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* [Bug c/51085] New: "volatile const" structures (in C) go in the .data section, not .rodata as expected
@ 2011-11-10 17:44 etienne_lorrain at yahoo dot fr
2011-12-22 1:16 ` [Bug c/51085] " pinskia at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: etienne_lorrain at yahoo dot fr @ 2011-11-10 17:44 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51085
Bug #: 51085
Summary: "volatile const" structures (in C) go in the .data
section, not .rodata as expected
Classification: Unclassified
Product: gcc
Version: 4.6.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: etienne_lorrain@yahoo.fr
Basically, I was hoping (maybe my fault?) that "volatile const" data would go
to .rodata segment.
As described in the example for array1, that is not the case.
The example show array2, but to stop an asm message changing attribute of a
section I need the dirty trick of array3.
I did not noticed that with previous compiler version.
etienne@debian-testing:~/projet$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i486-linux-gnu/4.6/lto-wrapper
Target: i486-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.6.1-15'
--with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr
--program-suffix=-4.6 --enable-shared --enable-linker-build-id
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6
--libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc
--enable-targets=all --with-arch-32=i586 --with-tune=generic
--enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu
--target=i486-linux-gnu
Thread model: posix
gcc version 4.6.1 (Debian 4.6.1-15)
etienne@debian-testing:~/projet$ cat text.c
volatile const unsigned array1[3] = { 1, 2, 3 };
volatile const unsigned array2[3] __attribute__ ((section(".rodata"))) = { 1,
2, 3 };
volatile const unsigned array3[3] __attribute__ ((section(".rodata #"))) = { 1,
2, 3 };
etienne@debian-testing:~/projet$ gcc -S text.c -o -
.file "text.c"
.globl array1
.data
.align 4
.type array1, @object
.size array1, 12
array1:
.long 1
.long 2
.long 3
.globl array2
.section .rodata,"aw",@progbits
.align 4
.type array2, @object
.size array2, 12
array2:
.long 1
.long 2
.long 3
.globl array3
.section .rodata #,"aw",@progbits
.align 4
.type array3, @object
.size array3, 12
array3:
.long 1
.long 2
.long 3
.ident "GCC: (Debian 4.6.1-15) 4.6.1"
.section .note.GNU-stack,"",@progbits
etienne@debian-testing:~/projet$
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c/51085] "volatile const" structures (in C) go in the .data section, not .rodata as expected
2011-11-10 17:44 [Bug c/51085] New: "volatile const" structures (in C) go in the .data section, not .rodata as expected etienne_lorrain at yahoo dot fr
@ 2011-12-22 1:16 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2011-12-22 1:16 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51085
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-12-22 01:15:48 UTC ---
Dup of an older bug.
*** This bug has been marked as a duplicate of bug 25521 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-11-10 17:44 [Bug c/51085] New: "volatile const" structures (in C) go in the .data section, not .rodata as expected etienne_lorrain at yahoo dot fr
2011-12-22 1:16 ` [Bug c/51085] " pinskia at gcc dot gnu.org
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