http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57691
Bug ID: 57691
Summary: freestanding libstdc++ has compile error
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: bernd.edlinger at hotmail dot de
Created attachment 30349
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30349&action=edit
Proposed fix for this problem
Hello,
I want to compile the gcc-4.8.1 in a freestanding environment (eCos)
but I encountered a compile error in libstdc++-v3/libsupc++/atexit_thread.cc:
../../../../gcc-4.8.1/libstdc++-v3/libsupc++/atexit_thread.cc: In function
'void {anonymous}::key_init()':
../../../../gcc-4.8.1/libstdc++-v3/libsupc++/atexit_thread.cc:87:21: error: no
matches converting function 'run' to type 'void (*)(...)
std::atexit (run);
^
../../../../gcc-4.8.1/libstdc++-v3/libsupc++/atexit_thread.cc:66:8: note:
candidates are: void {anonymous}::run()
void run ()
^
../../../../gcc-4.8.1/libstdc++-v3/libsupc++/atexit_thread.cc:58:8: note:
void {anonymous}::run(void*)
void run (void *p)
^
../../../../gcc-4.8.1/libstdc++-v3/libsupc++/atexit_thread.cc: In function 'int
__cxxabiv1::__cxa_thread_atexit(void (*)(void*), void*, void*)':
../../../../gcc-4.8.1/libstdc++-v3/libsupc++/atexit_thread.cc:109:20: error: no
matches converting function 'run' to type 'void (*)(...)'
std::atexit (run);
^
../../../../gcc-4.8.1/libstdc++-v3/libsupc++/atexit_thread.cc:66:8: note:
candidates are: void {anonymous}::run()
void run ()
^
../../../../gcc-4.8.1/libstdc++-v3/libsupc++/atexit_thread.cc:58:8: note:
void {anonymous}::run(void*)
void run (void *p)
^
The used config parameters are:
../gcc-4.8.1/configure --target=arm-eabi --prefix=/home/ed/gnu/arm-eabi
--with-newlib --enable-languages=c,c++ --disable-hosted-libstdcxx
--disable-__cxa_atexit
The compiler is simply right to complain about the ambiguity here:
The problem is the function atexit() that is declared in cstdlib
to take a parameter 'void (*)()' which means any parameter or nothing can
match.
now there are two global functions named run in this scope
one declared 'void run()' and one declared void run(void*)'.
The first one would be the correct choice.
To fix that I had to changemthe declaration of atexit() in cstdlib:
atexit(void (*)()) => atexit(void (*)(void))
which is consistent with glibc's atexit() declaraion in stdlib.h
furthermore the declaration of at_quick_exit() has the same bug.
