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-rw-r--r--gcc/cp/ChangeLog6
-rw-r--r--gcc/cp/pt.c13
-rw-r--r--gcc/testsuite/ChangeLog5
-rw-r--r--gcc/testsuite/g++.dg/warn/Wparentheses-3.C13
4 files changed, 33 insertions, 4 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index eb271e5b2b6..5ce9af30f2a 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2004-08-19 Joseph S. Myers <jsm@polyomino.org.uk>
+
+ PR c++/17041
+ * pt.c (tsubst_copy, tsubst_copy_and_build): Copy TREE_NO_WARNING
+ from input for MODOP_EXPR.
+
2004-08-18 Mark Mitchell <mark@codesourcery.com>
* pt.c (dependent_template_p): Fix typo in commment.
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 4107d1ca1c6..f4e9362ff1b 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -7667,6 +7667,7 @@ tsubst_copy (tree t, tree args, tsubst_flags_t complain, tree in_decl)
(code, tsubst_copy (TREE_OPERAND (t, 0), args, complain, in_decl),
tsubst_copy (TREE_OPERAND (t, 1), args, complain, in_decl),
tsubst_copy (TREE_OPERAND (t, 2), args, complain, in_decl));
+ TREE_NO_WARNING (r) = TREE_NO_WARNING (t);
return r;
}
@@ -8331,10 +8332,14 @@ tsubst_copy_and_build (tree t,
return cxx_sizeof_or_alignof_expr (op1, TREE_CODE (t));
case MODOP_EXPR:
- return build_x_modify_expr
- (RECUR (TREE_OPERAND (t, 0)),
- TREE_CODE (TREE_OPERAND (t, 1)),
- RECUR (TREE_OPERAND (t, 2)));
+ {
+ tree r = build_x_modify_expr
+ (RECUR (TREE_OPERAND (t, 0)),
+ TREE_CODE (TREE_OPERAND (t, 1)),
+ RECUR (TREE_OPERAND (t, 2)));
+ TREE_NO_WARNING (r) = TREE_NO_WARNING (t);
+ return r;
+ }
case ARROW_EXPR:
op1 = tsubst_non_call_postfix_expression (TREE_OPERAND (t, 0),
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 007f3dc36a2..02c9cc83f1a 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2004-08-19 Joseph S. Myers <jsm@polyomino.org.uk>
+
+ PR c++/17041
+ * g++.dg/Wparentheses-3.C: New test.
+
2004-08-19 Dorit Naishlos <dorit@il.ibm.com>
* gcc.dg/vect/vect-1.c: Remove xfail from i?86-*-* x86_64-*-* due
diff --git a/gcc/testsuite/g++.dg/warn/Wparentheses-3.C b/gcc/testsuite/g++.dg/warn/Wparentheses-3.C
new file mode 100644
index 00000000000..8781953b64a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wparentheses-3.C
@@ -0,0 +1,13 @@
+// Test that -Wparentheses does not give bogus warnings in the
+// presence of templates. Bug 17041.
+
+// { dg-do compile }
+// { dg-options "-Wparentheses" }
+
+template<int> struct A
+{
+ int i;
+ A() { if ((i = 0)) ; }
+};
+
+A<0> a;