pre1.0.2: "warning: control reaches end of non-void function" bug ??

[Michael Roth]

Hi,

when you compile the following programm with gcc you will correctly get two
warnings about missing return values. But when you compile the same programm
with c++ or g++ the warning in main() is missing.
Bug or feature ? 


Tesprogramm "ret1.c"
-------------------------------------------------------------------------
int f()
{
}
int main()
{
}
-------------------------------------------------------------------------


Wrong output of "g++ -v -Wall -c ret1.c":
-------------------------------------------------------------------------
Reading specs from /usr/local/soft/egcs-pre1.0.2-980302/lib/gcc-lib/i586-pc-linux-gnu/egcs-2.90.25/specs
gcc version egcs-2.90.25 980302 (egcs-1.0.2 prerelease)
 /usr/local/soft/egcs-pre1.0.2-980302/lib/gcc-lib/i586-pc-linux-gnu/egcs-2.90.25/cpp -lang-c++ -v -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus -D__GNUC_MINOR__=90 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem(posi
x) -D__EXCEPTIONS -Wall -Di386 -Di586 -Asystem(unix) -Acpu(i386) -Amachine(i386) -D__i386__ -D__i586__ -Asystem(unix) -Acpu(i386) -Amachine(i386) ret1.c /tmp/cca22163.ii
GNU CPP version egcs-2.90.25 980302 (egcs-1.0.2 prerelease) (i386 Linux/ELF)
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/soft/egcs-pre1.0.2-980302/include/g++
 /usr/local/include
 /usr/local/soft/egcs-pre1.0.2-980302/i586-pc-linux-gnu/include
 /usr/local/soft/egcs-pre1.0.2-980302/lib/gcc-lib/i586-pc-linux-gnu/egcs-2.90.25/include
 /usr/include
End of search list.
 /usr/local/soft/egcs-pre1.0.2-980302/lib/gcc-lib/i586-pc-linux-gnu/egcs-2.90.25/cc1plus /tmp/cca22163.ii -quiet -dumpbase ret1.cc -Wall -version -o /tmp/cca22163.s
GNU C++ version egcs-2.90.25 980302 (egcs-1.0.2 prerelease) (i586-pc-linux-gnu) compiled by GNU C version egcs-2.90.25 980302 (egcs-1.0.2 prerelease).
ret1.c: In function `int f()':
ret1.c:3: warning: control reaches end of non-void function `f()'
 as -V -Qy -o ret1.o /tmp/cca22163.s
GNU assembler version 2.8.1 (i686-pc-linux-gnu), using BFD version linux-2.8.1.0.1
-------------------------------------------------------------------------


Correct output of "gcc -v -Wall -c ret1.c":
-------------------------------------------------------------------------
Reading specs from /usr/local/soft/egcs-pre1.0.2-980302/lib/gcc-lib/i586-pc-linux-gnu/egcs-2.90.25/specs
gcc version egcs-2.90.25 980302 (egcs-1.0.2 prerelease)
 /usr/local/soft/egcs-pre1.0.2-980302/lib/gcc-lib/i586-pc-linux-gnu/egcs-2.90.25/cpp -lang-c -v -undef -D__GNUC__=2 -D__GNUC_MINOR__=90 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem(posix) -Wall -Di386 -Di586 -Asyst
em(unix) -Acpu(i386) -Amachine(i386) -D__i386__ -D__i586__ -Asystem(unix) -Acpu(i386) -Amachine(i386) ret1.c /tmp/cca22170.i
GNU CPP version egcs-2.90.25 980302 (egcs-1.0.2 prerelease) (i386 Linux/ELF)
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /usr/local/soft/egcs-pre1.0.2-980302/i586-pc-linux-gnu/include
 /usr/local/soft/egcs-pre1.0.2-980302/lib/gcc-lib/i586-pc-linux-gnu/egcs-2.90.25/include
 /usr/include
End of search list.
 /usr/local/soft/egcs-pre1.0.2-980302/lib/gcc-lib/i586-pc-linux-gnu/egcs-2.90.25/cc1 /tmp/cca22170.i -quiet -dumpbase ret1.c -Wall -version -o /tmp/cca22170.s
GNU C version egcs-2.90.25 980302 (egcs-1.0.2 prerelease) (i586-pc-linux-gnu) compiled by GNU C version egcs-2.90.25 980302 (egcs-1.0.2 prerelease).
ret1.c: In function `f':
ret1.c:3: warning: control reaches end of non-void function
ret1.c: In function `main':
ret1.c:6: warning: control reaches end of non-void function
 as -V -Qy -o ret1.o /tmp/cca22170.s
GNU assembler version 2.8.1 (i686-pc-linux-gnu), using BFD version linux-2.8.1.0.1
-------------------------------------------------------------------------


cu
		Michael