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Fix testroot.pristine creation copying dynamic linker.

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This patch addresses an issue reported in
<https://sourceware.org/ml/libc-alpha/2019-07/msg00661.html> where the
creation of testroot.pristine, on encountering
LD_TRACE_LOADED_OBJECTS=1 of the form

        libc.so.6 => /scratch/jmyers/glibc/mbs/obj/glibc-8-0-mips64-linux-gnu-x86_64-linux-gnu/default/libc.so.6 (0x772dd000)
        /lib32/ld.so.1 => /scratch/jmyers/glibc/mbs/obj/glibc-8-0-mips64-linux-gnu-x86_64-linux-gnu/default/elf/ld.so.1 (0x7747b000)

tries to copy /lib32/ld.so.1 (which does not exist) into the testroot
instead of copying the path on the RHS of "=>", which does exist,
because the Makefile logic assumes that the path on such a line with
'/' should be copied, when if there are such paths on both the LHS and
the RHS of "=>", only the one on the RHS necessarily exists and so
only that should be copied.  The patch follows the approach suggested
by DJ in <https://sourceware.org/ml/libc-alpha/2019-07/msg00662.html>,
with the suggestion from Andreas in
<https://sourceware.org/ml/libc-alpha/2019-10/msg00514.html> of a
single sed command in place of pipeline of grep and three sed
commands.

Tested for x86_64, with and without --enable-hardcoded-path-in-tests;
a previous version with multiple sed commands, implementing the same
logic, also tested for MIPS, with and without
--enable-hardcoded-path-in-tests, to confirm it fixes the original
problem.

Co-authored-by: DJ Delorie <dj@redhat.com>
This commit is contained in:
Joseph Myers 2019-10-22 20:24:10 +00:00
parent d0007dc53c
commit 7db1fe38de
1 changed files with 2 additions and 2 deletions
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4
Makefile
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@ -564,7 +564,7 @@ ifeq ($(run-built-tests),yes)
for dso in `$(test-wrapper-env) LD_TRACE_LOADED_OBJECTS=1 \
$(rtld-prefix) \
$(objpfx)testroot.pristine/bin/sh \
| grep / | sed 's/^[^/]*//' | sed 's/ .*//'` ;\
| sed -n '/\//{s@.*=> /@/@;s/^[^/]*//;s/ .*//p;}'` ;\
do \
test -d `dirname $(objpfx)testroot.pristine$$dso` || \
mkdir -p `dirname $(objpfx)testroot.pristine$$dso` ;\
@ -573,7 +573,7 @@ ifeq ($(run-built-tests),yes)
for dso in `$(test-wrapper-env) LD_TRACE_LOADED_OBJECTS=1 \
$(rtld-prefix) \
$(objpfx)support/$(LINKS_DSO_PROGRAM) \
| grep / | sed 's/^[^/]*//' | sed 's/ .*//'` ;\
| sed -n '/\//{s@.*=> /@/@;s/^[^/]*//;s/ .*//p;}'` ;\
do \
test -d `dirname $(objpfx)testroot.pristine$$dso` || \
mkdir -p `dirname $(objpfx)testroot.pristine$$dso` ;\