From: Danylo Piliaiev Date: Tue, 28 Jan 2020 14:30:55 +0000 (+0200) Subject: intel/compiler: Do not qsort zero sized array X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d5931f285be246be95683c2fb054694d89d07657;p=mesa.git intel/compiler: Do not qsort zero sized array ../src/intel/compiler/brw_nir_analyze_ubo_ranges.c:316:4: runtime error: null pointer passed as argument 1, which is declared to never be null #0 0x7f78f5916611 in brw_nir_analyze_ubo_ranges ../src/intel/compiler/brw_nir_analyze_ubo_ranges.c:316 #1 0x7f78f255c189 in brw_codegen_wm_prog ../src/mesa/drivers/dri/i965/brw_wm.c:97 #2 0x7f78f2565571 in brw_fs_precompile ../src/mesa/drivers/dri/i965/brw_wm.c:608 #3 0x7f78f24edd2c in brw_shader_precompile ../src/mesa/drivers/dri/i965/brw_link.cpp:56 #4 0x7f78f24f3af8 in brw_link_shader ../src/mesa/drivers/dri/i965/brw_link.cpp:381 #5 0x7f78f39a302a in _mesa_glsl_link_shader ../src/mesa/program/ir_to_mesa.cpp:3119 #6 0x7f78f3a43826 in create_new_program ../src/mesa/main/ff_fragment_shader.cpp:1133 #7 0x7f78f3a43d00 in _mesa_get_fixed_func_fragment_program ../src/mesa/main/ff_fragment_shader.cpp:1163 #8 0x7f78f325ddcd in update_program ../src/mesa/main/state.c:134 #9 0x7f78f325fe64 in _mesa_update_state_locked ../src/mesa/main/state.c:360 #10 0x7f78f32600f1 in _mesa_update_state ../src/mesa/main/state.c:394 #11 0x7f78f2b3e587 in clear ../src/mesa/main/clear.c:169 #12 0x7f78f2b3e587 in _mesa_Clear ../src/mesa/main/clear.c:242 Signed-off-by: Danylo Piliaiev Reviewed-by: Lionel Landwerlin Part-of: --- diff --git a/src/intel/compiler/brw_nir_analyze_ubo_ranges.c b/src/intel/compiler/brw_nir_analyze_ubo_ranges.c index 35b0c945343..bdf766159aa 100644 --- a/src/intel/compiler/brw_nir_analyze_ubo_ranges.c +++ b/src/intel/compiler/brw_nir_analyze_ubo_ranges.c @@ -313,8 +313,10 @@ brw_nir_analyze_ubo_ranges(const struct brw_compiler *compiler, */ /* Sort the list so the most beneficial ranges are at the front. */ - qsort(ranges.data, nr_entries, sizeof(struct ubo_range_entry), - cmp_ubo_range_entry); + if (nr_entries > 0) { + qsort(ranges.data, nr_entries, sizeof(struct ubo_range_entry), + cmp_ubo_range_entry); + } struct ubo_range_entry *entries = ranges.data;