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* [Bug c++/29215] New: Can't find nested type under strange circumstances (outer namespace or unrelated code built without debug info) @ 2022-05-31 20:53 dblaikie at gmail dot com 2022-10-21 19:14 ` [Bug c++/29215] " tromey at sourceware dot org 2022-10-21 20:16 ` dblaikie at gmail dot com 0 siblings, 2 replies; 3+ messages in thread From: dblaikie at gmail dot com @ 2022-05-31 20:53 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=29215 Bug ID: 29215 Summary: Can't find nested type under strange circumstances (outer namespace or unrelated code built without debug info) Product: gdb Version: 10.1 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c++ Assignee: unassigned at sourceware dot org Reporter: dblaikie at gmail dot com Target Milestone: --- a.cpp: ``` void f1(); int main() { f1(); } ``` b.cpp: ``` namespace x { struct t1 { t1(); struct t2 { t2(); }; }; } x::t1::t1() { } x::t1::t2::t2() { } void f1() { } ``` Build the first without debug info, and the second with debug info and pubnames/gdb-index: ``` $ clang++ -c a.cpp $ clang++ -c b.cpp -g -ggnu-pubnames -Wl,--gdb-index $ clang++ a.o b.o -fuse-ld=lld $ gdb -ex "ptype x::t1::t2" -ex "ptype x::t1" -ex quit a.out No type "t1" within class or namespace "x". type = struct x::t1 { ... ``` But if you add `-g -ggnu-pubnames` to a.cpp, or if you remove the namespace, the name lookups do seem to work. (reproduces with GCC-built DWARF too) -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/29215] Can't find nested type under strange circumstances (outer namespace or unrelated code built without debug info) 2022-05-31 20:53 [Bug c++/29215] New: Can't find nested type under strange circumstances (outer namespace or unrelated code built without debug info) dblaikie at gmail dot com @ 2022-10-21 19:14 ` tromey at sourceware dot org 2022-10-21 20:16 ` dblaikie at gmail dot com 1 sibling, 0 replies; 3+ messages in thread From: tromey at sourceware dot org @ 2022-10-21 19:14 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=29215 Tom Tromey <tromey at sourceware dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed| |2022-10-21 Ever confirmed|0 |1 CC| |tromey at sourceware dot org Status|UNCONFIRMED |NEW --- Comment #1 from Tom Tromey <tromey at sourceware dot org> --- This is a funny one. The problem is: (gdb) show lang The current source language is "auto; currently c". This happens because 'main' does not have debuginfo and so the current context is assumed to be C. Doing "set lang c++" lets this work. So probably the real question is why "x::t1" works :-) Confirming this bug, but TBH I don't know if it is fixable in a reasonable way. Arguably maybe C and C++ should be closer together here, though in gdb "C" is also used as a fallback when the language isn't known, so this may have adverse consequences. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/29215] Can't find nested type under strange circumstances (outer namespace or unrelated code built without debug info) 2022-05-31 20:53 [Bug c++/29215] New: Can't find nested type under strange circumstances (outer namespace or unrelated code built without debug info) dblaikie at gmail dot com 2022-10-21 19:14 ` [Bug c++/29215] " tromey at sourceware dot org @ 2022-10-21 20:16 ` dblaikie at gmail dot com 1 sibling, 0 replies; 3+ messages in thread From: dblaikie at gmail dot com @ 2022-10-21 20:16 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=29215 --- Comment #2 from David Blaikie <dblaikie at gmail dot com> --- Ah, thanks - FWIW, this wasn't found in the wild, just something I stumbled across while reducing/understanding https://sourceware.org/bugzilla/show_bug.cgi?id=29219 so I wouldn't find this to be terribly important/high priority. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-10-21 20:16 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2022-05-31 20:53 [Bug c++/29215] New: Can't find nested type under strange circumstances (outer namespace or unrelated code built without debug info) dblaikie at gmail dot com 2022-10-21 19:14 ` [Bug c++/29215] " tromey at sourceware dot org 2022-10-21 20:16 ` dblaikie at gmail dot com
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