[binutils-gdb] [gdb/testsuite] Fix dw2-ranges-base.exp FAIL with lib debuginfo

[Tom de Vries <vries@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=307eafd8df3ec820bb62a71324aeed06b86ec050

commit 307eafd8df3ec820bb62a71324aeed06b86ec050
Author: Tom de Vries <tdevries@suse.de>
Date:   Thu Mar 12 11:58:20 2020 +0100

    [gdb/testsuite] Fix dw2-ranges-base.exp FAIL with lib debuginfo
    
    When running test-case gdb.dwarf2/dw2-ranges-base.exp with debuginfo for
    various libs installed, I run into:
    ...
    (gdb) maint info line-table^M
      ...
    objfile: /usr/lib/debug/lib64/ld-2.26.so-2.26-lp151.18.7.x86_64.debug \
      ((struct objfile *) 0x1a9d7f0)^M
    compunit_symtab: ((struct compunit_symtab *) 0x2061090)^M
    symtab: /usr/src/debug/glibc-2.26-lp151.18.7.x86_64/sysdeps/generic/\
      dl-fcntl.h ((struct symtab *) 0x2182660)^M
    linetable: ((struct linetable *) 0x0):^M
    No line table.^M
    (gdb) FAIL: gdb.dwarf2/dw2-ranges-base.exp: count END markers in line table
    ...
    
    The test-case intends to count 3 END markers in the line table for
    gdb.dwarf2/dw2-ranges-base.c:
    ...
    symtab: /data/gdb_versions/devel/binutils-gdb.git/gdb/testsuite/gdb.dwarf2/\
      dw2-ranges-base.c ((struct symtab *) 0x2a7e8c0)^M
    linetable: ((struct linetable *) 0x2a7ea60):^M
    INDEX    LINE ADDRESS IS-STMT^M
    0          31 0x00000000004004a7 Y^M
    1          21 0x00000000004004ae Y^M
    2         END 0x00000000004004ae Y^M
    3          11 0x00000000004004ba Y^M
    4         END 0x00000000004004ba Y^M
    5         END 0x00000000004004c6 Y^M
    ...
    but ends up counting 70+ END markers for all line tables.
    
    Fix this by limiting the line tables emitted by the maint info line-table
    command.
    
    Tested on x86_64-linux.
    
    gdb/testsuite/ChangeLog:
    
    2020-03-12  Tom de Vries  <tdevries@suse.de>
    
            * gdb.dwarf2/dw2-ranges-base.exp: Limit "maint info line-table" to
            gdb.dwarf2/dw2-ranges-base.c.

Diff:
---
 gdb/testsuite/ChangeLog                      | 5 +++++
 gdb/testsuite/gdb.dwarf2/dw2-ranges-base.exp | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 7e9e490c61e..5b67cb1d580 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2020-03-12  Tom de Vries  <tdevries@suse.de>
+
+	* gdb.dwarf2/dw2-ranges-base.exp: Limit "maint info line-table" to
+	gdb.dwarf2/dw2-ranges-base.c.
+
 2020-03-12  Tom de Vries  <tdevries@suse.de>
 
 	* gdb.linespec/explicit.exp: Fix "complete non-unique file name" test
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-ranges-base.exp b/gdb/testsuite/gdb.dwarf2/dw2-ranges-base.exp
index 7f7301502ab..c1a3ab155fd 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-ranges-base.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-ranges-base.exp
@@ -144,7 +144,7 @@ gdb_test "info line frame3" \
 
 # Ensure that the line table correctly tracks the end of sequence markers.
 set end_seq_count 0
-gdb_test_multiple "maint info line-table" \
+gdb_test_multiple "maint info line-table gdb.dwarf2/dw2-ranges-base.c" \
     "count END markers in line table" {
 	-re "^$decimal\[ \t\]+$decimal\[ \t\]+$hex\(\[ \t\]+Y\)?\r\n" {
 	    exp_continue