The following program:
void f(void)
{
void p(void)
{
__label__ l1;
void q(void)
{
goto l1;
}
l1:;
}
p();
}
int
main (void)
{
f();
return 0;
}
compiled using the following command line:
../gcc-lin/gcc/xgcc -B../gcc-lin/gcc/ c_jump2.c
gives me:
/tmp/ccSrSccf.o: In function `q.1137':
/tmp/ccSrSccf.o(.text+0x2d): undefined reference to `.L7'
collect2: ld returned 1 exit status
Output of ../gcc-lin/gcc/xgcc -B../gcc-lin/gcc/ -v:
Reading specs from ../gcc-lin/gcc/specs
Target: i686-pc-linux-gnu
Configured with: ../gcc-4.0.0/configure --enable-languages=c
Thread model: posix
gcc version 4.0.0
The program works when I use `-O2' or `-O3' option (apparently
it works in unit at a time mode and does not work in function at
a time mode).
The problem affects GNU Pascal, I found the above C program trying
to find out why I get the above error from Pascal programs.
--
Summary: Nonlocal gotos between nested functions cause undefined
labels in assembler output
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hebisch at math dot uni dot wroc dot pl
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21728
