[Bug c/38375] infinite loop on invalid struct redefinition

[anmol at freescale dot com]

------- Comment #3 from anmol at freescale dot com  2009-04-28 21:38 -------

 I tried reproducing on trunk and on gcc-4_4-branch; GCC does not loop forever:

gcc version 4.5.0 20090423 (experimental) [trunk revision 146648] (GCC)
------------------------------------------------------------------------
$ cat pr38375.c 
struct sqt13 {};
struct sqt13 {
  struct sqt13 x;
} y = { 3.0 };
$ ~/gcc-pure/tools/bin/powerpc-unknown-linux-gnu-gcc -v
Using built-in specs.
Target: powerpc-unknown-linux-gnu
Configured with: ../../gcc/configure --prefix=/home/anmol/gcc-pure/tools/
--build=powerpc-unknown-linux-gnu --target=powerpc-unknown-linux-gnu
--host=powerpc-unknown-linux-gnu --with-ppl=/home/anmol/gcc-pure/tools/
--with-cloog=/home/anmol/gcc-pure/tools/ --enable-checking : (reconfigured)
../../gcc/configure --prefix=/home/anmol/gcc-pure/tools/
--build=powerpc-unknown-linux-gnu --target=powerpc-unknown-linux-gnu
--host=powerpc-unknown-linux-gnu --with-ppl=/home/anmol/gcc-pure/tools/
--with-cloog=/home/anmol/gcc-pure/tools/ --enable-checking
build_alias=powerpc-unknown-linux-gnu host_alias=powerpc-unknown-linux-gnu
target_alias=powerpc-unknown-linux-gnu
--enable-languages=c,c++,fortran,java,objc --no-create --no-recursion
Thread model: posix
gcc version 4.5.0 20090423 (experimental) [trunk revision 146648] (GCC)
$ time ~/gcc-pure/tools/bin/powerpc-unknown-linux-gnu-gcc -c pr38375.c 
pr38375.c:2: error: redefinition of ‘struct sqt13’
pr38375.c:3: error: field ‘x’ has incomplete type

real    0m0.044s
user    0m0.027s
sys     0m0.009s
$ uname -a
Linux localhost.localdomain 2.6.27.5-117.fc10.ppc #1 Tue Nov 18 11:50:30 EST
2008 ppc ppc ppc GNU/Linux

gcc version 4.4.1 20090424 (prerelease) [gcc-4_4-branch revision 146746] (GCC)
-------------------------------------------------------------------------------
$ cat 38375.c
struct sqt13 {};
struct sqt13 {
  struct sqt13 x;
} y = { 3.0 };
$
/proj/ppc/sysperf/labhome/b07584/gcc-fsf-zero/tools/bin/powerpc-unknown-linux-gnu-gcc
-v
Using built-in specs.
Target: powerpc-unknown-linux-gnu
Configured with: ../../gcc/configure
--prefix=/proj/ppc/sysperf/labhome/b07584/gcc-fsf-zero//tools/
--build=powerpc-unknown-linux-gnu --target=powerpc-unknown-linux-gnu
--host=powerpc-unknown-linux-gnu
--with-ppl=/proj/ppc/sysperf/labhome/b07584/gcc-fsf-zero/tools/
--with-cloog=/proj/ppc/sysperf/labhome/b07584/gcc-fsf-zero/tools/
--enable-checking
Thread model: posix
gcc version 4.4.1 20090424 (prerelease) [gcc-4_4-branch revision 146746] (GCC) 
$ time
/proj/ppc/sysperf/labhome/b07584/gcc-fsf-zero/tools/bin/powerpc-unknown-linux-gnu-gcc
-c 38375.c
38375.c:2: error: redefinition of ‘struct sqt13’
38375.c:3: error: field ‘x’ has incomplete type

real    0m0.111s
user    0m0.030s
sys     0m0.029s
$ uname -a
Linux perf3farm0.am.freescale.net 2.6.27.5-117.fc10.ppc.smp #1 SMP Tue Nov 18
12:35:18 EST 2008 ppc ppc ppc GNU/Linux


-- 

anmol at freescale dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |anmol at freescale dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38375