debugedit/0001-tests-Handle-zero-directory-entry-in-.debug_line-DWA.patch

From ae27211cbbfb63a0ad3c141cd1310d7f583ec40e Mon Sep 17 00:00:00 2001
From: Mark Wielaard <mark@klomp.org>
Date: Fri, 30 Jul 2021 18:09:46 +0200
Subject: [PATCH] tests: Handle zero directory entry in .debug_line DWARF5
 debugedit.at

We were skipping the zero directory entry, because it was always
the same as the directory entry at position one. But that isn't
true anymore with gcc 11.2.1. There the zero dir entry is unique.
Fix the debugedit.at .debug_line testcases using DWARF5 to also
include dir entry zero.

Signed-off-by: Mark Wielaard <mark@klomp.org>
---
 configure.ac       | 14 ++++++++++++++
 tests/atlocal.in   |  1 +
 tests/debugedit.at | 18 ++++++++++++------
 3 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/configure.ac b/configure.ac
index e5c9230..6a53365 100644
--- a/configure.ac
+++ b/configure.ac
@@ -87,6 +87,20 @@ CFLAGS="$save_CFLAGS"
 GDWARF_5_FLAG=$ac_cv_gdwarf_5
 AC_SUBST([GDWARF_5_FLAG])
 
+AC_CACHE_CHECK([whether -gdwarf-5 produced DWARF5 .debug_line], ac_cv_dwarf_5_debugline, [dnl
+save_CFLAGS="$CFLAGS"
+CFLAGS="-gdwarf-5"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i=0;]],[[/* empty main */]])],
+  [if $READELF --debug-dump=line conftest.o 2>&1 | \
+   grep "DWARF Version:" 2>&1 | grep "5" > /dev/null 2>&1; \
+     then ac_cv_dwarf_5_debugline=yes; \
+     else ac_cv_dwarf_5_debugline=no; fi],
+  ac_cv_dwarf_5_debugline=no)
+CFLAGS="$save_CFLAGS"
+])
+DWARF_5_DEBUGLINE=$ac_cv_dwarf_5_debugline
+AC_SUBST([DWARF_5_DEBUGLINE])
+
 AC_CACHE_CHECK([whether gcc supports -gz=none], ac_cv_gz_none, [dnl
 save_CFLAGS="$CFLAGS"
 CFLAGS="-gz=none"
diff --git a/tests/atlocal.in b/tests/atlocal.in
index 8399f8d..d916301 100644
--- a/tests/atlocal.in
+++ b/tests/atlocal.in
@@ -13,3 +13,4 @@ READELF="@READELF@"
 
 GDWARF_5_FLAG=@GDWARF_5_FLAG@
 GZ_NONE_FLAG=@GZ_NONE_FLAG@
+DWARF_5_DEBUGLINE=@DWARF_5_DEBUGLINE@
diff --git a/tests/debugedit.at b/tests/debugedit.at
index 0311d26..725e68e 100644
--- a/tests/debugedit.at
+++ b/tests/debugedit.at
@@ -488,10 +488,12 @@ AT_CLEANUP
 AT_SETUP([debugedit .debug_line objects DWARF5])
 AT_KEYWORDS([debuginfo] [debugedit])
 AT_SKIP_IF([test "$GDWARF_5_FLAG" = "no"])
+AT_SKIP_IF([test "$DWARF_5_DEBUGLINE" = "no"])
 DEBUGEDIT_SETUP([-gdwarf-5])
 
 AT_DATA([expout],
 [foo/bar/baz
+foo/bar/baz/subdir_bar
 foo/bar/baz/subdir_headers
 ])
 
@@ -500,8 +502,8 @@ AT_CHECK([[debugedit -b $(pwd) -d /foo/bar/baz ./subdir_bar/bar.o]])
 AT_CHECK([[debugedit -b $(pwd) -d /foo/bar/baz ./baz.o]])
 AT_CHECK([[
 $READELF --debug-dump=line foo.o subdir_bar/bar.o baz.o \
-        | grep -A5 "The Directory Table" | grep "^  [123]" \
-	| cut -f2- -d/ | grep ^foo/ | sort
+	| grep -A5 "The Directory Table" | grep "^  [0123]" \
+	| cut -f2- -d/ | grep ^foo/ | sort -u
 ]],[0],[expout])
 
 AT_CLEANUP
@@ -535,18 +537,20 @@ AT_CLEANUP
 AT_SETUP([debugedit .debug_line partial DWARF5])
 AT_KEYWORDS([debuginfo] [debugedit])
 AT_SKIP_IF([test "$GDWARF_5_FLAG" = "no"])
+AT_SKIP_IF([test "$DWARF_5_DEBUGLINE" = "no"])
 DEBUGEDIT_SETUP([-gdwarf-5])
 
 AT_DATA([expout],
 [foo/bar/baz
+foo/bar/baz/subdir_bar
 foo/bar/baz/subdir_headers
 ])
 
 AT_CHECK([[debugedit -b $(pwd) -d /foo/bar/baz ./foobarbaz.part.o]])
 AT_CHECK([[
 $READELF --debug-dump=line ./foobarbaz.part.o \
-        | grep -A5 "The Directory Table" | grep "^  [123]" \
-	| cut -f2- -d/ | grep ^foo/ | sort
+	| grep -A5 "The Directory Table" | grep "^  [0123]" \
+	| cut -f2- -d/ | grep ^foo/ | sort -u
 ]],[0],[expout])
 
 AT_CLEANUP
@@ -580,18 +584,20 @@ AT_CLEANUP
 AT_SETUP([debugedit .debug_line exe DWARF5])
 AT_KEYWORDS([debuginfo] [debugedit])
 AT_SKIP_IF([test "$GDWARF_5_FLAG" = "no"])
+AT_SKIP_IF([test "$DWARF_5_DEBUGLINE" = "no"])
 DEBUGEDIT_SETUP([-gdwarf-5])
 
 AT_DATA([expout],
 [foo/bar/baz
+foo/bar/baz/subdir_bar
 foo/bar/baz/subdir_headers
 ])
 
 AT_CHECK([[debugedit -b $(pwd) -d /foo/bar/baz ./foobarbaz.exe]])
 AT_CHECK([[
 $READELF --debug-dump=line ./foobarbaz.exe \
-        | grep -A5 "The Directory Table" | grep "^  [123]" \
-	| cut -f2- -d/ | grep ^foo/ | sort
+	| grep -A5 "The Directory Table" | grep "^  [0123]" \
+	| cut -f2- -d/ | grep ^foo/ | sort -u
 ]],[0],[expout])
 
 AT_CLEANUP
-- 
2.39.1