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* [Bug c++/63207] New: ICE in expand_expr_real_l when instantiating a template with a lambda that captures a const variable with a dependent initializer
@ 2014-09-08 14:29 st at quanttec dot com
2014-10-10 8:53 ` [Bug c++/63207] [5 regression] " paolo.carlini at oracle dot com
0 siblings, 1 reply; 2+ messages in thread
From: st at quanttec dot com @ 2014-09-08 14:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63207
Bug ID: 63207
Summary: ICE in expand_expr_real_l when instantiating a
template with a lambda that captures a const variable
with a dependent initializer
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: st at quanttec dot com
Compiling the following following code with the current trunk GCC results in an
ICE.
template <typename T>
struct Base {
T value;
};
template <typename T>
struct Test : Base<T> {
T test() {
const int x = this->value;
return ([&]{ return x; })();
}
};
int main() {
Test<int> t;
t.value = 0;
return t.test();
}
g++ test.cpp --std=c++11 -Wall
test.cpp: In lambda function:
test.cpp:10:28: warning: ‘x’ is used uninitialized in this function
[-Wuninitialized]
return ([&]{ return x; })();
^
test.cpp:9:15: note: ‘x’ was declared here
const int x = this->value;
^
test.cpp:10:28: internal compiler error: in expand_expr_real_1, at expr.c:9517
return ([&]{ return x; })();
^
0x8c96ba expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/gcc/expr.c:9517
0x8d0dea store_expr(tree_node*, rtx_def*, int, bool)
../../gcc/gcc/expr.c:5338
0x8d8e4b expand_assignment(tree_node*, tree_node*, bool)
../../gcc/gcc/expr.c:5124
0x7e3b33 expand_gimple_stmt_1
../../gcc/gcc/cfgexpand.c:3274
0x7e3b33 expand_gimple_stmt
../../gcc/gcc/cfgexpand.c:3376
0x7e99d3 expand_gimple_basic_block
../../gcc/gcc/cfgexpand.c:5215
0x7eb86f execute
../../gcc/gcc/cfgexpand.c:5821
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/63196] [5.0 regression] FAIL: g++.dg/torture/pr57140.C -O3 -fomit-frame-pointer (internal compiler error)
Date: Mon, 08 Sep 2014 14:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idc196
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/63207] [5 regression] ICE in expand_expr_real_l when instantiating a template with a lambda that captures a const variable with a dependent initializer
2014-09-08 14:29 [Bug c++/63207] New: ICE in expand_expr_real_l when instantiating a template with a lambda that captures a const variable with a dependent initializer st at quanttec dot com
@ 2014-10-10 8:53 ` paolo.carlini at oracle dot com
0 siblings, 0 replies; 2+ messages in thread
From: paolo.carlini at oracle dot com @ 2014-10-10 8:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63207
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Blocks| |54367
Resolution|--- |FIXED
Target Milestone|--- |5.0
--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed then.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-09-08 14:29 [Bug c++/63207] New: ICE in expand_expr_real_l when instantiating a template with a lambda that captures a const variable with a dependent initializer st at quanttec dot com
2014-10-10 8:53 ` [Bug c++/63207] [5 regression] " paolo.carlini at oracle dot com
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