tests: parse inode in /proc/pid/maps/correctly in run-backtrace-data.sh

The backtrace-data.c parsed the inode in /proc/pid/maps with
format "%*x".
This caused failure if inode is big. For example,
  7f269223d000-7f269226b000 r-xp 00000000 00:50 10224326387095067468       /home/...

The error likes below:
  -bash-4.4$ cat run-backtrace-data.sh.log
  backtrace-data: /home/engshare/elfutils/0.174/src/elfutils-0.174/tests/backtrace-data.c:110:
    maps_lookup: Assertion `errno == 0' failed.
  /home/engshare/elfutils/0.174/src/elfutils-0.174/tests/test-subr.sh: line 84:
    3123578 Aborted                 (core dumped)
    LD_LIBRARY_PATH="${built_library_path}${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH" $VALGRIND_CMD "$@"
  data: no main
  -bash-4.4$
The reason is errno is ERANGE.

Fix the test with inode format string "%*u" as inode here is presented
as decimal numbers.

Suggested-by: Mark Wielaard <mark@klomp.org>
Signed-off-by: Yonghong Song <yhs@fb.com>

diff --git a/tests/ChangeLog b/tests/ChangeLog
index 9b5899675a7f1160834550b88027f0f3c947903c..c91764fb322813ffafbe9b8923bb6850892e4052 100644 (file)
--- a/tests/ChangeLog
+++ b/tests/ChangeLog
@@ -1,3 +1,8 @@
+2019-01-29  Yonghong Song  <yhs@fb.com>
+
+       * backtrace-data.c (maps_lookup): Use %*u, not %*x, to parse
+       inode number.
+
 2019-01-18  Ulf Hermann <ulf.hermann@qt.io>
 
        * run-annobingroup.sh: Use different files for strip output.

diff --git a/tests/backtrace-data.c b/tests/backtrace-data.c
index 3a91c6645e4e24eb9952840bd95e8013fc355048..b389d6aff1b073c61e80c222639b1c514ac32bde 100644 (file)
--- a/tests/backtrace-data.c
+++ b/tests/backtrace-data.c
@@ -106,7 +106,7 @@ maps_lookup (pid_t pid, Dwarf_Addr addr, GElf_Addr *basep)
     {
       // 37e3c22000-37e3c23000 rw-p 00022000 00:11 49532 /lib64/ld-2.14.90.so */
       unsigned long start, end, offset;
-      i = fscanf (f, "%lx-%lx %*s %lx %*x:%*x %*x", &start, &end, &offset);
+      i = fscanf (f, "%lx-%lx %*s %lx %*x:%*x %*u", &start, &end, &offset);
       assert (errno == 0);
       if (i != 3)
           break;