fixed #187

also:
- fixed #188
- fixed #189
- updated conformance tests
- version bump

CHANGELOG.md

@@ -21,13 +21,18 @@ template:
 
 -->
 
-## Unreleased
+## v3.3.0
+
+[Released](https://github.com/marzer/tomlplusplus/releases/tag/v3.3.0) 2023-01-29
 
 #### Fixes:
 
 -   fixed null pointer dereference in parser when exceptions are disabled (#169) (@ncaklovic)
 -   fixed spurious warnings in MSVC 19.34
 -   fixed `toml::parse_file()` on windows for non-ASCII paths
+-   fixed a spurious table redefinition error (#187) (@jorisvr)
+-   fixed UB edge-case in integer parsing (#188) (@jorisvr)
+-   fixed some build issues with Apple-flavoured Clang (#189) (@eddelbuettel)
 
 #### Additions:
 

include/toml++/impl/parser.inl

@@ -2262,14 +2262,21 @@ TOML_IMPL_NAMESPACE_START
 				}
 
 				// range check
-				if TOML_UNLIKELY(result > static_cast<uint64_t>((std::numeric_limits<int64_t>::max)()) + (sign < 0 ? 1ull : 0ull))
+				static constexpr auto i64_max = static_cast<uint64_t>((std::numeric_limits<int64_t>::max)());
+				if TOML_UNLIKELY(result > i64_max + (sign < 0 ? 1u : 0u))
 					set_error_and_return_default("'"sv,
 												 traits::full_prefix,
 												 std::string_view{ digits, length },
 												 "' is not representable in 64 bits"sv);
 
 				if constexpr (traits::is_signed)
+				{
+					// avoid signed multiply UB when parsing INT64_MIN
+					if TOML_UNLIKELY(sign < 0 && result == i64_max + 1u)
+						return (std::numeric_limits<int64_t>::min)();
+
 					return static_cast<int64_t>(result) * sign;
+				}
 				else
 					return static_cast<int64_t>(result);
 			}
@@ -3252,13 +3259,28 @@ TOML_IMPL_NAMESPACE_START
 
 				else if (auto tbl = matching_node.as_table(); !is_arr && tbl && !implicit_tables.empty())
 				{
-					if (auto found = impl::find(implicit_tables.begin(), implicit_tables.end(), tbl);
-						found && (tbl->empty() || tbl->is_homogeneous<table>()))
+					if (auto found = impl::find(implicit_tables.begin(), implicit_tables.end(), tbl); found)
 					{
-						implicit_tables.erase(implicit_tables.cbegin() + (found - implicit_tables.data()));
-						tbl->source_.begin = header_begin_pos;
-						tbl->source_.end   = header_end_pos;
-						return tbl;
+						bool ok = true;
+						if (!tbl->empty())
+						{
+							for (auto& [_, child] : *tbl)
+							{
+								if (!child.is_table() && !child.is_array_of_tables())
+								{
+									ok = false;
+									break;
+								}
+							}
+						}
+
+						if (ok)
+						{
+							implicit_tables.erase(implicit_tables.cbegin() + (found - implicit_tables.data()));
+							tbl->source_.begin = header_begin_pos;
+							tbl->source_.end   = header_end_pos;
+							return tbl;
+						}
 					}
 				}
 

include/toml++/impl/preprocessor.h

@@ -515,7 +515,7 @@
 	__pragma(warning(push))                                                                                            \
 	static_assert(true)
 
-#if TOML_HAS_INCLUDE(<CodeAnalysis / Warnings.h>)
+#if TOML_HAS_INCLUDE(<CodeAnalysis/Warnings.h>)
 #pragma warning(push, 0)
 #include <CodeAnalysis/Warnings.h>
 #pragma warning(pop)

include/toml++/impl/version.h

@@ -5,7 +5,7 @@
 #pragma once
 
 #define TOML_LIB_MAJOR 3
-#define TOML_LIB_MINOR 2
+#define TOML_LIB_MINOR 3
 #define TOML_LIB_PATCH 0
 
 #define TOML_LANG_MAJOR 1

include/toml++/toml.h

@@ -7,9 +7,6 @@
 
 #define INCLUDE_TOMLPLUSPLUS_H // old guard name used pre-v3
 
-//# Note: these would be included transitively as with any normal C++ project but
-//# they're listed explicitly here because this file is used as the source for generate_single_header.py.
-
 #include "impl/preprocessor.h"
 
 TOML_PUSH_WARNINGS;
@@ -24,12 +21,12 @@ TOML_DISABLE_SUGGEST_ATTR_WARNINGS;
 #pragma warning(disable : 4251) // dll exports for std lib types
 #endif
 #elif TOML_CLANG
-#pragma clang diagnostic ignored "-Wheader-hygiene"
+TOML_PRAGMA_CLANG(diagnostic ignored "-Wheader-hygiene")
 #if TOML_CLANG >= 12
-#pragma clang diagnostic ignored "-Wc++20-extensions"
+TOML_PRAGMA_CLANG(diagnostic ignored "-Wc++20-extensions")
 #endif
-#if TOML_CLANG == 13 && !defined(__APPLE__)
-#pragma clang diagnostic ignored "-Wreserved-identifier"
+#if TOML_CLANG == 13
+TOML_PRAGMA_CLANG(diagnostic ignored "-Wreserved-identifier")
 #endif
 #endif
 

tests/conformance_iarna_invalid.cpp

@@ -167,122 +167,285 @@ namespace
 
 TEST_CASE("conformance - iarna/invalid")
 {
-	parsing_should_fail(FILE_LINE_ARGS, array_of_tables_1); // array-of-tables-1
+	SECTION("array-of-tables-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, array_of_tables_1); // array-of-tables-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, array_of_tables_2); // array-of-tables-2
+	SECTION("array-of-tables-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, array_of_tables_2); // array-of-tables-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, bare_key_1); // bare-key-1
+	SECTION("bare-key-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, bare_key_1); // bare-key-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, bare_key_2); // bare-key-2
+	SECTION("bare-key-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, bare_key_2); // bare-key-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, bare_key_3); // bare-key-3
+	SECTION("bare-key-3")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, bare_key_3); // bare-key-3
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, comment_control_1); // comment-control-1
+	SECTION("comment-control-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, comment_control_1); // comment-control-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, comment_control_2); // comment-control-2
+	SECTION("comment-control-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, comment_control_2); // comment-control-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, comment_control_3); // comment-control-3
+	SECTION("comment-control-3")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, comment_control_3); // comment-control-3
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, comment_control_4); // comment-control-4
+	SECTION("comment-control-4")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, comment_control_4); // comment-control-4
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, inline_table_imutable_1); // inline-table-imutable-1
+	SECTION("inline-table-imutable-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, inline_table_imutable_1); // inline-table-imutable-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, inline_table_imutable_2); // inline-table-imutable-2
+	SECTION("inline-table-imutable-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, inline_table_imutable_2); // inline-table-imutable-2
+	}
 
 #if !TOML_LANG_UNRELEASED
 
-	parsing_should_fail(FILE_LINE_ARGS, inline_table_trailing_comma); // inline-table-trailing-comma
+	SECTION("inline-table-trailing-comma")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, inline_table_trailing_comma); // inline-table-trailing-comma
+	}
 
 #endif // !TOML_LANG_UNRELEASED
 
-	parsing_should_fail(FILE_LINE_ARGS, int_0_padded); // int-0-padded
+	SECTION("int-0-padded")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, int_0_padded); // int-0-padded
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, int_signed_bin); // int-signed-bin
+	SECTION("int-signed-bin")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, int_signed_bin); // int-signed-bin
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, int_signed_hex); // int-signed-hex
+	SECTION("int-signed-hex")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, int_signed_hex); // int-signed-hex
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, int_signed_oct); // int-signed-oct
+	SECTION("int-signed-oct")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, int_signed_oct); // int-signed-oct
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, key_value_pair_1); // key-value-pair-1
+	SECTION("key-value-pair-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, key_value_pair_1); // key-value-pair-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, key_value_pair_2); // key-value-pair-2
+	SECTION("key-value-pair-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, key_value_pair_2); // key-value-pair-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, multiple_dot_key); // multiple-dot-key
+	SECTION("multiple-dot-key")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, multiple_dot_key); // multiple-dot-key
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, multiple_key); // multiple-key
+	SECTION("multiple-key")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, multiple_key); // multiple-key
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, no_key_name); // no-key-name
+	SECTION("no-key-name")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, no_key_name); // no-key-name
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_control_1); // string-basic-control-1
+	SECTION("string-basic-control-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_basic_control_1); // string-basic-control-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_control_2); // string-basic-control-2
+	SECTION("string-basic-control-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_basic_control_2); // string-basic-control-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_control_3); // string-basic-control-3
+	SECTION("string-basic-control-3")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_basic_control_3); // string-basic-control-3
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_control_4); // string-basic-control-4
+	SECTION("string-basic-control-4")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_basic_control_4); // string-basic-control-4
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_control_1); // string-basic-multiline-control-1
+	SECTION("string-basic-multiline-control-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_control_1); // string-basic-multiline-control-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_control_2); // string-basic-multiline-control-2
+	SECTION("string-basic-multiline-control-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_control_2); // string-basic-multiline-control-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_control_3); // string-basic-multiline-control-3
+	SECTION("string-basic-multiline-control-3")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_control_3); // string-basic-multiline-control-3
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_control_4); // string-basic-multiline-control-4
+	SECTION("string-basic-multiline-control-4")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_control_4); // string-basic-multiline-control-4
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS,
-						string_basic_multiline_invalid_backslash); // string-basic-multiline-invalid-backslash
+	SECTION("string-basic-multiline-invalid-backslash")
+	{
+		parsing_should_fail(FILE_LINE_ARGS,
+							string_basic_multiline_invalid_backslash); // string-basic-multiline-invalid-backslash
+	}
 
-	parsing_should_fail(
-		FILE_LINE_ARGS,
-		string_basic_multiline_out_of_range_unicode_escape_1); // string-basic-multiline-out-of-range-unicode-escape-1
+	SECTION("string-basic-multiline-out-of-range-unicode-escape-1")
+	{
+		parsing_should_fail(
+			FILE_LINE_ARGS,
+			string_basic_multiline_out_of_range_unicode_escape_1); // string-basic-multiline-out-of-range-unicode-escape-1
+	}
 
-	parsing_should_fail(
-		FILE_LINE_ARGS,
-		string_basic_multiline_out_of_range_unicode_escape_2); // string-basic-multiline-out-of-range-unicode-escape-2
+	SECTION("string-basic-multiline-out-of-range-unicode-escape-2")
+	{
+		parsing_should_fail(
+			FILE_LINE_ARGS,
+			string_basic_multiline_out_of_range_unicode_escape_2); // string-basic-multiline-out-of-range-unicode-escape-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_quotes); // string-basic-multiline-quotes
+	SECTION("string-basic-multiline-quotes")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_quotes); // string-basic-multiline-quotes
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_multiline_unknown_escape); // string-basic-multiline-unknown-escape
+	SECTION("string-basic-multiline-unknown-escape")
+	{
+		parsing_should_fail(FILE_LINE_ARGS,
+							string_basic_multiline_unknown_escape); // string-basic-multiline-unknown-escape
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS,
-						string_basic_out_of_range_unicode_escape_1); // string-basic-out-of-range-unicode-escape-1
+	SECTION("string-basic-out-of-range-unicode-escape-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS,
+							string_basic_out_of_range_unicode_escape_1); // string-basic-out-of-range-unicode-escape-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS,
-						string_basic_out_of_range_unicode_escape_2); // string-basic-out-of-range-unicode-escape-2
+	SECTION("string-basic-out-of-range-unicode-escape-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS,
+							string_basic_out_of_range_unicode_escape_2); // string-basic-out-of-range-unicode-escape-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_basic_unknown_escape); // string-basic-unknown-escape
+	SECTION("string-basic-unknown-escape")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_basic_unknown_escape); // string-basic-unknown-escape
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_literal_control_1); // string-literal-control-1
+	SECTION("string-literal-control-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_literal_control_1); // string-literal-control-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_literal_control_2); // string-literal-control-2
+	SECTION("string-literal-control-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_literal_control_2); // string-literal-control-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_literal_control_3); // string-literal-control-3
+	SECTION("string-literal-control-3")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_literal_control_3); // string-literal-control-3
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_literal_control_4); // string-literal-control-4
+	SECTION("string-literal-control-4")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_literal_control_4); // string-literal-control-4
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_literal_multiline_control_1); // string-literal-multiline-control-1
+	SECTION("string-literal-multiline-control-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_literal_multiline_control_1); // string-literal-multiline-control-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_literal_multiline_control_2); // string-literal-multiline-control-2
+	SECTION("string-literal-multiline-control-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_literal_multiline_control_2); // string-literal-multiline-control-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_literal_multiline_control_3); // string-literal-multiline-control-3
+	SECTION("string-literal-multiline-control-3")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_literal_multiline_control_3); // string-literal-multiline-control-3
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_literal_multiline_control_4); // string-literal-multiline-control-4
+	SECTION("string-literal-multiline-control-4")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_literal_multiline_control_4); // string-literal-multiline-control-4
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, string_literal_multiline_quotes); // string-literal-multiline-quotes
+	SECTION("string-literal-multiline-quotes")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, string_literal_multiline_quotes); // string-literal-multiline-quotes
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, table_1); // table-1
+	SECTION("table-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, table_1); // table-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, table_2); // table-2
+	SECTION("table-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, table_2); // table-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, table_3); // table-3
+	SECTION("table-3")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, table_3); // table-3
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, table_4); // table-4
+	SECTION("table-4")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, table_4); // table-4
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, table_invalid_1); // table-invalid-1
+	SECTION("table-invalid-1")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, table_invalid_1); // table-invalid-1
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, table_invalid_2); // table-invalid-2
+	SECTION("table-invalid-2")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, table_invalid_2); // table-invalid-2
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, table_invalid_3); // table-invalid-3
+	SECTION("table-invalid-3")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, table_invalid_3); // table-invalid-3
+	}
 
-	parsing_should_fail(FILE_LINE_ARGS, table_invalid_4); // table-invalid-4
+	SECTION("table-invalid-4")
+	{
+		parsing_should_fail(FILE_LINE_ARGS, table_invalid_4); // table-invalid-4
+	}
 }

tests/user_feedback.cpp

@@ -382,4 +382,15 @@ b = []
 		parse_expected_value(FILE_LINE_ARGS, "6.9342"sv, 6.9342);
 		parse_expected_value(FILE_LINE_ARGS, "-995.9214"sv, -995.9214);
 	}
+
+	SECTION("tomlplusplus/issues/187") // https://github.com/marzer/tomlplusplus/issues/187
+	{
+		parsing_should_succeed(FILE_LINE_ARGS, R"(
+			[[a.b]]
+			x = 1
+
+			[a]
+			y = 2
+		)"sv);
+	}
 }

toml.hpp

@@ -541,7 +541,7 @@
 	__pragma(warning(push))                                                                                            \
 	static_assert(true)
 
-#if TOML_HAS_INCLUDE(<CodeAnalysis / Warnings.h>)
+#if TOML_HAS_INCLUDE(<CodeAnalysis/Warnings.h>)
 #pragma warning(push, 0)
 #include <CodeAnalysis/Warnings.h>
 #pragma warning(pop)
@@ -1115,12 +1115,12 @@ TOML_DISABLE_SUGGEST_ATTR_WARNINGS;
 #pragma warning(disable : 4251) // dll exports for std lib types
 #endif
 #elif TOML_CLANG
-#pragma clang diagnostic ignored "-Wheader-hygiene"
+TOML_PRAGMA_CLANG(diagnostic ignored "-Wheader-hygiene")
 #if TOML_CLANG >= 12
-#pragma clang diagnostic ignored "-Wc++20-extensions"
+TOML_PRAGMA_CLANG(diagnostic ignored "-Wc++20-extensions")
 #endif
-#if TOML_CLANG == 13 && !defined(__APPLE__)
-#pragma clang diagnostic ignored "-Wreserved-identifier"
+#if TOML_CLANG == 13
+TOML_PRAGMA_CLANG(diagnostic ignored "-Wreserved-identifier")
 #endif
 #endif
 
@@ -14262,14 +14262,21 @@ TOML_IMPL_NAMESPACE_START
 				}
 
 				// range check
-				if TOML_UNLIKELY(result > static_cast<uint64_t>((std::numeric_limits<int64_t>::max)()) + (sign < 0 ? 1ull : 0ull))
+				static constexpr auto i64_max = static_cast<uint64_t>((std::numeric_limits<int64_t>::max)());
+				if TOML_UNLIKELY(result > i64_max + (sign < 0 ? 1u : 0u))
 					set_error_and_return_default("'"sv,
 												 traits::full_prefix,
 												 std::string_view{ digits, length },
 												 "' is not representable in 64 bits"sv);
 
 				if constexpr (traits::is_signed)
+				{
+					// avoid signed multiply UB when parsing INT64_MIN
+					if TOML_UNLIKELY(sign < 0 && result == i64_max + 1u)
+						return (std::numeric_limits<int64_t>::min)();
+
 					return static_cast<int64_t>(result) * sign;
+				}
 				else
 					return static_cast<int64_t>(result);
 			}
@@ -15251,13 +15258,28 @@ TOML_IMPL_NAMESPACE_START
 
 				else if (auto tbl = matching_node.as_table(); !is_arr && tbl && !implicit_tables.empty())
 				{
-					if (auto found = impl::find(implicit_tables.begin(), implicit_tables.end(), tbl);
-						found && (tbl->empty() || tbl->is_homogeneous<table>()))
+					if (auto found = impl::find(implicit_tables.begin(), implicit_tables.end(), tbl); found)
 					{
-						implicit_tables.erase(implicit_tables.cbegin() + (found - implicit_tables.data()));
-						tbl->source_.begin = header_begin_pos;
-						tbl->source_.end   = header_end_pos;
-						return tbl;
+						bool ok = true;
+						if (!tbl->empty())
+						{
+							for (auto& [_, child] : *tbl)
+							{
+								if (!child.is_table() && !child.is_array_of_tables())
+								{
+									ok = false;
+									break;
+								}
+							}
+						}
+
+						if (ok)
+						{
+							implicit_tables.erase(implicit_tables.cbegin() + (found - implicit_tables.data()));
+							tbl->source_.begin = header_begin_pos;
+							tbl->source_.end   = header_end_pos;
+							return tbl;
+						}
 					}
 				}
 

tools/generate_conformance_tests.py

@@ -470,6 +470,10 @@ def load_burnsushi_tests(tests):
 	))
 	add_condition(tests['valid']['burntsushi'], 'TOML_LANG_UNRELEASED', (
 		'string-escape-esc', # \e in strings
+		'datetime-no-seconds', # omitting seconds from date-times
+		'inline-table-newline',
+		'key-unicode',
+		'string-hex-escape'
 	))
 
 	tests['invalid']['burntsushi'] = load_tests(Path(root_dir, 'invalid'), False)
@@ -575,6 +579,8 @@ def write_test_file(name, all_tests):
 					write('')
 					write(f'#if {condition}');
 				for test in tests:
+					write('')
+					write(f'\tSECTION("{test.name()}") {{')
 					write('')
 					expected = test.expected()
 					if isinstance(expected, bool):
@@ -589,6 +595,9 @@ def write_test_file(name, all_tests):
 						write(f'\t\tconst auto expected = {s};')
 						write('\t\tREQUIRE(tbl == expected);')
 						write('\t});')
+					write('')
+					write('\t}')
+					write('')
 				if condition != '':
 					write('')
 					write(f'#endif // {condition}');