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

[Thomas Preud'homme]

Le mercredi 23 janvier 2013 22:20:19, vous avez écrit :
> 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.

Ah yeah, I forgot that tests2 was added later. But it suggests that the 
problem might indeed come from the hardfloat calling convention (or a later 
commit).

You can have the tests2 tests by doing (after the git clone && git checkout 
you did): git cherry-pick 42c1b6ba380d9d1ab85f0cc21db07e71667cc682

Thanks a lot for your prompt answers and all the tests you do.

> 
> Regards,

Best regards,

> 
> Jerry

Thomas

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