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From 2b4c331e70f1f8eaae33537df12c5744dd8e8b09 Mon Sep 17 00:00:00 2001
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From: Hartmut Kaiser <hartmut.kaiser@gmail.com>
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Date: Sat, 16 Mar 2013 14:39:51 +0000
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Subject: [PATCH] Fix #8291: Lexer fails to work on ARM
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[SVN r83462]
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---
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include/boost/spirit/home/support/detail/lexer/generator.hpp | 3 ++-
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include/boost/spirit/home/support/detail/lexer/string_token.hpp | 3 ++-
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2 files changed, 4 insertions(+), 2 deletions(-)
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diff --git a/include/boost/spirit/home/support/detail/lexer/generator.hpp b/include/boost/spirit/home/support/detail/lexer/generator.hpp
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index 49bea2f..9541f6f 100644
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--- a/include/boost/spirit/home/support/detail/lexer/generator.hpp
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+++ b/include/boost/spirit/home/support/detail/lexer/generator.hpp
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@@ -12,6 +12,7 @@
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#include "partition/charset.hpp"
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#include "partition/equivset.hpp"
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#include <memory>
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+#include <limits>
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#include "parser/tree/node.hpp"
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#include "parser/parser.hpp"
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#include "containers/ptr_list.hpp"
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@@ -560,7 +561,7 @@ class basic_generator
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if (token_._negated)
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{
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- CharT curr_char_ = sizeof (CharT) == 1 ? -128 : 0;
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+ CharT curr_char_ = (std::numeric_limits<CharT>::min)();
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std::size_t i_ = 0;
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while (curr_ < chars_end_)
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diff --git a/include/boost/spirit/home/support/detail/lexer/string_token.hpp b/include/boost/spirit/home/support/detail/lexer/string_token.hpp
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index 6bfa6ff..e972a95 100644
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--- a/include/boost/spirit/home/support/detail/lexer/string_token.hpp
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+++ b/include/boost/spirit/home/support/detail/lexer/string_token.hpp
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@@ -10,6 +10,7 @@
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#include "size_t.hpp"
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#include "consts.hpp" // num_chars, num_wchar_ts
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#include <string>
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+#include <limits>
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namespace boost
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{
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@@ -71,7 +72,7 @@ struct basic_string_token
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{
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const std::size_t max_chars_ = sizeof (CharT) == 1 ?
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num_chars : num_wchar_ts;
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- CharT curr_char_ = sizeof (CharT) == 1 ? -128 : 0;
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+ CharT curr_char_ = (std::numeric_limits<CharT>::min)();
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string temp_;
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const CharT *curr_ = _charset.c_str ();
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const CharT *chars_end_ = curr_ + _charset.size ();
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From c480d6c7fcadf3cb5fbaad756ac370275a75e601 Mon Sep 17 00:00:00 2001
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From: Joel de Guzman <djowel@gmail.com>
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Date: Sat, 19 Jul 2014 08:12:53 +0800
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Subject: [PATCH] workaround for lexertl bug on platforms where wchar_t is
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signed (can be negative).
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---
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include/boost/spirit/home/support/detail/lexer/generator.hpp | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/include/boost/spirit/home/support/detail/lexer/generator.hpp b/include/boost/spirit/home/support/detail/lexer/generator.hpp
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index a3b7290..daa06e7 100644
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--- a/include/boost/spirit/home/support/detail/lexer/generator.hpp
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+++ b/include/boost/spirit/home/support/detail/lexer/generator.hpp
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@@ -561,7 +561,12 @@ class basic_generator
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if (token_._negated)
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{
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- CharT curr_char_ = (std::numeric_limits<CharT>::min)();
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+ // $$$ FIXME JDG July 2014 $$$
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+ // this code is problematic on platforms where wchar_t is signed
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+ // with min generating negative numbers. This crashes with BAD_ACCESS
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+ // because of the vector index below:
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+ // ptr_[static_cast<typename Traits::index_type>(curr_char_)]
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+ CharT curr_char_ = 0; // (std::numeric_limits<CharT>::min)();
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std::size_t i_ = 0;
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while (curr_ < chars_end_)
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