diff options
| author | Mark Mitchell <mark@codesourcery.com> | 2004-12-22 18:00:39 +0000 |
|---|---|---|
| committer | Mark Mitchell <mmitchel@gcc.gnu.org> | 2004-12-22 18:00:39 +0000 |
| commit | dfb5c52315ecc5b6ebabf2d7cb3d3d69f35a378b (patch) | |
| tree | 92d85ea737af3ab701ec3aa12c9d0ae5763ee5c1 /gcc/cp/rtti.c | |
| parent | 606145e4e0e54d412059033a6261c53bf11d7b6d (diff) | |
| download | gcc-dfb5c52315ecc5b6ebabf2d7cb3d3d69f35a378b.zip gcc-dfb5c52315ecc5b6ebabf2d7cb3d3d69f35a378b.tar.gz gcc-dfb5c52315ecc5b6ebabf2d7cb3d3d69f35a378b.tar.bz2 | |
re PR c++/18464 (error message about "non-lvalue in unary '&'" when using ?: operator)
PR c++/18464
* call.c (build_this): In templates, do not bother with
build_unary_op.
* typeck.c (unary_complex_lvalue): In a template, always refuse
simplifications.
PR c++/18492
* cp-gimplify.c (cp_genericize): Relax assertion.
PR c++/11224
* cvt.c (convert_to_void): Warn about unused values.
PR c++/18257
* rtti.c (emit_support_tinfos): On systems without weak symbols,
emit the runtime library type-info objects as non-COMDAT.
PR c++/18464
* g++.dg/template/cond5.C: New test.
PR c++/18492
* g++.dg/inherit/thunk3.C: New test.
PR c++/11224
* g++.dg/warn/Wunused-9.C: New test.
From-SVN: r92491
Diffstat (limited to 'gcc/cp/rtti.c')
| -rw-r--r-- | gcc/cp/rtti.c | 42 |
1 files changed, 26 insertions, 16 deletions
diff --git a/gcc/cp/rtti.c b/gcc/cp/rtti.c index c113e1c..6c92d19 100644 --- a/gcc/cp/rtti.c +++ b/gcc/cp/rtti.c @@ -1345,22 +1345,32 @@ emit_support_tinfos (void) for (ix = 0; fundamentals[ix]; ix++) { tree bltn = *fundamentals[ix]; - tree bltn_ptr = build_pointer_type (bltn); - tree bltn_const_ptr = build_pointer_type - (build_qualified_type (bltn, TYPE_QUAL_CONST)); - tree tinfo; - - tinfo = get_tinfo_decl (bltn); - TREE_USED (tinfo) = 1; - TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (tinfo)) = 1; - - tinfo = get_tinfo_decl (bltn_ptr); - TREE_USED (tinfo) = 1; - TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (tinfo)) = 1; - - tinfo = get_tinfo_decl (bltn_const_ptr); - TREE_USED (tinfo) = 1; - TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (tinfo)) = 1; + tree types[3] = { + bltn, + build_pointer_type (bltn), + build_pointer_type (build_qualified_type (bltn, TYPE_QUAL_CONST)) + }; + int i; + + for (i = 0; i < 3; ++i) + { + tree tinfo; + tinfo = get_tinfo_decl (types[i]); + TREE_USED (tinfo) = 1; + mark_needed (tinfo); + /* The C++ ABI requires that these objects be COMDAT. But, + On systems without weak symbols, initialized COMDAT + objects are emitted with internal linkage. (See + comdat_linkage for details.) Since we want these objects + to have external linkage so that copies do not have to be + emitted in code outside the runtime library, we make them + non-COMDAT here. */ + if (!flag_weak) + { + gcc_assert (TREE_PUBLIC (tinfo) && !DECL_COMDAT (tinfo)); + DECL_INTERFACE_KNOWN (tinfo) = 1; + } + } } } |