Re: [Tinycc-devel] Segmentation Faults and test failures on ARM (Raspbian/Raspberry Pi)

[Jerry Reed]

Ok, hoping I did this correctly.  I'm not very familiar with git, we use svn.

git clone git://repo.or.cz/tinycc.git $HOME/build/tinycc
cd build/tinycc
git checkout bfb00494eb2ffaf4fbf68a8ecabe9e503f4cdf65
./configure address@hidden:~/build/tinycc# ./configure --with-libgcc

Binary  directory   /usr/local/bin
TinyCC directory    /usr/local/lib/tcc
Library directory   /usr/local/lib
Include directory   /usr/local/include
Manual directory    /usr/local/share/man
Info directory      /usr/local/share/info
Doc directory       /usr/local/share/doc/tcc
Target root prefix  
Source path      /home/root/build/tinycc
C compiler       gcc
Target OS        Linux
CPU              armv4l
Big Endian       no
gprof enabled    no
cross compilers  no
use libgcc       yes
Creating config.mak and config.h
config.h is unchanged
address@hidden:~/build/tinycc# 

make clean
make

address@hidden:~/build/tinycc# make
gcc -o tcc.o -c tcc.c -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0
gcc -o libtcc.o -c libtcc.c -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0
gcc -o tccpp.o -c tccpp.c -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0
gcc -o tccgen.o -c tccgen.c -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0
gcc -o tccelf.o -c tccelf.c -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0
tccelf.c:1190:12: warning: 'tcc_add_support' defined but not used
gcc -o tccasm.o -c tccasm.c -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0
gcc -o tccrun.o -c tccrun.c -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0
gcc -o arm-gen.o -c arm-gen.c -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0
ar rcs libtcc.a libtcc.o tccpp.o tccgen.o tccelf.o tccasm.o tccrun.o arm-gen.o
gcc -o tcc tcc.o libtcc.a -lm -ldl -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0  
texi2html -monolithic -number tcc-doc.texi
make: texi2html: Command not found
make: [tcc-doc.html] Error 127 (ignored)
makeinfo tcc-doc.texi
make: makeinfo: Command not found
make: [tcc-doc.info] Error 127 (ignored)
address@hidden:~/build/tinycc# 

make test

address@hidden:~/build/tinycc# make test
make -C tests test
make[1]: Entering directory `/home/root/build/tinycc/tests'
gcc -o libtcc_test libtcc_test.c ../libtcc.a -I.. -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0 -lm -ldl 
------------ libtest ------------
./libtcc_test lib_path=..
Hello World!
fib(32) = 2178309
add(32, 64) = 96
cp ../include/tcclib.h .
gcc -o tcctest.gcc tcctest.c -I. -w -Wall -g -O2 -fno-strict-aliasing -Wno-pointer-sign -Wno-sign-compare -D_FORTIFY_SOURCE=0 -std=gnu99
./tcctest.gcc > test.ref
------------ test3 ------------
../tcc -B.. -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -run -DONE_SOURCE ../tcc.c -B.. -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -run -DONE_SOURCE ../tcc.c -B.. -DTCC_TARGET_ARM -DWITHOUT_LIBTCC -DTCC_ARM_EABI  -DTCC_ARM_VFP -run -DONE_SOURCE ../tcc.c -B.. -run tcctest.c > test.out3
--- test.ref    2013-01-23 21:14:04.000000000 +0000
+++ test.out3   2013-01-23 21:14:07.000000000 +0000

<snipping lots of diff output here>

address@hidden:~/build/tinycc/tests# sdiff -s test.ref test.out3
 1 2 0 0 0 0 0 0 0 0                                          |  1 2 -1098053716 469762049 -1098053660 3775737 237576 -109805
 1 2 0 4 0 0 0 3 0 0                                          |  1 2 237576 4 20 1074479592 28 3 8 -1098053624
 97 98 99 0 0 0 0 0 0 0                                       |  97 98 99 0 141 190 0 208 49 64
 2 3 0 0 0 0 4 0 0 0                                          |  2 3 1077007824 20 1074479592 28 4 8 -1098053624 1076077472
1 0 2 0                                                       | 1 20 2 -1098053772
4886718345 4026531841 120                                     | -35179485370487 -305211113471 824633720952
ftoi: 234 234                                                 | ftoi: 235 235
ftoi: -2334 0                                                 | ftoi: 0 0
ftoi: 234 234                                                 | ftoi: 235 235
ftoi: -2334 0                                                 | ftoi: 0 0
ftoi: 234 234                                                 | ftoi: 235 235
ftoi: -2334 0                                                 | ftoi: 0 0
1.000000 2 3.000000                                           | 0.000000 1072693248 0.000000
1234567891234 987654321986 3 1234.000000                      | 8213168387073769472 -808124270273101537 229 0.000000
1.200000 2.300000 3.400000                                    | 0.000000 1903598371493484598915081361992312732437090761816988
1 2 3 4 5 6 7 8 0.100000 1.200000 2.300000 3.400000 4.500000  | 1 2 3 4 5 6 7 8 -0.000000 0.000000 19035983714934845989150813
1 2 3 4 5 6 7 8 0.100000 1.200000 2.300000 3.400000 4.500000  | 1 2 3 4 5 6 7 8 -0.000000 0.000000 19035983714934845989150813
1 2 3 4 5 6 7 8 0.100000 1.200000 2.300000 3.400000 4.500000  | 1 2 3 4 5 6 7 8 -0.000000 0.000000 19035983714934845989150813
1234567891234.000000 1 2 3 4 5 6 7 8 0.100000 1.200000 2.3000 | -0.000000 1114765087 1 2 3 4 5 6 7 -0.000000 0.000000 1903598
1 2 3 4 5 6 7 8 1234567891234.000000                          | 1 2 3 4 5 6 7 8 -0.000000
1 2 3 4 5 6 7 8 0.100000 1.200000 2.300000 3.400000 4.500000  | 1 2 3 4 5 6 7 8 -0.000000 0.000000 19035983714934845989150813
1 2 3 4 5 6 7 8 0.100000 1.200000 2.300000 3.400000 4.500000  | 1 2 3 4 5 6 7 8 -0.000000 0.000000 19035983714934845989150813
__builtin_types_compatible_p(char *, unsigned char *) = 0     | __builtin_types_compatible_p(char *, unsigned char *) = 1
address@hidden:~/build/tinycc/tests# 

<thinking the above is the set of relevant differences between the ref and out3 files>

This branch/version doesn't seem to have the tests2 directory, so I could not easily repeat the 40_stdio.c test.  However, the tests that are performed complete without a Segmentation fault, unlike the previous version.

Regards,

Jerry

On Wed, Jan 23, 2013 at 2:41 PM, Thomas Preud'homme <address@hidden> wrote:

Le lundi 21 janvier 2013 03:53:04, Jerry Reed a écrit :
>
> Any further suggestions for how I might obtain more information here.

Can you try from a checkout of the tree as of commit
bfb00494eb2ffaf4fbf68a8ecabe9e503f4cdf65 ?

The change to introduce hardfloat calling convention also changed a bit the
softfloat calling convention (I tried to factorize the code). I want to make
sure wether it is the cause of this bug or not.

>
> Again, thanks.

Thanks for the report.

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