optimization/4490: gcc 3.0.1 segfaults while compiling pack_isam.c of mysql

[rodrigc@gcc.gnu.org]

Synopsis: gcc 3.0.1 segfaults while compiling pack_isam.c of mysql

State-Changed-From-To: open->analyzed
State-Changed-By: rodrigc
State-Changed-When: Sat Dec  1 18:06:18 2001
State-Changed-Why:
    Reproduced error from Volker's simplified testcase.
    Error occurred in gcc 3.1 and gcc 3.0 branches.
    
    Running cc1plus in the debugger results in:
    
    Program received signal SIGSEGV, Segmentation fault.
    0x08229906 in ix86_constant_alignment (exp=0x40177dc0, align=32)
        at config/i386/i386.c:10601
    10601         if (TYPE_MODE (TREE_TYPE (exp)) == DFmode && align < 64)
    
    where exp is NULL.

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