https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80479
Bug ID: 80479
Summary: endless stream of valgrind errors when using trunk
build with trunk on ppc64le
Product: gcc
Version: 7.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
Target Milestone: ---
When I build trunk with trunk on ppc64le (--enable-valgrind-annotations
--disable-bootstrap) the resulting compiler produces many valgrind errors, even
on simple testcases. Building trunk with an older release works fine.
trippels@gcc2-power8 ~ % valgrind --track-origins=yes --trace-children=yes
~/gcc_test/usr/local/bin/g++ -O2 bench.cpp
==140970== Memcheck, a memory error detector
==140970== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==140970== Using Valgrind-3.12.0 and LibVEX; rerun with -h for copyright info
==140970== Command: /home/trippels/gcc_test/usr/local/bin/g++ -O2 bench.cpp
==140970==
==140970== Invalid read of size 4
==140970== at 0x100A9630: make_relative_prefix_1
(make-relative-prefix.c:356)
==140970== by 0x1000CFC7: process_command(unsigned int, cl_decoded_option*)
(gcc.c:4222)
==140970== by 0x10019C5F: driver::set_up_specs() const (gcc.c:7416)
==140970== by 0x100037BF: driver::main(int, char**) (gcc.c:7228)
==140970== by 0x10003B97: main (gcc-main.c:46)
==140970== Address 0x43bd2b4 is 2 bytes after a block of size 2 alloc'd
==140970== at 0x4083E0C: malloc (vg_replace_malloc.c:299)
==140970== by 0x100A9397: save_string (make-relative-prefix.c:108)
==140970== by 0x100A9397: split_directories (make-relative-prefix.c:174)
==140970== by 0x100A951B: make_relative_prefix_1
(make-relative-prefix.c:325)
==140970== by 0x1000CFC7: process_command(unsigned int, cl_decoded_option*)
(gcc.c:4222)
==140970== by 0x10019C5F: driver::set_up_specs() const (gcc.c:7416)
==140970== by 0x100037BF: driver::main(int, char**) (gcc.c:7228)
==140970== by 0x10003B97: main (gcc-main.c:46)
==140970==
==140970== Invalid read of size 4
==140970== at 0x100A9634: make_relative_prefix_1
(make-relative-prefix.c:356)
==140970== by 0x1000CFC7: process_command(unsigned int, cl_decoded_option*)
(gcc.c:4222)
==140970== by 0x10019C5F: driver::set_up_specs() const (gcc.c:7416)
==140970== by 0x100037BF: driver::main(int, char**) (gcc.c:7228)
==140970== by 0x10003B97: main (gcc-main.c:46)
==140970== Address 0x43bd474 is 2 bytes after a block of size 2 alloc'd
==140970== at 0x4083E0C: malloc (vg_replace_malloc.c:299)
==140970== by 0x100A9397: save_string (make-relative-prefix.c:108)
==140970== by 0x100A9397: split_directories (make-relative-prefix.c:174)
==140970== by 0x100A95CF: make_relative_prefix_1
(make-relative-prefix.c:348)
==140970== by 0x1000CFC7: process_command(unsigned int, cl_decoded_option*)
(gcc.c:4222)
==140970== by 0x10019C5F: driver::set_up_specs() const (gcc.c:7416)
==140970== by 0x100037BF: driver::main(int, char**) (gcc.c:7228)
==140970== by 0x10003B97: main (gcc-main.c:46)
==140970==
==140970== Conditional jump or move depends on uninitialised value(s)
==140970== at 0x100A963C: make_relative_prefix_1
(make-relative-prefix.c:356)
==140970== by 0x1000CFC7: process_command(unsigned int, cl_decoded_option*)
(gcc.c:4222)
==140970== by 0x10019C5F: driver::set_up_specs() const (gcc.c:7416)
==140970== by 0x100037BF: driver::main(int, char**) (gcc.c:7228)
==140970== by 0x10003B97: main (gcc-main.c:46)
==140970==
==140970== Conditional jump or move depends on uninitialised value(s)
==140970== at 0x100A9648: make_relative_prefix_1
(make-relative-prefix.c:356)
==140970== by 0x1000CFC7: process_command(unsigned int, cl_decoded_option*)
(gcc.c:4222)
==140970== by 0x10019C5F: driver::set_up_specs() const (gcc.c:7416)
==140970== by 0x100037BF: driver::main(int, char**) (gcc.c:7228)
==140970== by 0x10003B97: main (gcc-main.c:46)
...
==140970== ERROR SUMMARY: 98 errors from 21 contexts (suppressed: 0 from 0)
