Bug 149492
| Summary: | g++ seg fault for sizeof(std::vector) | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Robert M. Day <dayrm> |
| Component: | gcc3 | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3.0 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2005-05-18 13:42:38 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: | |||
That testcase is invalid, std::vector is a template, so you need to supply
template arguments for it.
You want something like this:
#include <iostream>
#include <vector>
int
main ()
{
std::cout << sizeof(std::vector<int>) << std::endl;
}
G++ 3.4.x and GCC HEAD correctly diagnose this as an error:
g++ -o /tmp/149492{,.C}
/tmp/149492.C: In function `int main()':
/tmp/149492.C:6: error: missing template arguments before ')' token
3.3.x issues diagnostic instead of segfaulting too, so I'll look into fixing
this.
This was apparently fixed by PR c++/10558 fix on gcc-3_3-branch and a backported fix for that seems to fix it on gcc-3_2-rhl8-branch as well. Will test some more and probably include in RHEL3 U5. Thanks for the quick response and the explanation. Should be fixed in gcc-c++-3.2.3-52. An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2005-258.html |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.3) Gecko/20040924 Description of problem: This C++ code: // START CODE #include <iostream> #include <vector> main() { std::cout << sizeof(std::vector) << endl; } // END CODE causes a seg fault when compiled as follows; command$ g++ sizeofvec.cpp sizeofvec.cpp: In function `int main()': sizeofvec.cpp:6: internal error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://bugzilla.redhat.com/bugzilla/> for instructions. Version-Release number of selected component (if applicable): gcc-c++-3.2.3-49 How reproducible: Always Steps to Reproduce: 1. Compile the code shown above. 2. 3. Actual Results: Seq fault with error message as shown above. Expected Results: Compilation (or more informative error message if code is bad). Additional info: My system: command$ uname -a Linux ***** 2.4.21-27.0.1.ELsmp #1 SMP Mon Dec 20 18:47:45 EST 2004 i686 i686 i386 GNU/Linux gcc version: command$ g++ -v Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2.3/specs Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-__cxa_atexit --host=i386-redhat-linux Thread model: posix gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-49)