https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95161
Bug ID: 95161 Summary: [10/11 Regression] internal compiler error: in gimplify_expr, at gimplify.c:14609 Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: anbu1024.me at gmail dot com Target Milestone: --- $ cat test.c unsigned short * x = 0 ; int foo ( void ) { * x = 0 ; } int x [ ] = { 1 , 2 , 3 } $ gcc-11 --version gcc (GCC) 11.0.0 20200510 (experimental) Copyright (C) 2020 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ gcc-11 test.c test.c:6:5: error: conflicting types for ‘x’ 6 | int x [ ] = { 1 , 2 , 3 } | ^ test.c:2:18: note: previous definition of ‘x’ was here 2 | unsigned short * x = 0 ; | ^ test.c:6:1: error: expected ‘,’ or ‘;’ at end of input 6 | int x [ ] = { 1 , 2 , 3 } | ^~~ test.c: In function ‘foo’: test.c:4:20: internal compiler error: in gimplify_expr, at gimplify.c:14609 4 | int foo ( void ) { * x = 0 ; } | ^~~ 0x674c01 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-11-20200510/gcc/gimplify.c:14609 0xb0192a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-11-20200510/gcc/gimplify.c:13706 0xb1669f gimplify_modify_expr ../../gcc-11-20200510/gcc/gimplify.c:5759 0xaff80c gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-11-20200510/gcc/gimplify.c:13585 0xb02e76 gimplify_stmt(tree_node**, gimple**) ../../gcc-11-20200510/gcc/gimplify.c:6802 0xb03b43 gimplify_bind_expr ../../gcc-11-20200510/gcc/gimplify.c:1411 0xb00383 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-11-20200510/gcc/gimplify.c:13786 0xb17a87 gimplify_stmt(tree_node**, gimple**) ../../gcc-11-20200510/gcc/gimplify.c:6802 0xb17a87 gimplify_body(tree_node*, bool) ../../gcc-11-20200510/gcc/gimplify.c:14834 0xb17ebd gimplify_function_tree(tree_node*) ../../gcc-11-20200510/gcc/gimplify.c:14988 0x962f47 cgraph_node::analyze() ../../gcc-11-20200510/gcc/cgraphunit.c:670 0x965b47 analyze_functions ../../gcc-11-20200510/gcc/cgraphunit.c:1227 0x966712 symbol_table::finalize_compilation_unit() ../../gcc-11-20200510/gcc/cgraphunit.c:2971 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. $ gcc-10 --version gcc (GCC) 10.0.1 20200419 (experimental) Copyright (C) 2020 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ gcc-10 test.c test.c:6:5: error: conflicting types for ‘x’ 6 | int x [ ] = { 1 , 2 , 3 } | ^ test.c:2:18: note: previous definition of ‘x’ was here 2 | unsigned short * x = 0 ; | ^ test.c:6:1: error: expected ‘,’ or ‘;’ at end of input 6 | int x [ ] = { 1 , 2 , 3 } | ^~~ test.c: In function ‘foo’: test.c:4:20: internal compiler error: in gimplify_expr, at gimplify.c:14632 4 | int foo ( void ) { * x = 0 ; } | ^~~ 0x674570 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-10-20200419/gcc/gimplify.c:14632 0xaff66a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-10-20200419/gcc/gimplify.c:13729 0xb1453f gimplify_modify_expr ../../gcc-10-20200419/gcc/gimplify.c:5782 0xafd53c gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-10-20200419/gcc/gimplify.c:13608 0xb00bd6 gimplify_stmt(tree_node**, gimple**) ../../gcc-10-20200419/gcc/gimplify.c:6825 0xb0199b gimplify_bind_expr ../../gcc-10-20200419/gcc/gimplify.c:1424 0xafe0b3 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-10-20200419/gcc/gimplify.c:13809 0xb15927 gimplify_stmt(tree_node**, gimple**) ../../gcc-10-20200419/gcc/gimplify.c:6825 0xb15927 gimplify_body(tree_node*, bool) ../../gcc-10-20200419/gcc/gimplify.c:14857 0xb15e53 gimplify_function_tree(tree_node*) ../../gcc-10-20200419/gcc/gimplify.c:15030 0x9607d7 cgraph_node::analyze() ../../gcc-10-20200419/gcc/cgraphunit.c:670 0x9633f7 analyze_functions ../../gcc-10-20200419/gcc/cgraphunit.c:1227 0x963fc2 symbol_table::finalize_compilation_unit() ../../gcc-10-20200419/gcc/cgraphunit.c:2974 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions.