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[Bug middle-end/37170] [4.4 Regression]: gcc.dg/weak/weak-1.c



------- Comment #84 from aldot at gcc dot gnu dot org  2008-09-24 09:51 -------
The fix doesn't seem to work for me on arm:
$ cat pr-weak.c
/* tell the compiler that the count isn't in the small data section if the arch
 * has one (eg: FRV)
 */
extern const unsigned long kallsyms_num_syms
__attribute__((weak, section(".rodata")));

int main(void) {
  return !!kallsyms_num_syms;
}

$ /there.arm/usr/bin/arm-linux-uclibcgnueabi-gcc -Os -S -o - pr-weak.c -v
Using built-in specs.
Target: arm-linux-uclibcgnueabi
Configured with: /srcs/toolchain_build_arm_nofpu/gcc-4.4.0/configure
--prefix=/usr --build=i386-pc-linux-gnu --host=i386-pc-linux-gnu
--target=arm-linux-uclibcgnueabi --enable-languages=c,fortran
--with-sysroot=/there.arm
--with-build-time-tools=/there.arm/usr/arm-linux-uclibcgnueabi/bin
--disable-__cxa_atexit --enable-target-optspace --with-gnu-ld --enable-shared
--with-gmp=/srcs/toolchain_build_arm_nofpu/gmp
--with-mpfr=/srcs/toolchain_build_arm_nofpu/mpfr --disable-nls --enable-threads
--disable-multilib --with-float=soft --with-abi=aapcs-linux --disable-libssp
--disable-libssp --disable-libmudflap --disable-libgomp
--enable-decimal-float=no
Thread model: posix
gcc version 4.4.0 20080923 (experimental) [trunk revision 140602] (GCC) 
COLLECT_GCC_OPTIONS='-Os' '-S' '-o' '-' '-v' '-mfloat-abi=soft'
'-mabi=aapcs-linux'
 /there.arm/usr/bin/../libexec/gcc/arm-linux-uclibcgnueabi/4.4.0/cc1 -quiet -v
-iprefix /there.arm/usr/bin/../lib/gcc/arm-linux-uclibcgnueabi/4.4.0/ pr-weak.c
-quiet -dumpbase pr-weak.c -mfloat-abi=soft -mabi=aapcs-linux -auxbase-strip -
-Os -version -o -
ignoring nonexistent directory
"/there.arm/usr/bin/../lib/gcc/arm-linux-uclibcgnueabi/4.4.0/../../../../arm-linux-uclibcgnueabi/include"
ignoring nonexistent directory "/there.arm/usr/local/include"
ignoring duplicate directory
"/there.arm/usr/bin/../lib/gcc/../../lib/gcc/arm-linux-uclibcgnueabi/4.4.0/include"
ignoring duplicate directory
"/there.arm/usr/bin/../lib/gcc/../../lib/gcc/arm-linux-uclibcgnueabi/4.4.0/include-fixed"
ignoring nonexistent directory
"/there.arm/usr/bin/../lib/gcc/../../lib/gcc/arm-linux-uclibcgnueabi/4.4.0/../../../../arm-linux-uclibcgnueabi/include"
#include "..." search starts here:
#include <...> search starts here:
 /there.arm/usr/bin/../lib/gcc/arm-linux-uclibcgnueabi/4.4.0/include
 /there.arm/usr/bin/../lib/gcc/arm-linux-uclibcgnueabi/4.4.0/include-fixed
 /there.arm/usr/include
End of search list.
GNU C (GCC) version 4.4.0 20080923 (experimental) [trunk revision 140602]
(arm-linux-uclibcgnueabi)
        compiled by GNU C version 4.3.2, GMP version 4.2.2, MPFR version 2.3.1.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 071bc0f306e6057c8a651fee23ec8dfa
        .cpu arm10tdmi
        .fpu softvfp
        .eabi_attribute 20, 1
        .eabi_attribute 21, 1
        .eabi_attribute 23, 3
        .eabi_attribute 24, 1
        .eabi_attribute 25, 1
        .eabi_attribute 26, 2
        .eabi_attribute 30, 4
        .eabi_attribute 18, 4
        .file   "pr-weak.c"
        .text
        .align  2
        .global main
        .type   main, %function
main:
        @ args = 0, pretend = 0, frame = 0
        @ frame_needed = 0, uses_anonymous_args = 0
        @ link register save eliminated.
        ldr     r3, .L3
        ldr     r0, [r3, #0]
        subs    r0, r0, #0
        movne   r0, #1
        bx      lr
.L4:
        .align  2
.L3:
        .word   kallsyms_num_syms
        .size   main, .-main
        .ident  "GCC: (GNU) 4.4.0 20080923 (experimental) [trunk revision
140602]"
        .section        .note.GNU-stack,"",%progbits
COMPILER_PATH=/there.arm/usr/bin/../libexec/gcc/arm-linux-uclibcgnueabi/4.4.0/:/there.arm/usr/bin/../libexec/gcc/:/there.arm/usr/bin/../lib/gcc/arm-linux-uclibcgnueabi/4.4.0/../../../../arm-linux-uclibcgnueabi/bin/
LIBRARY_PATH=/there.arm/usr/bin/../lib/gcc/arm-linux-uclibcgnueabi/4.4.0/:/there.arm/usr/bin/../lib/gcc/:/there.arm/usr/bin/../lib/gcc/arm-linux-uclibcgnueabi/4.4.0/../../../../arm-linux-uclibcgnueabi/lib/:/there.arm/lib/:/there.arm/usr/lib/
COLLECT_GCC_OPTIONS='-Os' '-S' '-o' '-' '-v' '-mfloat-abi=soft'
'-mabi=aapcs-linux'

works with 4.3.2 configured in the same way.


-- 

aldot at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37170


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