[Tinycc-devel] Bug Report: tcc segfault on fedora 29

[Herb Thompson]

Bug Report: tcc seg faults during "make test"  at tccelf.c:2462  "
s->sh_info = sm_table[sh->sh_info].s->sh_num; " on Fedora 29 but works
on Fedora 28. See core dump details below.

Note that if "make install" is run after "make test" fails, "tcc -run
ex1.c " does work but "tcc ex1.c "does not.


---/---

address@hidden tcc-0.9.27]# make test
make -C tests
make[1]: Entering directory '/root/tcc-0.9.27/tests'
------------ hello-exe ------------
../tcc -B.. -I../include -I.. -I.. ../examples/ex1.c -o hello &&
./hello || (set -x; ../tcc -vv; ldd ../tcc; exit 1)
/bin/sh: line 1:  6296 Segmentation fault      (core dumped) ../tcc
-B.. -I../include -I.. -I.. ../examples/ex1.c -o hello
+ ../tcc -vv
tcc version 0.9.27 (x86_64 Linux)
install: /usr/local/lib/tcc
include:
  /usr/local/lib/tcc/include
  /usr/local/include
  /usr/include
libraries:
  /usr/lib64
  /lib64
  /usr/local/lib64
libtcc1:
  /usr/local/lib/tcc/libtcc1.a
crt:
  /usr/lib64
elfinterp:
  /lib64/ld-linux-x86-64.so.2
+ ldd ../tcc
    linux-vdso.so.1 (0x00007fff6150e000)
    libm.so.6 => /lib64/libm.so.6 (0x00007f5f6e36b000)
    libdl.so.2 => /lib64/libdl.so.2 (0x00007f5f6e363000)
    libc.so.6 => /lib64/libc.so.6 (0x00007f5f6e19b000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f5f6e50b000)
+ exit 1
make[1]: *** [Makefile:66: hello-exe] Error 1
make[1]: Leaving directory '/root/tcc-0.9.27/tests'
make: *** [Makefile:347: test] Error 2
address@hidden tcc-0.9.27]#


---/---

address@hidden tcc-0.9.27]# coredumpctl debug
           PID: 6296 (tcc)
           UID: 0 (root)
           GID: 0 (root)
        Signal: 11 (SEGV)
     Timestamp: Wed 2018-10-31 21:41:35 ADT (1min 33s ago)
  Command Line: ../tcc -B.. -I../include -I.. -I.. ../examples/ex1.c -o hello
    Executable: /root/tcc-0.9.27/tcc
 Control Group:
/user.slice/user-1000.slice/address@hidden/gnome-terminal-server.service
          Unit: address@hidden
     User Unit: gnome-terminal-server.service
         Slice: user-1000.slice
     Owner UID: 1000 (user)
       Boot ID: 004d89d979b842c5ad724885401e5bfe
    Machine ID: b6067221fff34e1faeb327b7f084988e
      Hostname: localhost.localdomain
       Storage:
/var/lib/systemd/coredump/core.tcc.0.004d89d979b842c5ad724885401e5bfe.6296.1541032895000000.lz4
       Message: Process 6296 (tcc) of user 0 dumped core.

                Stack trace of thread 6296:
                #0  0x000000000041efe4 n/a (/root/tcc-0.9.27/tcc)

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Reading symbols from /root/tcc-0.9.27/tcc...done.
[New LWP 6296]

warning: Loadable section ".note.gnu.property" outside of ELF segments
Core was generated by `../tcc -B.. -I../include -I.. -I..
../examples/ex1.c -o hello'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x000000000041efe4 in tcc_load_object_file (address@hidden,
address@hidden, address@hidden)
    at tccelf.c:2462
2462                s->sh_info = sm_table[sh->sh_info].s->sh_num;
(gdb)


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