diff options
Diffstat (limited to 'libcpp/expr.c')
| -rw-r--r-- | libcpp/expr.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/libcpp/expr.c b/libcpp/expr.c index 00149b2..af0e259 100644 --- a/libcpp/expr.c +++ b/libcpp/expr.c @@ -1,6 +1,6 @@ /* Parse C expressions for cpplib. Copyright (C) 1987, 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2001, - 2002, 2004 Free Software Foundation. + 2002, 2004, 2008 Free Software Foundation. Contributed by Per Bothner, 1994. This program is free software; you can redistribute it and/or modify it @@ -809,9 +809,11 @@ static const struct cpp_operator /* COMPL */ {16, NO_L_OPERAND}, /* AND_AND */ {6, LEFT_ASSOC}, /* OR_OR */ {5, LEFT_ASSOC}, - /* QUERY */ {3, 0}, + /* Note that QUERY, COLON, and COMMA must have the same precedence. + However, there are some special cases for these in reduce(). */ + /* QUERY */ {4, 0}, /* COLON */ {4, LEFT_ASSOC | CHECK_PROMOTION}, - /* COMMA */ {2, LEFT_ASSOC}, + /* COMMA */ {4, LEFT_ASSOC}, /* OPEN_PAREN */ {1, NO_L_OPERAND}, /* CLOSE_PAREN */ {0, 0}, /* EOF */ {0, 0}, @@ -1101,6 +1103,9 @@ reduce (cpp_reader *pfile, struct op *top, enum cpp_ttype op) continue; case CPP_QUERY: + /* COMMA and COLON should not reduce a QUERY operator. */ + if (op == CPP_COMMA || op == CPP_COLON) + return top; cpp_error (pfile, CPP_DL_ERROR, "'?' without following ':'"); return 0; |