* C++ PATCH for c++/61670 (ice-after-error with null DECL_SIZE)
@ 2015-03-25 13:46 Marek Polacek
2015-03-25 19:26 ` Jason Merrill
0 siblings, 1 reply; 2+ messages in thread
From: Marek Polacek @ 2015-03-25 13:46 UTC (permalink / raw)
To: GCC Patches, Jason Merrill
The following fixes an ICE on invalid code by checking that DECL_SIZE is
not null before feeding it to integer_zerop.
Bootstrapped/regtested on x86_64-linux, ok for trunk?
2015-03-25 Marek Polacek <polacek@redhat.com>
PR c++/61670
* class.c (remove_zero_width_bit_fields): Check for null DECL_SIZE.
* g++.dg/template/pr61670.C: New test.
diff --git gcc/cp/class.c gcc/cp/class.c
index 0518320..c2d4201 100644
--- gcc/cp/class.c
+++ gcc/cp/class.c
@@ -5434,7 +5434,8 @@ remove_zero_width_bit_fields (tree t)
DECL_INITIAL (*fieldsp).
check_bitfield_decl eventually sets DECL_SIZE (*fieldsp)
to that width. */
- && integer_zerop (DECL_SIZE (*fieldsp)))
+ && (DECL_SIZE (*fieldsp) == NULL_TREE
+ || integer_zerop (DECL_SIZE (*fieldsp))))
*fieldsp = DECL_CHAIN (*fieldsp);
else
fieldsp = &DECL_CHAIN (*fieldsp);
diff --git gcc/testsuite/g++.dg/template/pr61670.C gcc/testsuite/g++.dg/template/pr61670.C
index e69de29..d244efa 100644
--- gcc/testsuite/g++.dg/template/pr61670.C
+++ gcc/testsuite/g++.dg/template/pr61670.C
@@ -0,0 +1,9 @@
+// PR c++/61670
+// { dg-do compile }
+
+template <class>
+class A {
+ A: 0 // { dg-error "" }
+};
+
+A<int> a;
Marek
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: C++ PATCH for c++/61670 (ice-after-error with null DECL_SIZE)
2015-03-25 13:46 C++ PATCH for c++/61670 (ice-after-error with null DECL_SIZE) Marek Polacek
@ 2015-03-25 19:26 ` Jason Merrill
0 siblings, 0 replies; 2+ messages in thread
From: Jason Merrill @ 2015-03-25 19:26 UTC (permalink / raw)
To: Marek Polacek, GCC Patches
OK.
Jason
^ permalink raw reply [flat|nested] 2+ messages in thread
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2015-03-25 13:46 C++ PATCH for c++/61670 (ice-after-error with null DECL_SIZE) Marek Polacek
2015-03-25 19:26 ` Jason Merrill
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