Bug 1076690
| Summary: | Python Exception <type 'exceptions.IndexError'> list index out of range: | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Mark Wielaard <mjw> |
| Component: | gcc | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED ERRATA | QA Contact: | Michael Petlan <mpetlan> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.0 | CC: | jakub, jan.kratochvil, law, mcermak, mnewsome, mpetlan, mpolacek, ohudlick, pmuldoon |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | All | ||
| Whiteboard: | |||
| Fixed In Version: | gcc-4.8.5-6.el7 | Doc Type: | No Doc Update |
| Doc Text: |
undefined
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-11-04 06:25:18 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1110700, 1191021 | ||
This request was not resolved in time for the current release. Red Hat invites you to ask your support representative to propose this request, if still desired, for consideration in the next release of Red Hat Enterprise Linux. Here's a small test case:
$ cat t.cpp && gdb -batch -q -ex "b foo" -ex "set python print-stack full" -ex "run" -ex "bt" a.out
#include <map>
typedef std::map<int, void*> M;
M::size_type foo (M &m)
{
return m.size ();
}
int main (void) {
M m;
m[1] = (void*)1;
foo (m);
}
Breakpoint 1 at 0x10000a1c: file t.cpp, line 7.
Breakpoint 1, foo (m=Traceback (most recent call last):
File "/lib64/../share/gcc-4.8.3/python/libstdcxx/v6/printers.py", line 482, in children
rep_type = find_type(self.val.type, '_Rep_type')
File "/lib64/../share/gcc-4.8.3/python/libstdcxx/v6/printers.py", line 96, in find_type
field = typ.fields()[0]
IndexError: list index out of range
std::map with 1 elements) at t.cpp:7
7 return m.size ();
#0 foo (m=Traceback (most recent call last):
File "/lib64/../share/gcc-4.8.3/python/libstdcxx/v6/printers.py", line 482, in children
rep_type = find_type(self.val.type, '_Rep_type')
File "/lib64/../share/gcc-4.8.3/python/libstdcxx/v6/printers.py", line 96, in find_type
field = typ.fields()[0]
IndexError: list index out of range
std::map with 1 elements) at t.cpp:7
#1 0x0000000010000ab0 in main () at t.cpp:15
I should have mentioned that the problem can be reproduced on both ppc64 and ppc64le with the stock RHEL 7.1 GCC (with no special options other than -g) and GDB. I couldn't reproduce it on Fedora 21 x86_64 with the stock tool chain and I am yet to try RHEL 7.1 x86_64. The same problem can be reproduced on RHEL 7.1 x86_64. It's fixed by libstdc++ commit df1ac917c9ce90beb8c3804c2d92cb47b337de30 upstream. The relevant bugs are GDB/15195 and libstdc++/53477. The bug affects other targets besides powerpc. test fails with gcc-4.8.5-4.el7 test passes for gcc-4.8.5-9.el7 VERIFIED Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2016-2433.html |
Description of problem: While debugging some Python Exception occurs. Breakpoint 1, dwarf_builder::build (this=0x11b8a8e0, sess=..., Python Exception <type 'exceptions.IndexError'> list index out of range: base=0x11aee390, location=0x119abc70, parameters=std::map with 2 elements, finished_results=std::vector of length 0, capacity 0) at tapsets.cxx:7215 7215 { (gdb) set python print-stack full (gdb) bt #0 dwarf_builder::build (this=0x11b8a8e0, sess=..., base=0x11aee390, location=0x119abc70, Traceback (most recent call last): File "/lib64/../share/gcc-4.8.2/python/libstdcxx/v6/printers.py", line 438, in children rep_type = find_type(self.val.type, '_Rep_type') File "/lib64/../share/gcc-4.8.2/python/libstdcxx/v6/printers.py", line 52, in find_type field = typ.fields()[0] IndexError: list index out of range parameters= std::map with 2 elements, finished_results=std::vector of length 0, capacity 0) at tapsets.cxx:7215 Version-Release number of selected component (if applicable): gdb-7.6.1-51.el7.ppc64 gcc-4.8.2-15.el7.ppc64