I created a small test I will attach to this bug report that shows that
executables created with -fprofile-arcs -ftest-coverage crash in gcov_exit ()
if they dynamically load functions from libraries.
I tested with gcc 3.4.1 and 4.0-20050213. Both show the same problem.
Here's the gdb stack trace for both compilers:
Program terminated with signal 11, Segmentation fault.
#0 gcov_exit () at ../../gcc-3.4.1/gcc/libgcov.c:139
139 if (!((1 << t_ix) & gi_ptr->ctr_mask))
(gdb) where
#0 gcov_exit () at ../../gcc-3.4.1/gcc/libgcov.c:139
#1 0x4018b820 in exit () from /lib/tls/libc.so.6
#2 0x40176b1a in __libc_start_main () from /lib/tls/libc.so.6
#3 0x080491b1 in _start () at ../sysdeps/i386/elf/start.S:119
Program terminated with signal 11, Segmentation fault.
#0 gcov_exit () at ../../gcc-4.0-20050213/gcc/libgcov.c:139
139 if (!((1 << t_ix) & gi_ptr->ctr_mask))
((gdb) where
#0 gcov_exit () at ../../gcc-4.0-20050213/gcc/libgcov.c:139
#1 0x4018b820 in exit () from /lib/tls/libc.so.6
#2 0x40176b1a in __libc_start_main () from /lib/tls/libc.so.6
#3 0x08049031 in _start () at ../sysdeps/i386/elf/start.S:119
The test uses SCons as a build tool. But I give the build arguments here for
the 3.4.1 compiler:
/opt2/GNU/bin/g++-3.4.1 -O0 -g -D_REENTRANT -W -Wall -Wpointer-arith
-Wno-uninitialized -Woverloaded-virtual -Wcast-align -Wwrite-strings
-Wcomments -march=pentiumpro -DCOVERAGE -fprofile-arcs -ftest-coverage -Isrc
-c -o src/prog/.build/posix/coverage/main.o src/prog/main.cpp
/opt2/GNU/bin/g++-3.4.1 -g -Wl,-E -o bin/posix/coverage/prog
src/prog/.build/posix/coverage/main.o -Llib/posix/coverage -lstdc++ -lpthread
-lrt -ldl -lgcov
/opt2/GNU/bin/g++-3.4.1 -O0 -g -D_REENTRANT -W -Wall -Wpointer-arith
-Wno-uninitialized -Woverloaded-virtual -Wcast-align -Wwrite-strings
-Wcomments -march=pentiumpro -DCOVERAGE -fprofile-arcs -ftest-coverage -fPIC
-Isrc -c -o src/calc/.build/posix/coverage/calc.os src/calc/calc.cpp
/opt2/GNU/bin/g++-3.4.1 -g -Wl,-E -Wl,-soname=libcalc.so.1.0 -shared -o
lib/posix/coverage/libcalc.so src/calc/.build/posix/coverage/calc.os
-Llib/posix/coverage -lstdc++ -lpthread -lrt -ldl -lgcov
Lothar
--
Summary: executables created with -fprofile-arcs -ftest-coverage
segfault in gcov_exit ()
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: lothar at xcerla dot com
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19985
