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| author | Alexandre Oliva <aoliva@redhat.com> | 2019-03-15 13:56:55 +0000 |
|---|---|---|
| committer | Alexandre Oliva <aoliva@gcc.gnu.org> | 2019-03-15 13:56:55 +0000 |
| commit | ca7f909fba59f79d85f74ee0846bc9ed121ba7b2 (patch) | |
| tree | 161d051727d53d881f25c5dbea2f6177cdc476be /gcc/dwarf2out.c | |
| parent | d2025512b3fb357768d85ccde8e21f571481d00f (diff) | |
| download | gcc-ca7f909fba59f79d85f74ee0846bc9ed121ba7b2.zip gcc-ca7f909fba59f79d85f74ee0846bc9ed121ba7b2.tar.gz gcc-ca7f909fba59f79d85f74ee0846bc9ed121ba7b2.tar.bz2 | |
[PR88534] accept VAR_DECL in class literal template parms
P0732R2 / C++ 2a introduce class literals as template parameters. The
front-end uses VAR_DECLs constructed from such literals to bind the
template PARM_DECLs, but dwarf2out.c used to reject such VAR_DECLs.
Taking DECL_INITIAL from such VAR_DECLs enables the generation of
DW_AT_const_value for them, at least when the class literal can
actually be represented as such.
for gcc/ChangeLog
PR c++/88534
PR c++/88537
* dwarf2out.c (generic_parameter_die): Follow DECL_INITIAL of
VAR_DECL args.
for gcc/testsuite/ChangeLog
PR c++/88534
PR c++/88537
* g++.dg/cpp2a/pr88534.C: New.
* g++.dg/cpp2a/pr88537.C: New.
From-SVN: r269709
Diffstat (limited to 'gcc/dwarf2out.c')
| -rw-r--r-- | gcc/dwarf2out.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index d9cefd3..251fff7 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -13603,6 +13603,13 @@ generic_parameter_die (tree parm, tree arg, dw_die_ref tmpl_die = NULL; const char *name = NULL; + /* C++2a accepts class literals as template parameters, and var + decls with initializers represent them. The VAR_DECLs would be + rejected, but we can take the DECL_INITIAL constructor and + attempt to expand it. */ + if (arg && VAR_P (arg)) + arg = DECL_INITIAL (arg); + if (!parm || !DECL_NAME (parm) || !arg) return NULL; |