<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Segfault in compiler while processing ternary operator with void arguments" href="https://bugs.freedesktop.org/show_bug.cgi?id=85252#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Segfault in compiler while processing ternary operator with void arguments" href="https://bugs.freedesktop.org/show_bug.cgi?id=85252">bug 85252</a> from <a class="email" href="mailto:gauber_r@epita.fr" title="Renaud Gaubert <gauber_r@epita.fr>"> Renaud Gaubert</a> <pre>(In reply to Ian Romanick from <a href="show_bug.cgi?id=85252#c0">comment #0</a>) > Created <a href="attachment.cgi?id=108126" name="attach_108126" title="Test case">attachment 108126</a> <a href="attachment.cgi?id=108126&action=edit" title="Test case">[details]</a> > Test case > > The attached test (also sent to the piglit list) segfaults in ast_to_hir. > gdb output below. > > Program received signal SIGSEGV, Segmentation fault. > 0x00007ffff3c429b3 in ast_expression::do_hir (this=0xae4738, > instructions=0xa4dc80, state=0xab6ef8, needs_rvalue=<optimized out>) > at ../../src/glsl/ast_to_hir.cpp:1574 > 1574 if ((!apply_implicit_conversion(op[1]->type, op[2], state) > Missing separate debuginfos, use: debuginfo-install > expat-2.1.0-4.fc18.x86_64 glibc-2.16-34.fc18.x86_64 > libgcc-4.7.2-8.fc18.x86_64 libstdc++-4.7.2-8.fc18.x86_64 > mesa-libGLU-9.0.0-1.fc18.x86_64 systemd-libs-201-2.fc18.9.x86_64 > (gdb) bt > #0 0x00007ffff3c429b3 in ast_expression::do_hir (this=0xae4738, > instructions=0xa4dc80, state=0xab6ef8, needs_rvalue=<optimized out>) > at ../../src/glsl/ast_to_hir.cpp:1574 > #1 0x00007ffff3c44663 in ast_expression_statement::hir (this=<optimized > out>, > instructions=<optimized out>, state=<optimized out>) > at ../../src/glsl/ast_to_hir.cpp:1829 > #2 0x00007ffff3c446af in ast_compound_statement::hir (this=0xae4858, > instructions=0xa4dc80, state=0xab6ef8) > at ../../src/glsl/ast_to_hir.cpp:1845 > #3 0x00007ffff3c46a61 in ast_function_definition::hir (this=0xae48d8, > instructions=<optimized out>, state=0xab6ef8) > at ../../src/glsl/ast_to_hir.cpp:4239 > #4 0x00007ffff3c414c0 in _mesa_ast_to_hir (instructions=0xa9cd78, > state=0xab6ef8) at ../../src/glsl/ast_to_hir.cpp:100 > #5 0x00007ffff3c97ffb in _mesa_glsl_compile_shader ( > ctx=ctx@entry=0x7ffff3963038, shader=shader@entry=0xa9d5e8, > dump_ast=dump_ast@entry=false, dump_hir=dump_hir@entry=false) > at ../../src/glsl/glsl_parser_extras.cpp:1465 > #6 0x00007ffff3af7fcc in compile_shader (ctx=0x7ffff3963038, > shaderObj=<optimized out>) at ../../src/mesa/main/shaderapi.c:852 > #7 0x00007ffff7cfc75f in stub_glCompileShader (shader=1) > at tests/util/piglit-dispatch-gen.c:6375 > #8 0x0000000000405598 in compile_glsl (target=35633) > at tests/shaders/shader_runner.c:326 > #9 0x00000000004061b7 in leave_state (state=vertex_shader, > line=0xaa4840 "[fragment shader]\n\nvarying vec4 c;\nuniform bool > b;\n\nvoid good(void)\n{\n gl_FragColor = c;\n}\n\nvoid bad(void)\n{\n > gl_FragColor = c + vec4(0, 0, 1, 0);\n}\n\nvoid main()\n{\n b ? good() : > bad();\n}\n\n[te"...) at tests/shaders/shader_runner.c:706 > #10 0x00000000004067f9 in process_test_script ( > script_name=0x7fffffffe25c > "tests/spec/glsl-1.10/execution/void-ternary.shader_test") at > tests/shaders/shader_runner.c:900 > #11 0x000000000040b2a9 in piglit_init (argc=2, argv=0x7fffffffded8) > at tests/shaders/shader_runner.c:2685 > #12 0x00007ffff7d87224 in run_test (gl_fw=0x612010, argc=2, > argv=0x7fffffffded8) > at tests/util/piglit-framework-gl/piglit_winsys_framework.c:72 > #13 0x00007ffff7d6c86b in piglit_gl_test_run (argc=2, argv=0x7fffffffded8, > config=0x7fffffffdda0) at tests/util/piglit-framework-gl.c:151 > #14 0x0000000000404ef2 in main (argc=2, argv=0x7fffffffded8) > at tests/shaders/shader_runner.c:60 This should be fixed with the following proposed patch on mesa-dev: <a href="http://lists.freedesktop.org/archives/mesa-dev/2015-July/088312.html">http://lists.freedesktop.org/archives/mesa-dev/2015-July/088312.html</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>