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* [Bug c++/99389] New: [modules] bad serialization of data
@ 2021-03-04 19:26 nathan at gcc dot gnu.org
2021-03-05 13:30 ` [Bug c++/99389] " cvs-commit at gcc dot gnu.org
2021-03-05 13:32 ` nathan at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: nathan at gcc dot gnu.org @ 2021-03-04 19:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99389
Bug ID: 99389
Summary: [modules] bad serialization of data
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: nathan at gcc dot gnu.org
Target Milestone: ---
Triaging 99377 runs into this:
// bug_a.ii
template<typename _CharT>
class basic_string_view
{
public:
basic_string_view(const _CharT* __str) noexcept
{}
bool
empty() const noexcept
{ return !_M_len; }
private:
unsigned _M_len;
};
using string_view = basic_string_view<char>;
// bug_b.ii
export module hello;
import "bug_a.ii";
export inline bool Check (const string_view& n)
{
return !n.empty ();
}
// bug_c.ii
import hello;
int main ()
{
return Check ("World") ? 0 : 1;
}
./cc1plus -quiet -fmodule-header bug_a.ii && ./cc1plus -quiet -fmodules-ts
bug_b.ii && ./cc1plus -quiet -fmodules-ts bug_c.ii
In module imported at bug_c.ii:1:1:
hello: In function 'int main()':
hello: error: failed to read compiled module cluster 1: Bad file data
hello: note: compiled module file is 'gcm.cache/hello.gcm'
hello: error: failed to read compiled module cluster 2: Bad file data
bug_c.ii:5:10: fatal error: failed to load binding '::Check@hello'
5 | return Check ("World") ? 0 : 1;
| ^~~~~
we failed to find _M_len as that instantiation's not (yet?) loaded
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2021-03-04 19:26 [Bug c++/99389] New: [modules] bad serialization of data nathan at gcc dot gnu.org
2021-03-05 13:30 ` [Bug c++/99389] " cvs-commit at gcc dot gnu.org
2021-03-05 13:32 ` nathan at gcc dot gnu.org
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