From 39ffbac9119e258b475386c959ff50af31a270b4 Mon Sep 17 00:00:00 2001 From: Volker Reichelt Date: Sun, 30 Mar 2008 21:58:43 +0000 Subject: [PATCH] re PR c/35748 (ICE with cast to invalid union) PR c/35748 * c-typeck.c (build_c_cast): Skip invalid fields in unions. * gcc.dg/union-cast-4.c: New test. From-SVN: r133737 --- gcc/ChangeLog | 5 +++++ gcc/c-typeck.c | 5 +++-- gcc/testsuite/ChangeLog | 5 +++++ gcc/testsuite/gcc.dg/union-cast-4.c | 8 ++++++++ 4 files changed, 21 insertions(+), 2 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/union-cast-4.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a0e29ccedb1..d278b6c555f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2008-03-30 Volker Reichelt + + PR c/35748 + * c-typeck.c (build_c_cast): Skip invalid fields in unions. + 2008-03-30 H.J. Lu PR target/35757 diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c index 4d476c5d4dd..a457f6a2283 100644 --- a/gcc/c-typeck.c +++ b/gcc/c-typeck.c @@ -3628,8 +3628,9 @@ build_c_cast (tree type, tree expr) tree field; for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field)) - if (comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (field)), - TYPE_MAIN_VARIANT (TREE_TYPE (value)))) + if (TREE_TYPE (field) != error_mark_node + && comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (field)), + TYPE_MAIN_VARIANT (TREE_TYPE (value)))) break; if (field) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 3f8205a65fb..e7e4b30824b 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2008-03-30 Volker Reichelt + + PR c/35748 + * gcc.dg/union-cast-4.c: New test. + 2008-03-30 H.J. Lu PR target/35757 diff --git a/gcc/testsuite/gcc.dg/union-cast-4.c b/gcc/testsuite/gcc.dg/union-cast-4.c new file mode 100644 index 00000000000..a1c98ba14ac --- /dev/null +++ b/gcc/testsuite/gcc.dg/union-cast-4.c @@ -0,0 +1,8 @@ +/* PR c/35748 */ + +union U { void x[1]; }; /* { dg-error "array of voids" } */ + +void foo() +{ + (union U)0; /* { dg-error "type not present" } */ +}