Re: [PATCH] Prevent appending "-g" after "-g3" to compile options in info-macros.exp.

[Andreas Arnez <arnez@linux.vnet.ibm.com>]

On Tue, Jan 14 2014, Tom Tromey wrote:

>>>>>> "Andreas" == Andreas Arnez <arnez@linux.vnet.ibm.com> writes:
>
> Andreas> 2014-01-14  Andreas Arnez  <arnez@linux.vnet.ibm.com>
> Andreas> 	* gdb.base/info-macros.exp: Remove "debug" from the compile
> Andreas> 	options.
>
> Andreas> -set options "debug additional_flags=-g3"
> Andreas> +set options "additional_flags=-g3"
>
> Would you mind adding a comment explaining why "debug" doesn't appear
> here?  Ok with that.

Sure.  How about this?

-----

Subject: [PATCH] Prevent appending "-g" after "-g3" to compile options
 in info-macros.exp.

When upstream gcc is given a command line with "-g3" followed by "-g",
it doesn't generate a ".debug_macro" section.  This is because the last
option wins, thus downgrading the debug level again.  Without any macro
debug information in the executable, info-macros.exp obviously yields
many failures.

Since "-g" is appended by DejaGnu's target_compile whenever the "debug"
option is set, the fix just removes that option.

testsuite/
2014-01-15  Andreas Arnez  <arnez@linux.vnet.ibm.com>

	* gdb.base/info-macros.exp: Remove "debug" from the compile
	options.
---
 gdb/testsuite/gdb.base/info-macros.exp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gdb/testsuite/gdb.base/info-macros.exp b/gdb/testsuite/gdb.base/info-macros.exp
index ff889f4..798d9b5 100644
--- a/gdb/testsuite/gdb.base/info-macros.exp
+++ b/gdb/testsuite/gdb.base/info-macros.exp
@@ -27,7 +27,9 @@ if ![test_compiler_info gcc*] {
   return -1
 }
 
-set options "debug additional_flags=-g3"
+# Don't use "debug" here.  Otherwise "-g" would be appended to the gcc
+# command line, possibly overriding "-g3" (depending on gcc version).
+set options "additional_flags=-g3"
 
 if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} $options] } {
     untested ${testfile}.exp
-- 
1.8.3.1