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re PR c++/18047 (Wrong precedence between equality (==, !=) and < operators)

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2004-10-19  Paolo Bonzini  <bonzini@gnu.org>

	PR c++/18047
	* parser.c (enum cp_parser_prec): Give relational expressions
	a higher precedence than equality expressions.

2004-10-19  Paolo Bonzini  <bonzini@gnu.org>

	PR c++/18047

	* g++.dg/parse/expr3.C: New test.

From-SVN: r89272
This commit is contained in:
Paolo Bonzini 2004-10-19 12:40:31 +00:00 committed by Paolo Bonzini
parent f94cef0a66
commit 6947512352
4 changed files with 45 additions and 1 deletions
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6
gcc/cp/ChangeLog
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@ -1,3 +1,9 @@
2004-10-19 Paolo Bonzini <bonzini@gnu.org>
PR c++/18047
* parser.c (enum cp_parser_prec): Give relational expressions
a higher precedence than equality expressions.
2004-10-15 Nathan Sidwell <nathan@codesourcery.com>
* cp-tree.h (UNIQUELY_DERIVED_FROM_P): Adjust lookup_base call.

2
gcc/cp/parser.c
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@ -1074,8 +1074,8 @@ enum cp_parser_prec
PREC_INCLUSIVE_OR_EXPRESSION,
PREC_EXCLUSIVE_OR_EXPRESSION,
PREC_AND_EXPRESSION,
PREC_RELATIONAL_EXPRESSION,
PREC_EQUALITY_EXPRESSION,
PREC_RELATIONAL_EXPRESSION,
PREC_SHIFT_EXPRESSION,
PREC_ADDITIVE_EXPRESSION,
PREC_MULTIPLICATIVE_EXPRESSION,

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2004-10-19 Paolo Bonzini <bonzini@gnu.org>
PR c++/18047
* g++.dg/parse/expr3.C: New test.
2004-10-18 Eric Botcazou <ebotcazou@libertysurf.fr>
* gcc.dg/smod-1.c: New test.

32
gcc/testsuite/g++.dg/parse/expr3.C Normal file
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@ -0,0 +1,32 @@
/* { dg-do compile } */
/* PR/18047 Test that operators have the right precedence. */
/* by bonzini@gnu.org */
#define test(lower, higher, a, b, c, d) \
test_(lower, higher, a, b, c, d, __LINE__)
#define test_(lower, higher, a, b, c, d, line)\
test__(lower, higher, a, b, c, d, line)
/* The first declaration tests that the parentheses are added correctly
by the expression parser. The second tests that the two possible
orderings of precedences do give different results. */
#define test__(lower, higher, a, b, c, d, line) \
char test##line[ \
(a higher b lower c higher d) == \
((a higher b) lower (c higher d)) \
? 1 : -1]; \
char doublecheck##line[ \
(a higher b lower c higher d) == \
(a higher (b lower c) higher d) \
? -1 : 1];
test (||, &&, 1, 1, 0, 0)
test (&&, |, 5, 1, 1, 19)
test (|, ^, 1, 2, 2, 1)
test (^, &, 1, 3, 2, 6)
test (&, ==, 1, 3, 2, 0)
test (==, <, 2, 0, 0, 0)
test (<, <<, 2, 3, 6, 8)
test (<<, +, 2, 3, 4, 5)
test (+, *, 2, 6, 9, 13)