTests/immutable/no_assignments.sol

@@ -10,4 +10,4 @@ contract C {
 // ====
 // optimize-yul: true
 // ----
-// CodeGenerationError 1284: Some immutables were read from but never assigned, possibly because of optimization.
+// CodeGenerationError 1284: (0-168): Some immutables were read from but never assigned, possibly because of optimization.

test/libsolidity/syntaxTests/inline_arrays/inline_array_fixed_types.sol

@@ -6,4 +6,4 @@ contract test {
 // ----
 // Warning 2072: (50-67): Unused local variable.
 // Warning 2018: (20-119): Function state mutability can be restricted to pure
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-121): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/inline_arrays/inline_array_rationals.sol

@@ -6,4 +6,4 @@ contract test {
 // ----
 // Warning 2072: (50-73): Unused local variable.
 // Warning 2018: (20-118): Function state mutability can be restricted to pure
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-120): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/303_fixed_type_int_conversion.sol

@@ -9,4 +9,4 @@ contract test {
 }
 // ----
 // Warning 2018: (20-147): Function state mutability can be restricted to pure
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-149): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/304_fixed_type_rational_int_conversion.sol

@@ -7,4 +7,4 @@ contract test {
 }
 // ----
 // Warning 2018: (20-104): Function state mutability can be restricted to pure
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-106): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/305_fixed_type_rational_fraction_conversion.sol

@@ -7,4 +7,4 @@ contract test {
 }
 // ----
 // Warning 2018: (20-108): Function state mutability can be restricted to pure
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-110): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/307_rational_unary_minus_operation.sol

@@ -6,4 +6,4 @@ contract test {
     }
 }
 // ----
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-126): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/312_leading_zero_rationals_convert.sol

@@ -8,4 +8,4 @@ contract A {
     }
 }
 // ----
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-289): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/314_fixed_type_zero_handling.sol

@@ -6,4 +6,4 @@ contract test {
 }
 // ----
 // Warning 2018: (20-104): Function state mutability can be restricted to pure
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-106): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/317_fixed_type_valid_explicit_conversions.sol

@@ -7,4 +7,4 @@ contract test {
 }
 // ----
 // Warning 2018: (20-182): Function state mutability can be restricted to pure
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-184): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/323_mapping_with_fixed_literal.sol

@@ -5,4 +5,4 @@ contract test {
     }
 }
 // ----
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-130): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/324_fixed_points_inside_structs.sol

@@ -6,4 +6,4 @@ contract test {
     myStruct a = myStruct(3.125, 3);
 }
 // ----
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-115): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/328_rational_to_fixed_literal_expression.sol

@@ -13,4 +13,4 @@ contract test {
 // ----
 // Warning 2519: (238-252): This declaration shadows an existing declaration.
 // Warning 2018: (20-339): Function state mutability can be restricted to pure
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-341): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/nameAndTypeResolution/343_integer_and_fixed_interaction.sol

@@ -6,4 +6,4 @@ contract test {
 // ----
 // Warning 2072: (50-58): Unused local variable.
 // Warning 2018: (20-89): Function state mutability can be restricted to pure
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-91): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/parsing/declaring_fixed_and_ufixed_variables.sol

@@ -11,4 +11,4 @@ contract A {
 // Warning 2072: (93-104): Unused local variable.
 // Warning 2072: (114-121): Unused local variable.
 // Warning 2018: (41-128): Function state mutability can be restricted to pure
-// UnimplementedFeatureError 1834: Fixed point types not implemented.
+// UnimplementedFeatureError 1834: (0-130): Fixed point types not implemented.

test/libsolidity/syntaxTests/parsing/lexer_numbers_with_underscores_fixed.sol

@@ -7,4 +7,4 @@ contract C {
   }
 }
 // ----
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-109): Not yet implemented - FixedPointType.

test/libsolidity/syntaxTests/types/rational_number_literal_to_fixed_implicit.sol

@@ -13,4 +13,4 @@ contract C {
     }
 }
 // ----
-// UnimplementedFeatureError 1834: Not yet implemented - FixedPointType.
+// UnimplementedFeatureError 1834: (0-317): Not yet implemented - FixedPointType.