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Add flag to output standard-compliant .debug_abbrev section #49

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Add flag to output standard-compliant .debug_abbrev section #49

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8 changes: 8 additions & 0 deletions gcc/dwarf2out.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3697,6 +3697,14 @@ output_abbrev_section ()

fprintf (asm_out_file, "\t%s\t0,0\n", ASM_BYTE_OP);
}

if (flag_dwarf_bugfix)
{
/* We need to properly terminate the abbrev table for this
compilation unit, as per the standard, and not rely on
workarounds in e.g. gdb. */
fprintf (asm_out_file, "\t%s\t0\n", ASM_BYTE_OP);
}
}

/* Output location description stack opcode's operands (if any). */
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3 changes: 3 additions & 0 deletions gcc/flags.h
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Expand Up @@ -450,3 +450,6 @@ extern enum graph_dump_types graph_dump_format;

/* Nonzero if ASM output should use hex instead of decimal. */
extern int flag_hex_asm;

/* Nonzero if dwarf bug should be fixed. */
extern int flag_dwarf_bugfix;
5 changes: 5 additions & 0 deletions gcc/toplev.c
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Expand Up @@ -585,6 +585,9 @@ int flag_instrument_function_entry_exit = 0;
/* Use hex instead of decimal in ASM output. */
int flag_hex_asm = 0;

/* Output standard-compliant dwarf .debug_abbrev section. */
int flag_dwarf_bugfix = 0;

typedef struct
{
char *string;
Expand Down Expand Up @@ -724,6 +727,8 @@ lang_independent_options f_options[] =
"Instrument function entry/exit with profiling calls"},
{"hex-asm", &flag_hex_asm, 1,
"Use hex instead of decimal in assembly output"},
{"dwarf-bugfix", &flag_dwarf_bugfix, 1,
"Output standard-compliant dwarf .debug_abbrev section"},
};

#define NUM_ELEM(a) (sizeof (a) / sizeof ((a)[0]))
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