[Bug c/37183] New: ice in df_ref_chain_change_bb
regehr at cs dot utah dot edu
gcc-bugzilla@gcc.gnu.org
Thu Aug 21 02:24:00 GMT 2008
This is seen using r139367 on Ubuntu Hardy on ia32. Also see bug 36984.
regehr@john-home:~/volatile/tmp9$ current-gcc -O3 small.c
small.c: In function Âfunc_2Â:
small.c:24: internal compiler error: in df_ref_chain_change_bb, at
df-scan.c:1828
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
regehr@john-home:~/volatile/tmp9$ current-gcc -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../configure --program-prefix=current-
--enable-languages=c,c++ --prefix=/home/regehr : (reconfigured) ../configure
--program-prefix=current- --enable-languages=c,c++ --prefix=/home/regehr :
(reconfigured) ../configure --program-prefix=current- --enable-languages=c,c++
--prefix=/home/regehr
Thread model: posix
gcc version 4.4.0 20080821 (experimental) (GCC)
regehr@john-home:~/volatile/tmp9$ cat small.c
typedef signed char int8_t;
typedef int int32_t;
typedef unsigned short int uint16_t;
typedef unsigned int uint32_t;
static inline unsigned long int
div_rhs (long int rhs)
{
if (rhs)
return 1;
return rhs;
}
uint32_t g_65;
int32_t g_122;
int32_t func_64 (uint32_t p_66, uint16_t p_67);
int32_t func_86 (uint16_t p_87);
int32_t func_88 (uint16_t p_89);
int32_t
func_2 (int8_t p_4)
{
int32_t l_450;
for (l_450 = 0; (l_450 < 8); ++l_450)
func_43 (func_60 (func_64 (func_86 (1), 1), 1), 1, 1);
}
int32_t
func_64 (uint32_t p_66, uint16_t p_67)
{
for (g_65 = 0; 0; ++g_65)
{
}
}
int32_t
func_86 (uint16_t p_87)
{
func_88 (g_122);
}
int32_t
func_88 (uint16_t p_89)
{
if (0 / div_rhs (func_91 (1, 1)))
{
}
else if (p_89)
for (g_65 = 1; 1; g_65 -= 1)
return 1;
}
--
Summary: ice in df_ref_chain_change_bb
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: regehr at cs dot utah dot edu
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=37183
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