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| author | Jason Merrill <jason@redhat.com> | 2011-10-19 18:29:15 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2011-10-19 18:29:15 -0400 |
| commit | 875bcfdbf412ba625cf9ee9e1bd6610c0ad5b5f8 (patch) | |
| tree | 4c9775c1197e68fdedd21754444fa1abc3c19c9a | |
| parent | f33fa066984c6f29eee20db130133354a5ec995c (diff) | |
| download | gcc-875bcfdbf412ba625cf9ee9e1bd6610c0ad5b5f8.zip gcc-875bcfdbf412ba625cf9ee9e1bd6610c0ad5b5f8.tar.gz gcc-875bcfdbf412ba625cf9ee9e1bd6610c0ad5b5f8.tar.bz2 | |
re PR c++/50793 (G++ doesn't value-initialize all members of non-trivial type in default argument)
PR c++/50793
* tree.c (bot_manip): Propagate AGGR_INIT_ZERO_FIRST.
From-SVN: r180227
| -rw-r--r-- | gcc/cp/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/cp/tree.c | 8 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/init/value9.C | 32 |
4 files changed, 48 insertions, 2 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index 3b5c14c..8e9bb4a 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,3 +1,8 @@ +2011-10-19 Jason Merrill <jason@redhat.com> + + PR c++/50793 + * tree.c (bot_manip): Propagate AGGR_INIT_ZERO_FIRST. + 2011-10-19 Roland Stigge <stigge@antcom.de> PR translation/49704 diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c index 75aa265..d023eb8 100644 --- a/gcc/cp/tree.c +++ b/gcc/cp/tree.c @@ -1879,8 +1879,12 @@ bot_manip (tree* tp, int* walk_subtrees, void* data) tree u; if (TREE_CODE (TREE_OPERAND (t, 1)) == AGGR_INIT_EXPR) - u = build_cplus_new (TREE_TYPE (t), TREE_OPERAND (t, 1), - tf_warning_or_error); + { + u = build_cplus_new (TREE_TYPE (t), TREE_OPERAND (t, 1), + tf_warning_or_error); + if (AGGR_INIT_ZERO_FIRST (TREE_OPERAND (t, 1))) + AGGR_INIT_ZERO_FIRST (TREE_OPERAND (u, 1)) = true; + } else u = build_target_expr_with_type (TREE_OPERAND (t, 1), TREE_TYPE (t), tf_warning_or_error); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 1239207..173f195 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2011-10-19 Jason Merrill <jason@redhat.com> + + PR c++/50793 + * g++.dg/init/value9.C: New. + 2011-10-19 Jakub Jelinek <jakub@redhat.com> * gcc.dg/torture/vshuf-32.inc: Add interleave permutations. diff --git a/gcc/testsuite/g++.dg/init/value9.C b/gcc/testsuite/g++.dg/init/value9.C new file mode 100644 index 0000000..4899bd8 --- /dev/null +++ b/gcc/testsuite/g++.dg/init/value9.C @@ -0,0 +1,32 @@ +// PR c++/50793 +// { dg-do run } + +struct NonTrivial +{ + NonTrivial() { } +}; + +struct S +{ + NonTrivial nt; + int i; +}; + +int f(S s) +{ + s.i = 0xdeadbeef; + return s.i; +} + +int g(S s = S()) +{ + return s.i; +} + +int main() +{ + f(S()); // make stack dirty + + if ( g() ) + __builtin_abort(); +} |