[Bug c++/88897] New: Bogus maybe-uninitialized warning on class field
rafael at espindo dot la
gcc-bugzilla@gcc.gnu.org
Thu Jan 17 20:58:00 GMT 2019
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88897
Bug ID: 88897
Summary: Bogus maybe-uninitialized warning on class field
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rafael at espindo dot la
Target Milestone: ---
Created attachment 45452
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45452&action=edit
testcase
Compiling the attached testcase with "g++ -c -O1 -Wall test.ii" produces
test.ii:631:7: warning: ‘<anonymous>.seastar::temporary_buffer::_buffer’ may be
used uninitialized in this function [-Wmaybe-uninitialized]
class temporary_buffer {
But in the reduced testcase the only constructor of temporary_buffer is out of
line, so the compiler has no way of knowing if it is initialized or not.
The warning goes away with -O2 or with very minor changes to the source code.
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