[Bug 910937] [NEW] gcc crashes in simplify_subreg:5375

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GCC optimizer crashes on compiling attached code. expected it to finish
compilation without errors, as happens when not passing optimizer flags
to it.

compiled with gcc -o david2 david2.c -std=c99 -O3

also crashes on -O2, -O1, -O, -Os.

Using ubuntu 11.10 (64 bit) on intel core i3.

gcc --version output:
gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1

Been unable to simplify code that causes bug.

** Affects: gcc-defaults (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment crash gcc optimizer
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gcc crashes in simplify_subreg:5375
https://bugs.launchpad.net/bugs/910937
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