This looks like a compiler bug.
bin/bash ../../../../libtool --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H -I.
-I../../../../src/include -I/usr/lib/wx/include/gtk2-unicode-release-2.8
-I/usr/include/wx-2.8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__
-pthread -I../../../../src/include -I../../../../src/sdk/wxscintilla/include
-Ulinux -Uunix -O2 -ffast-math -DCB_AUTOCONF -g -O2 -DCB_PRECOMP -Winvalid-pch
-fPIC -DPIC -fexceptions -c -o byocbtris.lo byocbtris.cpp
libtool: compile: g++ -DHAVE_CONFIG_H -I. -I../../../../src/include
-I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8
-D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -pthread
-I../../../../src/include -I../../../../src/sdk/wxscintilla/include -Ulinux
-Uunix -O2 -ffast-math -DCB_AUTOCONF -g -O2 -DCB_PRECOMP -Winvalid-pch -fPIC
-DPIC -fexceptions -c byocbtris.cpp -fPIC -DPIC -o .libs/byocbtris.o
/tmp/ccQ2nsvc.s: Assembler messages:
/tmp/ccQ2nsvc.s:5100: Error: r13 not allowed here -- `rsb ip,sp,ip,lsl#2'
Reduced testcase :
g++ -c -O2 -march=armv7-a tst.cpp
$> cat tst.cpp
#include <string.h>
typedef int ChunkConfig[16];
void AlignChunk(ChunkConfig& chunk)
{
int rowsShift = 0;
while ( rowsShift<4 )
{
bool isEmpty = true;
for ( int x=0; x<4; x++ )
if ( chunk[rowsShift*4+x] != 0 )
{
isEmpty = false;
break;
}
if ( !isEmpty ) break;
rowsShift++;
}
int colsShift = 0;
while ( colsShift<4 )
{
bool isEmpty = true;
for ( int y=0; y<4; y++ )
if ( chunk[colsShift+y*4] != 0 )
{
isEmpty = false;
break;
}
if ( !isEmpty ) break;
colsShift++;
}
if ( !colsShift && !rowsShift ) return;
ChunkConfig newChunk;
memset(newChunk,0,sizeof(newChunk));
for ( int y=rowsShift,y2=0; y<4; y++,y2++ )
for ( int x=colsShift,x2=0; x<4; x++,x2++ )
newChunk[x2+y2*4] = chunk[x+y*4];
memcpy(chunk,newChunk,sizeof(chunk));
}
Ramana
** Also affects: gcc-linaro
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/791327
Title:
codeblocks version 10.05-2 failed to build on armel
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