System environment:
-- chipset: ATI RV530
-- system architecture: i686
-- libdrm-dev: 2.4.26-1ubuntu1
-- mesa: ccecc08f79afc020c8c0acface04a8e53e3a7c32 (master)
-- kernel version: 3.0.0-8-generic
-- Linux distribution: Ubuntu 11.10 i386

Run piglit glsl-vs-varying-array test.

$ ./bin/shader_runner -auto tests/shaders/glsl-vs-varying-array.shader_test
r300: DRM version: 2.10.0, Name: ATI RV530, ID: 0x71c5, GB: 1, Z: 2
r300: GART size: 509 MB, VRAM size: 128 MB
r300: AA compression RAM: YES, Z compression RAM: YES, HiZ RAM: YES
src/mesa/state_tracker/st_glsl_to_tgsi.cpp:3176:copy_propagate: Assertion `inst->dst.file != PROGRAM_TEMPORARY || inst->dst.index < this->next_temp' failed.

(gdb) bt
#0  0x011be647 in _debug_assert_fail (
    expr=0x1c3ff34 "inst->dst.file != PROGRAM_TEMPORARY || inst->dst.index < this->next_temp", file=0x1c3f364 "src/mesa/state_tracker/st_glsl_to_tgsi.cpp", 
    line=3176, function=0x1c40730 "copy_propagate")
    at src/gallium/auxiliary/util/u_debug.c:282
#1  0x01aa9749 in glsl_to_tgsi_visitor::copy_propagate (this=0x842f140)
    at src/mesa/state_tracker/st_glsl_to_tgsi.cpp:3175
#2  0x01aae803 in get_mesa_program (ctx=0x8285980, shader_program=0x8497068, 
    shader=0x84b8088) at src/mesa/state_tracker/st_glsl_to_tgsi.cpp:4733
#3  0x01aaee49 in st_link_shader (ctx=0x8285980, prog=0x8497068)
    at src/mesa/state_tracker/st_glsl_to_tgsi.cpp:4891
#4  0x019bb101 in _mesa_glsl_link_shader (ctx=0x8285980, prog=0x8497068)
    at src/mesa/program/ir_to_mesa.cpp:3423
#5  0x0198307c in link_program (ctx=0x8285980, program=3)
    at src/mesa/main/shaderapi.c:877
#6  0x0198459c in _mesa_LinkProgramARB (programObj=3)
    at src/mesa/main/shaderapi.c:1461
#7  0x0806bea4 in link_and_use_shaders ()
#8  0x0806dfde in piglit_init ()
#9  0x0806ec71 in main ()
(gdb) frame 1
#1  0x01aa9749 in glsl_to_tgsi_visitor::copy_propagate (this=0x842f140)
    at src/mesa/state_tracker/st_glsl_to_tgsi.cpp:3175
3175	      assert(inst->dst.file != PROGRAM_TEMPORARY
(gdb) l
3170	   int level = 0;
3171	
3172	   foreach_iter(exec_list_iterator, iter, this->instructions) {
3173	      glsl_to_tgsi_instruction *inst = (glsl_to_tgsi_instruction *)iter.get();
3174	
3175	      assert(inst->dst.file != PROGRAM_TEMPORARY
3176	             || inst->dst.index < this->next_temp);
3177	
3178	      /* First, do any copy propagation possible into the src regs. */
3179	      for (int r = 0; r < 3; r++) {
(gdb) print inst->dst.file
$1 = PROGRAM_TEMPORARY
(gdb) print inst->dst.index
$2 = 3
(gdb) print this->next_temp
$3 = 3