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C++ PATCH for c++/84664, ICE on invalid in lambda
- From: Marek Polacek <polacek at redhat dot com>
- To: Jason Merrill <jason at redhat dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Fri, 2 Mar 2018 18:37:37 +0100
- Subject: C++ PATCH for c++/84664, ICE on invalid in lambda
- Authentication-results: sourceware.org; auth=none
This patch fixes an ICE-on-invalid by checking the result of mark_rvalue_use,
similarly to perform_implicit_conversion_flags.
Bootstrapped/regtested on x86_64-linux, ok for trunk?
2018-03-02 Marek Polacek <polacek@redhat.com>
PR c++/84664
* typeck.c (cp_perform_integral_promotions): Check the result of
mark_rvalue_use.
* g++.dg/cpp0x/lambda/lambda-ice28.C: New test.
diff --git gcc/cp/typeck.c gcc/cp/typeck.c
index 0e7c63dd197..f535902231d 100644
--- gcc/cp/typeck.c
+++ gcc/cp/typeck.c
@@ -2161,6 +2161,8 @@ cp_perform_integral_promotions (tree expr, tsubst_flags_t complain)
tree promoted_type;
expr = mark_rvalue_use (expr);
+ if (error_operand_p (expr))
+ return error_mark_node;
/* [conv.prom]
diff --git gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice28.C gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice28.C
index e69de29bb2d..5fe32129744 100644
--- gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice28.C
+++ gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice28.C
@@ -0,0 +1,9 @@
+// PR c++/84664
+// { dg-do compile { target c++11 } }
+
+void
+foo ()
+{
+ auto &b = 1; // { dg-error "cannot bind" }
+ [] { b > 0; }; // { dg-error ".b. is not captured" }
+}
Marek