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ChangeLog:

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2011-03-16  Paul Pluzhnikov  <ppluzhnikov@google.com>

	PR gdb/12528
	* dwarf2read.c (noop_record_line): New function.
	(dwarf_decode_lines): Ignore line tables for GCd functions.

testsuite/ChangeLog:

2011-03-16  Paul Pluzhnikov  <ppluzhnikov@google.com>

	PR gdb/12528
	* gdb.base/Makefile.in: Adjust EXECUTABLES.
	* gdb.base/break-on-linker-gcd-function.exp: New test.
	* gdb.base/break-on-linker-gcd-function.cc: New file.
This commit is contained in:
Paul Pluzhnikov
2011-03-16 18:16:26 +00:00
parent b37520b626
commit c91513d8bc
6 changed files with 133 additions and 6 deletions
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37
gdb/dwarf2read.c
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@@ -10364,6 +10364,14 @@ psymtab_include_file_name (const struct line_header *lh, int file_index,
return include_name;
}
/* Ignore this record_line request. */
static void
noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc)
{
return;
}
/* Decode the Line Number Program (LNP) for the given line_header
structure and CU. The actual information extracted and the type
of structures created from the LNP depends on the value of PST.
@@ -10399,6 +10407,8 @@ dwarf_decode_lines (struct line_header *lh, const char *comp_dir, bfd *abfd,
struct gdbarch *gdbarch = get_objfile_arch (objfile);
const int decode_for_pst_p = (pst != NULL);
struct subfile *last_subfile = NULL, *first_subfile = current_subfile;
void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc)
= record_line;
baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
@@ -10468,13 +10478,13 @@ dwarf_decode_lines (struct line_header *lh, const char *comp_dir, bfd *abfd,
{
addr = gdbarch_addr_bits_remove (gdbarch, address);
if (last_subfile)
record_line (last_subfile, 0, addr);
(*p_record_line) (last_subfile, 0, addr);
last_subfile = current_subfile;
}
/* Append row to matrix using current values. */
addr = check_cu_functions (address, cu);
addr = gdbarch_addr_bits_remove (gdbarch, addr);
record_line (current_subfile, line, addr);
(*p_record_line) (current_subfile, line, addr);
}
}
basic_block = 0;
@@ -10491,10 +10501,27 @@ dwarf_decode_lines (struct line_header *lh, const char *comp_dir, bfd *abfd,
switch (extended_op)
{
case DW_LNE_end_sequence:
p_record_line = record_line;
end_sequence = 1;
break;
case DW_LNE_set_address:
address = read_address (abfd, line_ptr, cu, &bytes_read);
if (address == 0 && !dwarf2_per_objfile->has_section_at_zero)
{
/* This line table is for a function which has been
GCd by the linker. Ignore it. PR gdb/12528 */
long line_offset
= line_ptr - dwarf2_per_objfile->line.buffer;
complaint (&symfile_complaints,
_(".debug_line address at offset 0x%lx is 0 "
"[in module %s]"),
line_offset, cu->objfile->name);
p_record_line = noop_record_line;
}
op_index = 0;
line_ptr += bytes_read;
address += baseaddr;
@@ -10551,12 +10578,12 @@ dwarf_decode_lines (struct line_header *lh, const char *comp_dir, bfd *abfd,
{
addr = gdbarch_addr_bits_remove (gdbarch, address);
if (last_subfile)
record_line (last_subfile, 0, addr);
(*p_record_line) (last_subfile, 0, addr);
last_subfile = current_subfile;
}
addr = check_cu_functions (address, cu);
addr = gdbarch_addr_bits_remove (gdbarch, addr);
record_line (current_subfile, line, addr);
(*p_record_line) (current_subfile, line, addr);
}
}
basic_block = 0;
@@ -10655,7 +10682,7 @@ dwarf_decode_lines (struct line_header *lh, const char *comp_dir, bfd *abfd,
if (!decode_for_pst_p)
{
addr = gdbarch_addr_bits_remove (gdbarch, address);
record_line (current_subfile, 0, addr);
(*p_record_line) (current_subfile, 0, addr);
}
}
}