Bug 71113
| Summary: | longstanding bug in /usr/include/expect.h | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Need Real Name <yarnall> |
| Component: | tcltk | Assignee: | Jens Petersen <petersen> |
| Status: | CLOSED RAWHIDE | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.3 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2002-08-12 12:56:17 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
|
Description
Need Real Name
2002-08-08 21:13:53 UTC
Could you give an explicit example how to reproduce this?
The following working for me:
% mkdir tmp; cd tmp
% cat > main.c <<EOF
#include <expect.h>
int
main (int argc, char *argv[])
{
return 0;
}
EOF
% gcc -lexpect main.c
% ./a.out
%
Sorry; I should have been more explicit...
You need a project that includes <expect.h> in multiple files to produce
multiple definitions. Also, I just did an experiment, and the C++ compiler
seems to mind, whereas the C compiler doesn't. Try this instead:
-----------------------------------------
(file1.cpp)
#include <iostream>
#include <expect.h>
using namespace std;
int foo();
int main()
{
cout << foo() << endl;
}
---------------------------------------------------
(file2.cpp)
#include <expect.h>
int foo()
{
return 42;
}
-----------------------------------------------------
% g++ -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.3 2.96-110)
% g++ -o exp file1.cpp file2.cpp -lexpect
/tmp/ccs329IM.o(.bss+0x0): multiple definition of `exp_readenv'
/tmp/ccNqm4kO.o(.bss+0x0): first defined here
collect2: ld returned 1 exit status
A followup: I found more recent versions of expect at the homepage (expect.nist.gov), which contains the same fix I use: % diff -c expect.h expect.new *** expect.h Thu Feb 28 16:16:08 2002 --- expect.new Thu Aug 8 16:48:40 2002 *************** *** 427,435 **** EXTERN int exp_console; /* redirect console */ #ifdef HAVE_SIGLONGJMP ! sigjmp_buf exp_readenv; /* for interruptable read() */ #else ! jmp_buf exp_readenv; /* for interruptable read() */ #endif /* HAVE_SIGLONGJMP */ EXTERN int exp_reading; /* whether we can longjmp or not */ --- 427,435 ---- EXTERN int exp_console; /* redirect console */ #ifdef HAVE_SIGLONGJMP ! EXTERN sigjmp_buf exp_readenv; /* for interruptable read() */ #else ! EXTERN jmp_buf exp_readenv; /* for interruptable read() */ #endif /* HAVE_SIGLONGJMP */ EXTERN int exp_reading; /* whether we can longjmp or not */ Thanks for the report. I updated expect to 5.38.0. |