https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83230
Bug ID: 83230
Summary: [8.0 regression] segmentation fault in bind C C/C++
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: juergen.reuter at desy dot de
Target Milestone: ---
Created attachment 42757
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42757&action=edit
Reproducer
The following code seg faults in the most recent versions for gcc/g++/gfortran,
cf. below. I'm using the gcc trunk 255190 with the patch in
https://gcc.gnu.org/viewcvs/gcc/branches/gcc-7-branch/gcc/fortran/resolve.c?r1=255029&r2=255205&pathrev=255205
applied. The C++ code which I adapted here and linked into my Fortran program
works standalone with that version of gcc/g++, but the bind(C) fails. I'm not
sure whether this an error (or simply a change in the C/C++ API) or whether
something in bind(C) broke. The C++ code contains an implementation for an XDR
reader, which is applied from a Fortran program via bind(C) to read in the file
eio_stdhep_1.hep which is also attached. If this is in bind(C) it could be
related https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83225
at least it happened relatively close to the commit causing that bug.
$ ./rt_error
writing stdhep event ...
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x7fcfa0029caf in ???
#1 0x7fcfa007613c in ???
#2 0x7fcfa1071c05 in _ZN9__gnu_cxx13new_allocatorIcE10deallocateEPcm
at
/home/reuter/sandbox_gcc8/packages/gcc_trunk/_build/x86_64-pc-linux-gnu/libstdc++-v3/include/ext/new_allocator.h:125
#3 0x7fcfa1071c05 in _ZNSt16allocator_traitsISaIcEE10deallocateERS0_Pcm
at
/home/reuter/sandbox_gcc8/packages/gcc_trunk/_build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/alloc_traits.h:462
#4 0x7fcfa1071c05 in
_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_destroyEm
at
/home/reuter/sandbox_gcc8/packages/gcc_trunk/_build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:226
#5 0x7fcfa1071c05 in
_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_disposeEv
at
/home/reuter/sandbox_gcc8/packages/gcc_trunk/_build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:221
#6 0x7fcfa1071c05 in _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED4Ev
at
/home/reuter/sandbox_gcc8/packages/gcc_trunk/_build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:647
#7 0x7fcfa1071c05 in
_ZNSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEED4Ev
at
/home/reuter/sandbox_gcc8/packages/gcc_trunk/_build/x86_64-pc-linux-gnu/libstdc++-v3/include/sstream:65
#8 0x7fcfa1071c05 in
_ZNSt7__cxx1118basic_stringstreamIcSt11char_traitsIcESaIcEED1Ev
at
/home/reuter/sandbox_gcc8/packages/gcc_trunk/_build/x86_64-pc-linux-gnu/libstdc++-v3/include/sstream:732
#9 0x407b56 in ???
#10 0x406c1d in ???
#11 0x408485 in ???
#12 0x408519 in ???
#13 0x4085f8 in ???
#14 0x40862e in ???
#15 0x7fcfa0014f44 in ???
#16 0x401918 in ???
#17 0xffffffffffffffff in ???
Segmentation fault (core dumped)
