*** empty log message ***

[deliverable/binutils-gdb.git] / gdb / linespec.c

diff --git a/gdb/linespec.c b/gdb/linespec.c
index 3edc09f12c02ba1b58f86810daef89474b7713fe..c22ffe7c6dcf3b6d15be8634639b2c1aee95d462 100644 (file)
--- a/gdb/linespec.c
+++ b/gdb/linespec.c
@@ -286,6 +286,11 @@ struct ls_parser
   /* Is the entire linespec quote-enclosed?  */
   int is_quote_enclosed;
 
+  /* Is a keyword syntactically valid at this point?
+     In, e.g., "break thread thread 1", the leading "keyword" must not
+     be interpreted as such.  */
+  int keyword_ok;
+
   /* The state of the parse.  */
   struct linespec_state state;
 #define PARSER_STATE(PPTR) (&(PPTR)->state)
@@ -607,6 +612,10 @@ linespec_lexer_lex_string (linespec_parser *parser)
          if (isspace (*PARSER_STREAM (parser)))
            {
              p = skip_spaces (PARSER_STREAM (parser));
+             /* When we get here we know we've found something followed by
+                a space (we skip over parens and templates below).
+                So if we find a keyword now, we know it is a keyword and not,
+                say, a function name.  */
              if (linespec_lexer_lex_keyword (p) != NULL)
                {
                  LS_TOKEN_STOKEN (token).ptr = start;
@@ -716,8 +725,10 @@ linespec_lexer_lex_one (linespec_parser *parser)
       /* Skip any whitespace.  */
       PARSER_STREAM (parser) = skip_spaces (PARSER_STREAM (parser));
 
-      /* Check for a keyword.  */
-      keyword = linespec_lexer_lex_keyword (PARSER_STREAM (parser));
+      /* Check for a keyword, they end the linespec.  */
+      keyword = NULL;
+      if (parser->keyword_ok)
+       keyword = linespec_lexer_lex_keyword (PARSER_STREAM (parser));
       if (keyword != NULL)
        {
          parser->lexer.current.type = LSTOKEN_KEYWORD;
@@ -841,7 +852,7 @@ add_sal_to_sals (struct linespec_state *self,
 
       self->canonical_names = xrealloc (self->canonical_names,
                                        sals->nelts * sizeof (char *));
-      if (!literal_canonical && sal->symtab && sal->symtab->filename)
+      if (!literal_canonical && sal->symtab)
        {
          char *filename = sal->symtab->filename;
 
@@ -2024,6 +2035,10 @@ parse_linespec (linespec_parser *parser, char **argptr)
        }
     }
 
+  /* A keyword at the start cannot be interpreted as such.
+     Consider "b thread thread 42".  */
+  parser->keyword_ok = 0;
+
   parser->lexer.saved_arg = *argptr;
   parser->lexer.stream = argptr;
   file_exception.reason = 0;
@@ -2080,24 +2095,24 @@ parse_linespec (linespec_parser *parser, char **argptr)
       cleanup = make_cleanup (xfree, var);
       PARSER_RESULT (parser)->line_offset
        = linespec_parse_variable (PARSER_STATE (parser), var);
+      do_cleanups (cleanup);
 
       /* If a line_offset wasn't found (VAR is the name of a user
         variable/function), then skip to normal symbol processing.  */
       if (PARSER_RESULT (parser)->line_offset.sign != LINE_OFFSET_UNKNOWN)
        {
-         discard_cleanups (cleanup);
-
          /* Consume this token.  */
          linespec_lexer_consume_token (parser);
 
          goto convert_to_sals;
        }
-
-      do_cleanups (cleanup);
     }
   else if (token.type != LSTOKEN_STRING && token.type != LSTOKEN_NUMBER)
     unexpected_linespec_error (parser);
 
+  /* Now we can recognize keywords.  */
+  parser->keyword_ok = 1;
+
   /* Shortcut: If the next token is not LSTOKEN_COLON, we know that
      this token cannot represent a filename.  */
   token = linespec_lexer_peek_token (parser);