http://sourceware.org/bugzilla/show_bug.cgi?id=12851
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Wrong section group usage |--gc-sections doesn't work
|in <sys/sdt.h> |on comdat sections
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> 2011-06-08 17:39:45
UTC ---
[hjl@gnu-6 pr12851]$ make clean
rm -f a.out x
[hjl@gnu-6 pr12851]$ cat foo.s
.section .note.stapsdt,"?","note"
.dc.a _.stapsdt.base
.section .stapsdt.base,"aG","progbits",.stapsdt.base,comdat
_.stapsdt.base: .space 1
.size _.stapsdt.base,1
[hjl@gnu-6 pr12851]$ cat bar.s
.section .note.stapsdt,"?","note"
.dc.a _.stapsdt.base
.section .stapsdt.base,"aG","progbits",.stapsdt.base,comdat
.weak _.stapsdt.base
_.stapsdt.base: .space 1
.size _.stapsdt.base,1
[hjl@gnu-6 pr12851]$ cat start.s
.text
.global start /* Used by SH targets. */
start:
.global _start
_start:
.global __start
__start:
.global main /* Used by HPPA targets. */
main:
.dc.a 0
[hjl@gnu-6 pr12851]$ make x
./ld --gc-sections -o x foo1.o foo2.o start.o
`_.stapsdt.base' referenced in section `.note.stapsdt' of foo1.o: defined in
discarded section `.stapsdt.base[.stapsdt.base]' of foo1.o
`_.stapsdt.base' referenced in section `.note.stapsdt' of foo2.o: defined in
discarded section `.stapsdt.base[.stapsdt.base]' of foo2.o
make: *** [x] Error 1
[hjl@gnu-6 pr12851]$ make y
./ld --gc-sections -o y bar1.o bar2.o start.o
`_.stapsdt.base' referenced in section `.note.stapsdt' of bar1.o: defined in
discarded section `.stapsdt.base[.stapsdt.base]' of bar1.o
`_.stapsdt.base' referenced in section `.note.stapsdt' of bar2.o: defined in
discarded section `.stapsdt.base[.stapsdt.base]' of bar1.o
make: *** [y] Error 1
[hjl@gnu-6 pr12851]$
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