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* [Bug c++/57817] New: g++ crashes on handling variadic template sizeof inside lambda funcion
@ 2013-07-04 1:42 lb-guilherme at live dot com
2013-07-04 8:32 ` [Bug c++/57817] " paolo.carlini at oracle dot com
0 siblings, 1 reply; 2+ messages in thread
From: lb-guilherme at live dot com @ 2013-07-04 1:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57817
Bug ID: 57817
Summary: g++ crashes on handling variadic template sizeof
inside lambda funcion
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: lb-guilherme at live dot com
The following code produces a crash on both GCC 4.7.3 and 4.8.1:
template <typename... T>
void f(T... a)
{
[&]{
int s = sizeof...(a);
}();
}
int main()
{
f();
}
This is the crash report from GCC 4.8.1:
test.cpp: In instantiation of 'f(T ...) [with T = {}]::__lambda0':
test.cpp:5:5: required from 'struct f(T ...) [with T = {}]::__lambda0'
test.cpp:7:5: required from 'void f(T ...) [with T = {}]'
test.cpp:12:5: required from here
test.cpp:6:19: internal compiler error: Segmentation fault
int s = sizeof...(a);
^
0x850d2f0 crash_signal
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/toplev.c:332
0x814f26b tsubst_copy
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:12114
0x8146ebf tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:14445
0x814ac4a tsubst_expr
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:13385
0x8151246 tsubst_pack_expansion
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:9475
0x814f0ed tsubst_copy
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:12263
0x814843c tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:14571
0x814ac4a tsubst_expr
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:13385
0x814c4ed tsubst_expr
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:12943
0x814b98f tsubst_expr
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:13040
0x814b98f tsubst_expr
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:13040
0x814a8ce instantiate_decl(tree_node*, int, bool)
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:18920
0x815e7ed instantiate_class_template_1
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:9015
0x815e7ed instantiate_class_template(tree_node*)
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:9083
0x81ad52b complete_type(tree_node*)
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/typeck.c:131
0x8147703 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:14542
0x8147cfb tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:13951
0x814ac4a tsubst_expr
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:13385
0x814b31a tsubst_expr
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:12864
0x814b4dc tsubst_expr
/opt/mxe/tmp-gcc/gcc-4.8.1/gcc/cp/pt.c:12850
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/57817] g++ crashes on handling variadic template sizeof inside lambda funcion
2013-07-04 1:42 [Bug c++/57817] New: g++ crashes on handling variadic template sizeof inside lambda funcion lb-guilherme at live dot com
@ 2013-07-04 8:32 ` paolo.carlini at oracle dot com
0 siblings, 0 replies; 2+ messages in thread
From: paolo.carlini at oracle dot com @ 2013-07-04 8:32 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57817
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Dup.
*** This bug has been marked as a duplicate of bug 55914 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-07-04 1:42 [Bug c++/57817] New: g++ crashes on handling variadic template sizeof inside lambda funcion lb-guilherme at live dot com
2013-07-04 8:32 ` [Bug c++/57817] " paolo.carlini at oracle dot com
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