https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81107
Bug ID: 81107
Summary: operator new(size_t) can't have hidden visibility
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: thomasanderson at google dot com
Target Milestone: ---
Created attachment 41559
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41559&action=edit
test.cpp
Compile the attached test.cpp with
$ g++ -fvisibility=hidden -nostdinc++ -std=c++11 -c test.cpp -o test.o
-fvisibility=hidden should make all symbols hidden, but operator new is not:
$ objdump -t test.o | grep _Znwm
0000000000000000 g F .text 000000000000000f _Znwm
000000000000000f g F .text 0000000000000013 .hidden _ZnwmRK9nothrow_t
Adding 'attribute((visibility("hidden")))' on operator new only raises an
error:
test.cpp: In function ‘void* operator new(size_t)’:
test.cpp:5:7: warning: ‘void* operator new(size_t)’: visibility attribute
ignored because it [-Wattributes]
void* operator new(size_t size) { return (void*)1; }
^
<built-in>:0:0: warning: conflicts with previous declaration here
[-Wattributes]
