[Bug middle-end/55142] [4.8 Regression] internal compiler error: in plus_constant, at explow.c:88

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55142



--- Comment #18 from H.J. Lu <hjl.tools at gmail dot com> 2012-11-02 23:09:19 
UTC ---

(gdb) disass $pc - 19, +25

Dump of assembler code from 0xf7dddc7a to 0xf7dddc93:

   0xf7dddc7a <dl_main+5210>:    mov    %r8d,%esi

   0xf7dddc7d <dl_main+5213>:    sub    %eax,%esi

   0xf7dddc7f <dl_main+5215>:    cmp    $0xa,%esi

   0xf7dddc82 <dl_main+5218>:    ja     0xf7ddd431 <dl_main+3089>

   0xf7dddc88 <dl_main+5224>:    neg    %eax

   0xf7dddc8a <dl_main+5226>:    lea    (%rcx,%rax,4),%eax

=> 0xf7dddc8d <dl_main+5229>:    mov    %edx,-0x40000300(%rax)

End of assembler dump.

(gdb) p info

$4 = (Elf32_Dyn **) 0xf7ffdc38

(gdb) p/x $rax

$5 = 0x37ffe064

(gdb) p/x $rax -0x40000300

$6 = 0xfffffffff7ffdd64

(gdb) 



-0x40000300(%rax) should be zero-extended from SImode to DImode.