https://sourceware.org/bugzilla/show_bug.cgi?id=29451
Bug ID: 29451 Summary: gas-2.39 started adding 0-sized DIEs to functions without .size Product: binutils Version: 2.39 Status: UNCONFIRMED Severity: normal Priority: P2 Component: gas Assignee: unassigned at sourceware dot org Reporter: slyich at gmail dot com Target Milestone: --- Discovered in https://sourceware.org/PR29450 where gas-2.38 did not attach 0-sized DIE for glibc's _init assembly-written function and gas-2.39 did. Simple reproducer: $ cat crti.S.S .section .init,"ax",@progbits .p2align 2 .globl _init .hidden _init .type _init, @function _init: .section .text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat .globl __x86.get_pc_thunk.bx .hidden __x86.get_pc_thunk.bx .p2align 4 .type __x86.get_pc_thunk.bx,@function __x86.get_pc_thunk.bx: ud2 .size __x86.get_pc_thunk.bx, . - __x86.get_pc_thunk.bx .previous ud2 $ as-2.39 --gdwarf2 --32 -o crti.o crti.S.S $ readelf -aW --debug-dump crti.o <0><b>: Abbrev Number: 1 (DW_TAG_compile_unit) <c> DW_AT_stmt_list : (data4) 0x0 <10> DW_AT_ranges : (data4) 0x0 <14> DW_AT_name : (strp) (offset: 0x0): crti.S.S <18> DW_AT_comp_dir : (strp) (offset: 0x9): /home/slyfox/dev/bugs/binutils-2.39-crti-size/delta <1c> DW_AT_producer : (strp) (offset: 0x3d): GNU AS 2.39 <20> DW_AT_language : (data2) 32769 (MIPS assembler) <1><22>: Abbrev Number: 2 (DW_TAG_subprogram) <23> DW_AT_name : (strp) (offset: 0x49): _init <27> DW_AT_external : (flag) 1 <28> DW_AT_low_pc : (addr) 0x0 <2c> DW_AT_high_pc : (addr) 0x0 <1><30>: Abbrev Number: 2 (DW_TAG_subprogram) <31> DW_AT_name : (strp) (offset: 0x4f): __x86.get_pc_thunk.bx <35> DW_AT_external : (flag) 1 <36> DW_AT_low_pc : (addr) 0x0 <3a> DW_AT_high_pc : (addr) 0x2 <1><3e>: Abbrev Number: 0 $ as-2.38 --gdwarf2 --32 -o crti.o crti.S.S $ readelf -aW --debug-dump crti.o <0><b>: Abbrev Number: 1 (DW_TAG_compile_unit) <c> DW_AT_stmt_list : (data4) 0x0 <10> DW_AT_ranges : (data4) 0x0 <14> DW_AT_name : (strp) (offset: 0x0): crti.S.S <18> DW_AT_comp_dir : (strp) (offset: 0x9): /home/slyfox/dev/bugs/binutils-2.39-crti-size/delta <1c> DW_AT_producer : (strp) (offset: 0x3d): GNU AS 2.38 <20> DW_AT_language : (data2) 32769 (MIPS assembler) Would it be fair to say it's a bug to assign zero size here via DW_AT_low_pc / DW_AT_high_pc? -- You are receiving this mail because: You are on the CC list for the bug.