Configured with: ../sco/gcc-3.2.3/configure --prefix=/usr/local/gcc-3.2.3 --
enable-languages=c++ --with-gnu-as
Thread model: single
gcc version 3.2.3
System: SCO Unix 5.0.5
Compilation of source programs with declared but unitialised global data on the
SCO system seems to cause the program to grow in proportion with the size of
the data. Uninitialised data should be stored under BSS or the common section
of a program. This seems to be the case for Linux but not on SCO.
-----
Test program: foo.cpp
struct My_t {
char myData[2048];
};
My_t myArr[10240];
int main ()
{
return 0;
}
-----
Compilation: gcc -O -fconserve-space foo.cpp -lstdc++
Size listing (ls -l a.out) on SCO: 20977120
Size listing (ls -l a.out) on RedHat: 11341
However, converting the same program to a C standard and compiling with gcc on
SCO produces the expected object code size as follows:
-----
Test program: foo.c
struct My_t {
char myData[2048];
};
struct My_t myArr[10240];
int
main ()
{
return 0;
}
-----
Compilation: gcc foo.c
Size listing (ls -l a.out) on SCO: 5604
--
Summary: Large program size due to uninitialised global data
(SCO)
Product: gcc
Version: 3.2.3
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bygoh at genting dot com dot my
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18713
