https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98780
--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
At final, we have:
...
(note 113 30 112 2 0x7f53d1836de0 NOTE_INSN_BLOCK_BEG)
(note 112 113 31 2 0x7f53d1836e40 NOTE_INSN_BLOCK_BEG)
(call_insn 31 112 114 2 (call (mem:QI (symbol_ref:DI ("bar") [flags 0x41]
<function_decl 0x7f53d1858000 bar>) [0 bar S1 A8])
(const_int 0 [0])) "src/gdb/testsuite/gdb.opt/inline-cmds.c":35:3 813
{*call}
(nil)
(nil))
(note 114 31 115 2 0x7f53d1836e40 NOTE_INSN_BLOCK_END)
(note 115 114 117 2 0x7f53d1836de0 NOTE_INSN_BLOCK_END)
(note 117 115 116 2 0x7f53d1836d20 NOTE_INSN_BLOCK_BEG)
(note 116 117 38 2 0x7f53d1836d80 NOTE_INSN_BLOCK_BEG)
(call_insn 38 116 118 2 (call (mem:QI (symbol_ref:DI ("bar") [flags 0x41]
<function_decl 0x7f53d1858000 bar>) [0 bar S1 A8])
(const_int 0 [0])) "src/gdb/testsuite/gdb.opt/inline-cmds.c":35:3 813
{*call}
(nil)
(nil))
(note 118 38 119 2 0x7f53d1836d80 NOTE_INSN_BLOCK_END)
(note 119 118 45 2 0x7f53d1836d20 NOTE_INSN_BLOCK_END)
...
So if we reset last_linenum when encountering a BLOCK_END:
...
diff --git a/gcc/final.c b/gcc/final.c
index b037e07fca0..a5da1ce7224 100644
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -2385,6 +2385,8 @@ final_scan_insn_1 (rtx_insn *insn, FILE *file, int
optimize_p AT
TRIBUTE_UNUSED,
debug_hooks->end_block (high_block_linenum, n);
gcc_assert (BLOCK_IN_COLD_SECTION_P (NOTE_BLOCK (insn))
== in_cold_section_p);
+
+ last_linenum = 0;
}
if (write_symbols == DBX_DEBUG)
{
...
I get:
...
Line number Starting address View Stmt
71 0x64 x
35 0x6e x
35 0x73 x
75 0x78 x
...
