[Cmake] cmake seems to crash because 0x0 is used in place of ""

[Wheeler, Fred (CRD)]

I'm getting cmake to core dump.  I hope this report helps.  My guess
is that def is being set to 0 in cmIfCommand.cxx, but that should be
interpreted as an empty string.  I can fix the problem in Solaris with
"export LD_PRELOAD=0 at 0.so.1" which puts an empty string \0 at memory
location 0x0 to solve such problems.

Below is some output from gdb.

Fred Wheeler

0% gdb $SR_CMAKE core
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This GDB was configured as "sparc-sun-solaris2.7"...
Core was generated by `/no_backup/wheeler/prj/sr/cmake_usr/bin/cmake
/no_backup/wheeler/prj/sr/vxl_src'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /home/wheeler/usr/local/sparc-sun-solaris2.7/lib/libstdc++.so.3...done.
Loaded symbols for /home/wheeler/usr/local/sparc-sun-solaris2.7/lib/libstdc++.so.3
Reading symbols from /usr/lib/libm.so.1...done.
Loaded symbols for /usr/lib/libm.so.1
Reading symbols from /home/wheeler/usr/local/sparc-sun-solaris2.7/lib/libgcc_s.so.1...done.
Loaded symbols for /home/wheeler/usr/local/sparc-sun-solaris2.7/lib/libgcc_s.so.1
Reading symbols from /usr/lib/libc.so.1...done.
Loaded symbols for /usr/lib/libc.so.1
Reading symbols from /usr/lib/libdl.so.1...done.
Loaded symbols for /usr/lib/libdl.so.1
Reading symbols from /usr/platform/SUNW,Sun-Blade-1000/lib/libc_psr.so.1...
done.
Loaded symbols for /usr/platform/SUNW,Sun-Blade-1000/lib/libc_psr.so.1
#0  0xff1ce5b0 in ?? ()
(gdb) where
#0  0xff1ce5b0 in ?? ()
#1  0x0005dcb8 in cmIfCommand::InitialPass(std::vector<std::string, std::allocator<std::string> >
const&) (this=0x1aa578, args=@0x19290c)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmIfCommand.cxx:173
#2  0x00038a64 in cmMakefile::ExecuteCommand(std::string&, std::vector<std::string,
std::allocator<std::string> > const&) (this=0x19b948, name=@0x192908, 
    arguments=@0x19290c)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmMakefile.cxx:238
#3  0x00038e94 in cmMakefile::ReadListFile(char const*, char const*) (
    this=0x19b948, 
    filename=0x175e1c "/no_backup/wheeler/prj/sr/vxl_src/CMakeLists.txt", 
    external=0x19290c "")
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmMakefile.cxx:350
#4  0x0005e4a0 in cmIncludeCommand::InitialPass(std::vector<std::string, std::allocator<std::string>
> const&) (this=0x1aa548, argsIn=@0xffbee2cc)
    at
/home/wheeler/usr/local/sparc-sun-solaris2.7/lib/gcc-lib/../../../include/g++-v3/bits/basic_string.h:
208
#5  0x00038a64 in cmMakefile::ExecuteCommand(std::string&, std::vector<std::string,
std::allocator<std::string> > const&) (this=0x19b948, name=@0x1a77b0, 
    arguments=@0x1a77b4)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmMakefile.cxx:238
#6  0x00038e94 in cmMakefile::ReadListFile(char const*, char const*) (
    this=0x19b948, 
    filename=0x175dcc "/no_backup/wheeler/prj/sr/vxl_src/vxl/vul/io/tests/CMakeLists.txt",
external=0x1a77b4 "")
---Type <return> to continue, or q <return> to quit---
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmMakefile.cxx:350
#7  0x0003f480 in cmMakefile::FindSubDirectoryCMakeListsFiles(std::vector<cmMakefile*,
std::allocator<cmMakefile*> >&) (this=0x19a538, makefiles=@0xffbee788)
    at
/home/wheeler/usr/local/sparc-sun-solaris2.7/lib/gcc-lib/../../../include/g++-v3/bits/basic_string.h:
714
#8  0x0003f48c in cmMakefile::FindSubDirectoryCMakeListsFiles(std::vector<cmMakefile*,
std::allocator<cmMakefile*> >&) (this=0x199610, makefiles=@0xffbee788)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmMakefile.cxx:1137
#9  0x0003f48c in cmMakefile::FindSubDirectoryCMakeListsFiles(std::vector<cmMakefile*,
std::allocator<cmMakefile*> >&) (this=0x1885d8, makefiles=@0xffbee788)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmMakefile.cxx:1137
#10 0x0003f48c in cmMakefile::FindSubDirectoryCMakeListsFiles(std::vector<cmMakefile*,
std::allocator<cmMakefile*> >&) (this=0xffbeea20, makefiles=@0xffbee788)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmMakefile.cxx:1137
#11 0x00092914 in cmUnixMakefileGenerator::RecursiveGenerateCacheOnly() (
    this=0x130238)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmUnixMakefileGenerator.cxx:1333
#12 0x0008733c in cmUnixMakefileGenerator::GenerateMakefile() (this=0x130238)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmUnixMakefileGenerator.cxx:115
#13 0x0003972c in cmMakefile::GenerateMakefile() (this=0xffbeea20)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmMakefile.cxx:437
#14 0x00034060 in cmake::Generate(std::vector<std::string, std::allocator<std::string> > const&,
bool) (this=0xffbeebb8, args=@0xffbeebc0, buildMakefiles=true)
---Type <return> to continue, or q <return> to quit---
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmake.cxx:424
#15 0x00030f50 in main (ac=2, av=0xffbeec44)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmakemain.cxx:23
(gdb) up
#1  0x0005dcb8 in cmIfCommand::InitialPass(std::vector<std::string, std::allocator<std::string> >
const&) (this=0x1aa578, args=@0x19290c)
    at /no_backup/wheeler/prj/sr/cmake_src/Source/cmIfCommand.cxx:173
173         if (!regEntry.find(def))
(gdb) print def
$1 = 0x0


--
Fred Wheeler, GE CRD, KWC-303
Phone: 518-387-7225 (GE Internal Dialcom: 8*833-7225)
Fax:   518-387-4042 (GE Internal Dialcom: 8*833-4042)