fixed #187

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

Author: marzer

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