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Don't compress empty debug section

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2012-07-03  H.J. Lu  <hongjiu.lu@intel.com>

	PR binutils/14319
	* elf.c (_bfd_elf_make_section_from_shdr): Don't compress empty
	debug section.

2012-07-03  H.J. Lu  <hongjiu.lu@intel.com>

	PR binutils/14319
	* binutils-all/compress.exp: Test compress empty debug sections.

	* binutils-all/dw2-empty.S: New file.
This commit is contained in:
H.J. Lu 2012-07-03 16:06:34 +00:00
parent 1e55e04f56
commit 5a5ed5b0e4
5 changed files with 44 additions and 1 deletions
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6
bfd/ChangeLog
View File

@ -1,3 +1,9 @@
2012-07-03 H.J. Lu <hongjiu.lu@intel.com>
PR binutils/14319
* elf.c (_bfd_elf_make_section_from_shdr): Don't compress empty
debug section.
2012-07-03 H.J. Lu <hongjiu.lu@intel.com>
PR ld/3351

2
bfd/elf.c
View File

@ -1025,7 +1025,7 @@ _bfd_elf_make_section_from_shdr (bfd *abfd,
else
{
/* Normal section. Check if we should compress. */
if ((abfd->flags & BFD_COMPRESS))
if ((abfd->flags & BFD_COMPRESS) && newsect->size != 0)
action = compress;
}

7
binutils/testsuite/ChangeLog
View File

@ -1,3 +1,10 @@
2012-07-03 H.J. Lu <hongjiu.lu@intel.com>
PR binutils/14319
* binutils-all/compress.exp: Test compress empty debug sections.
* binutils-all/dw2-empty.S: New file.
2012-06-07 Thomas Schwinge <thomas@codesourcery.com>
* binutils-all/i386/i386.exp: Don't skip for x86_64-*-linux*.

29
binutils/testsuite/binutils-all/compress.exp
View File

@ -133,3 +133,32 @@ if ![string match "" $got] then {
pass "$testname"
}
}
set testfile tmpdir/dw2-emty.o
if { ![binutils_assemble_flags $srcdir/$subdir/dw2-empty.S $testfile --nocompress-debug-sections] } then {
unsupported "compressed debug sections"
return
}
set testname "objcopy compress empty debug sections"
set got [binutils_run $OBJCOPY "--compress-debug-sections $testfile ${copyfile}.o"]
if ![string match "" $got] then {
fail "objcopy ($testname)"
} else {
send_log "cmp $testfile ${copyfile}.o\n"
verbose "cmp $testfile ${copyfile}.o"
set src1 ${testfile}
set src2 ${copyfile}.o
set status [remote_exec build cmp "${src1} ${src2}"]
set exec_output [lindex $status 1]
set exec_output [prune_warnings $exec_output]
if [string match "" $exec_output] then {
pass "objcopy ($testname)"
} else {
send_log "$exec_output\n"
verbose "$exec_output" 1
fail "objcopy ($testname)"
}
}

1
binutils/testsuite/binutils-all/dw2-empty.S Normal file
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@ -0,0 +1 @@
.section .debug_line