https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93160
Bug ID: 93160 Summary: ICE: in expand_expr_addr_expr_1, at expr.c:8070 Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: inline-asm Assignee: unassigned at gcc dot gnu.org Reporter: anbu1024.me at gmail dot com Target Milestone: --- $ cat test.c extern long unsigned int sub_0 ( const char * ) ; extern void * sub_1 ( long unsigned int ) ; extern int var_0 ; void * var_1 = & var_0 ; register int var_0 asm ( "%ecx" ) ; -------------------------------------------------------------------------------- $ gcc-snapshot10 --versiongcc (GCC) 10.0.0 20191229 (experimental) Copyright (C) 2019 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-snapshot10 test.c test.c:10:14: warning: call-clobbered register used for global register variable 10 | register int var_0 asm ( "%ecx" ) ; | ^~~~~ test.c:10:1: internal compiler error: in expand_expr_addr_expr_1, at expr.c:8070 10 | register int var_0 asm ( "%ecx" ) ; | ^~~~~~~~ 0x633aab expand_expr_addr_expr_1 ../../gcc-10-20191229/gcc/expr.c:8070 0xa1b8f9 expand_expr_addr_expr ../../gcc-10-20191229/gcc/expr.c:8183 0xa1b8f9 expand_expr_real_1(tree_node*, rtx_def*, machine_mode, expand_modifier, rtx_def**, bool) ../../gcc-10-20191229/gcc/expr.c:11358 0x105d9ab expand_expr ../../gcc-10-20191229/gcc/expr.h:282 0x105d9ab output_constant ../../gcc-10-20191229/gcc/varasm.c:4993 0x105e274 output_constant ../../gcc-10-20191229/gcc/varasm.c:4901 0x105e274 assemble_variable_contents ../../gcc-10-20191229/gcc/varasm.c:2148 0x10636ba assemble_variable(tree_node*, int, int, int) ../../gcc-10-20191229/gcc/varasm.c:2327 0x1066f29 varpool_node::assemble_decl() ../../gcc-10-20191229/gcc/varpool.c:586 0x938c1c output_in_order ../../gcc-10-20191229/gcc/cgraphunit.c:2566 0x938c1c symbol_table::compile() ../../gcc-10-20191229/gcc/cgraphunit.c:2803 0x93ae8c symbol_table::compile() ../../gcc-10-20191229/gcc/cgraphunit.c:2719 0x93ae8c symbol_table::finalize_compilation_unit() ../../gcc-10-20191229/gcc/cgraphunit.c:2986 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.