From: Andreas Arnez <arnez@linux.vnet.ibm.com>
Date: Fri, 10 Jan 2014 15:37:36 +0000 (+0000)
Subject: Since upstream gcc has recently increased the function alignment on
X-Git-Tag: gdb-7.8-release~1651
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=52d7fb1303dcc15fab68b89cf1dd8d2d719c7bb6;p=platform%2Fupstream%2Fbinutils.git

Since upstream gcc has recently increased the function alignment on
S390, the dw2-dir-file-name test case fails in the first
gdb_continue_to_breakpoint.  Indeed, the breakpoint is now placed into
the alignment gap *before* the actual function.

This happens because the test case declares the respective "*_start"
symbol as a "loose" label before the function definition, and the
compiler inserts the alignment between that label and the function
itself.

The "*_start" symbols were only necessary because FUNC made the
function static.  The fix makes the functions extern instead, thus
making the "*_start" labels unnecessary.

testsuite/
2014-01-10  Andreas Arnez  <arnez@linux.vnet.ibm.com>
	    Pedro Alves <palves@redhat.com>

	* gdb.dwarf2/dw2-dir-file-name.c (FUNC): Remove "*_start" symbol.
	Make "name" extern.
	* gdb.dwarf2/dw2-dir-file-name.exp (out_cu, out_line): Replace
	references to ${name}_start by references to ${name}.
---

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 2bfeec1..904cca7 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2014-01-10  Andreas Arnez  <arnez@linux.vnet.ibm.com>
+	    Pedro Alves <palves@redhat.com>
+
+	* gdb.dwarf2/dw2-dir-file-name.c (FUNC): Remove "*_start" symbol.
+	Make "name" extern.
+	* gdb.dwarf2/dw2-dir-file-name.exp (out_cu, out_line): Replace
+	references to ${name}_start by references to ${name}.
+
 2014-01-10  Joel Brobecker  <brobecker@adacore.com>
 
 	* gdb.ada/pp-rec-component.exp: Remove path from "source" test.
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-dir-file-name.c b/gdb/testsuite/gdb.dwarf2/dw2-dir-file-name.c
index 21a4d2a..2b9cc6a 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-dir-file-name.c
+++ b/gdb/testsuite/gdb.dwarf2/dw2-dir-file-name.c
@@ -64,8 +64,7 @@ FUNC (compdir_absolute_ldir_absolute_file_absolute_same)	\
 FUNC (compdir_absolute_ldir_absolute_file_absolute_different)
 
 #define FUNC(name)					\
-  asm (#name "_start: .globl " #name "_start\n");	\
-  static void						\
+  void							\
   name (void)						\
   {							\
     v++;						\
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-dir-file-name.exp b/gdb/testsuite/gdb.dwarf2/dw2-dir-file-name.exp
index 7f29581..e523e89 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-dir-file-name.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-dir-file-name.exp
@@ -54,7 +54,7 @@ proc out_cu { name cu_dir cu_name line_dir line_name } {
 	.ascii	\"GNU C\\0\"			/* DW_AT_producer */
 	.byte	2				/* DW_AT_language (DW_LANG_C) */
 	.4byte	.Lline_${name}_begin		/* DW_AT_stmt_list */
-	.4byte	${name}_start			/* DW_AT_low_pc */
+	.4byte	${name}			/* DW_AT_low_pc */
 	.4byte	${name}_end			/* DW_AT_high_pc */
 "
     if { $cu_dir != "" } {
@@ -65,7 +65,7 @@ proc out_cu { name cu_dir cu_name line_dir line_name } {
 
 	.uleb128	3			/* Abbrev: DW_TAG_subprogram */
 	.asciz		\"${name}\"		/* DW_AT_name */
-	.4byte		${name}_start		/* DW_AT_low_pc */
+	.4byte		${name}		/* DW_AT_low_pc */
 	.4byte		${name}_end		/* DW_AT_high_pc */
 
 	.byte		0			/* End of children of CU */
@@ -122,7 +122,7 @@ proc out_line { name cu_dir cu_name line_dir line_name } {
 	.byte		0	/* DW_LNE_set_address */
 	.uleb128	5
 	.byte		2
-	.4byte		${name}_start
+	.4byte		${name}
 	.byte		1	/* DW_LNS_copy */
 	.byte		3	/* DW_LNS_advance_line */
 	.sleb128	1	/* ... to 1000 */