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authorJason Merrill <jason@redhat.com>2010-01-20 16:30:28 -0500
committerJason Merrill <jason@gcc.gnu.org>2010-01-20 16:30:28 -0500
commit1f4a7a481f5d76f2932c69f17adffd6bc37add04 (patch)
treea4b4963f20e444996f74308e7fec8b1636796268 /gcc
parente4672ccdb366be7135f3e931c710df0ffbc46d1d (diff)
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re PR c++/41920 ([C++0x] Invalid 'unused parameter' warning for parameters used in lambdas)
PR c++/41920 * semantics.c (build_lambda_object): Call mark_used on captured variables. From-SVN: r156085
Diffstat (limited to 'gcc')
-rw-r--r--gcc/cp/ChangeLog4
-rw-r--r--gcc/cp/semantics.c3
-rw-r--r--gcc/testsuite/ChangeLog3
-rw-r--r--gcc/testsuite/g++.dg/cpp0x/lambda/lambda-warn1.C8
4 files changed, 18 insertions, 0 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 7269838..828f4b0 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,9 @@
2010-01-20 Jason Merrill <jason@redhat.com>
+ PR c++/41920
+ * semantics.c (build_lambda_object): Call mark_used on captured
+ variables.
+
PR c++/40750
* decl.c (grokdeclarator): Clear type_quals for a member function
declared using a typedef. Don't complain about adding cv-quals
diff --git a/gcc/cp/semantics.c b/gcc/cp/semantics.c
index fa3ecda..1545443 100644
--- a/gcc/cp/semantics.c
+++ b/gcc/cp/semantics.c
@@ -5408,6 +5408,9 @@ build_lambda_object (tree lambda_expr)
tree field = TREE_PURPOSE (node);
tree val = TREE_VALUE (node);
+ if (DECL_P (val))
+ mark_used (val);
+
/* Mere mortals can't copy arrays with aggregate initialization, so
do some magic to make it work here. */
if (TREE_CODE (TREE_TYPE (field)) == ARRAY_TYPE)
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index db9bb35..99c5614 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
2010-01-20 Jason Merrill <jason@redhat.com>
+ PR c++/41920
+ * g++.dg/cpp0x/lambda/lambda-warn1.C: New.
+
PR c++/40750
* g++.dg/parse/fn-typedef1.C: New.
* g++.dg/other/cv_quals.C: Adjust.
diff --git a/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-warn1.C b/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-warn1.C
new file mode 100644
index 0000000..b384d5c
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-warn1.C
@@ -0,0 +1,8 @@
+// PR c++/41920
+// { dg-options "-std=c++0x -Wall -Wextra" }
+
+int foo(int i)
+{
+ auto bar = [=](){ return i; };
+ return bar();
+}