Instead of emitting an initialized variable in .data at compile time, gcc-4.2.0
emits a variable in .bss and a static constructor to initialize the variable at
run time. This is a regression from previous gcc versions.
Example code:
class T
{
static void (*handler)();
static void func() {};
};
void (*T::handler)() = func;
int main()
{
T t;
return 0;
}
gcc version 4.2.0 20060908 (experimental) emits:
08048416 t global constructors keyed to _ZN1T7handlerE
08049664 B T::handler
4.1.1 and 3.4.6 emit:
0804962c D T::handler
--
Summary: Static constructor emitted instead of initialized
variable
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: us15 at os dot inf dot tu-dresden dot de
GCC build triplet: i486-slackware-linux
GCC host triplet: i486-slackware-linux
GCC target triplet: i486-slackware-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28991
