https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94311
Bug ID: 94311
Summary: LTO produces line info entries with invalid line
numbers
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Unfortunately this doesn't have a simple reproducer, but can be seen when
compiling valgrind:
$ wget https://sourceware.org/pub/valgrind/valgrind-3.15.0.tar.bz2
$ tar -xf valgrind-3.15.0.tar.bz2
$ cd valgrind-3.15
$ ./autogen.sh
$ ./configure --prefix=`pwd`/install --enable-only64bit --enable-lto
$ make install
then
$ ./install/bin/valgrind -q date
produces warnings like
==14497== warning: Can't handle line info entry with line number 177277754
greater than 1048575
==14497== (Nb: this message is only shown once)
==14497== warning: Can't handle inlined call info entry with line number
177277750 greater than 1048575
==14497== (Nb: this message is only shown once)
Tue 24 Mar 2020 03:54:34 PM EDT
while with GCC 8 these warnings weren't issued.
