fix error42

[cparser] / lexer.c

diff --git a/lexer.c b/lexer.c
index 990d285..fe51c2f 100644 (file)
--- a/lexer.c
+++ b/lexer.c
@@ -81,6 +81,11 @@ static inline void next_real_char(void)
 {
        assert(bufpos <= bufend);
        if (bufpos >= bufend) {
+               if (input == NULL) {
+                       c = EOF;
+                       return;
+               }
+
                size_t s = fread(buf + MAX_PUTBACK, 1, sizeof(buf) - MAX_PUTBACK,
                                 input);
                if(s == 0) {
@@ -343,7 +348,7 @@ static void parse_integer_suffix(bool is_oct_hex)
                        if(v >= TARGET_LONG_MIN && v <= TARGET_LONG_MAX) {
                                lexer_token.datatype = type_long;
                                return;
-                       } else if(is_oct_hex && v >= 0 && v <= TARGET_ULONG_MAX) {
+                       } else if(is_oct_hex && v >= 0 && (unsigned long long)v <= (unsigned long long)TARGET_ULONG_MAX) {
                                lexer_token.datatype = type_unsigned_long;
                                return;
                        }
@@ -957,6 +962,9 @@ static void parse_wide_character_constant(void)
 
 end_of_wide_char_constant:;
        size_t             size   = (size_t) obstack_object_size(&symbol_obstack);
+       assert(size % sizeof(wchar_rep_t) == 0);
+       size /= sizeof(wchar_rep_t);
+
        const wchar_rep_t *string = obstack_finish(&symbol_obstack);
 
        lexer_token.type                = T_WIDE_CHARACTER_CONSTANT;
@@ -1373,7 +1381,7 @@ static void parse_preprocessor_directive(void)
 
 #define ELSE_CODE(code)                                    \
                                default:                                   \
-                                       code;                                  \
+                                       code                                   \
                                }                                          \
                        } /* end of while(1) */                        \
                        break;
@@ -1593,6 +1601,7 @@ newline_found:
 void init_lexer(void)
 {
        strset_init(&stringset);
+       symbol_L = symbol_table_insert("L");
 }
 
 void lexer_open_stream(FILE *stream, const char *input_name)
@@ -1601,7 +1610,6 @@ void lexer_open_stream(FILE *stream, const char *input_name)
        lexer_token.source_position.linenr     = 0;
        lexer_token.source_position.input_name = input_name;
 
-       symbol_L = symbol_table_insert("L");
        bufpos = NULL;
        bufend = NULL;
 
@@ -1610,6 +1618,20 @@ void lexer_open_stream(FILE *stream, const char *input_name)
        c = '\n';
 }
 
+void lexer_open_buffer(const char *buffer, size_t len, const char *input_name)
+{
+       input                                  = NULL;
+       lexer_token.source_position.linenr     = 0;
+       lexer_token.source_position.input_name = input_name;
+
+       bufpos = buffer;
+       bufend = buffer + len;
+
+       /* place a virtual \n at the beginning so the lexer knows that we're
+        * at the beginning of a line */
+       c = '\n';
+}
+
 void exit_lexer(void)
 {
        strset_destroy(&stringset);