[committed][gdb/testsuite] Skip gdb.fortran/namelist.exp for gfortran 4.8

[Tom de Vries <tdevries@suse.de>]

On 6/10/22 09:10, Tom de Vries wrote:
> Hi,
> 
> The test-case gdb.fortran/namelist.exp uses a gfortran feature (emitting
> DW_TAG_namelist in the debug info) that has been supported since gfortran 4.9,
> see PR gcc/37132.
> 
> Skip the test for gfortran 4.8 and earlier.  Do this using gcc_major_version,
> and update it to be able to handle "gcc_major_version {gfortran-*} f90".
> 
> Tested on x86_64-linux, with gfortran 4.8.5, 7.5.0, and 12.1.1.
> 
> Any comments?

Committed.

Thanks,
- Tom

> [gdb/testsuite] Skip gdb.fortran/namelist.exp for gfortran 4.8
> 
> ---
>   gdb/testsuite/gdb.fortran/namelist.exp |  6 +++++-
>   gdb/testsuite/lib/gdb.exp              | 10 +++++++---
>   2 files changed, 12 insertions(+), 4 deletions(-)
> 
> diff --git a/gdb/testsuite/gdb.fortran/namelist.exp b/gdb/testsuite/gdb.fortran/namelist.exp
> index 3917f1b9adb..39cf0e17654 100644
> --- a/gdb/testsuite/gdb.fortran/namelist.exp
> +++ b/gdb/testsuite/gdb.fortran/namelist.exp
> @@ -37,7 +37,11 @@ set int [fortran_int4]
>   gdb_breakpoint [gdb_get_line_number "Display namelist"]
>   gdb_continue_to_breakpoint "Display namelist"
>   
> -if { [test_compiler_info {gfortran-*} f90] } {
> +# DW_TAG_namelist is supported starting gcc 4.9.
> +set supported [expr \
> +		   [test_compiler_info {gfortran-*} f90] \
> +		   && [gcc_major_version {gfortran-*} f90] >= 4.9]
> +if { $supported } {
>       gdb_test "ptype nml" \
>           "type = Type nml\r\n *$int :: a\r\n *$int :: b\r\n *End Type nml"
>       gdb_test "print nml" \
> diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
> index e8214e65a8b..41e1d549510 100644
> --- a/gdb/testsuite/lib/gdb.exp
> +++ b/gdb/testsuite/lib/gdb.exp
> @@ -4228,13 +4228,17 @@ proc test_compiler_info { {compiler ""} {language "c"} } {
>   # Return the gcc major version, or -1.
>   # For gcc 4.8.5, the major version is 4.8.
>   # For gcc 7.5.0, the major version 7.
> +# The COMPILER and LANGUAGE arguments are as for test_compiler_info.
>   
> -proc gcc_major_version { } {
> +proc gcc_major_version { {compiler "gcc-*"} {language "c"} } {
>       global decimal
> -    if { ![test_compiler_info "gcc-*"] } {
> +    if { ![test_compiler_info $compiler $language] } {
>   	return -1
>       }
> -    set res [regexp gcc-($decimal)-($decimal)- [test_compiler_info] \
> +    # Strip "gcc-*" to "gcc".
> +    regsub -- {-.*} $compiler "" compiler
> +    set res [regexp $compiler-($decimal)-($decimal)- \
> +		 [test_compiler_info "" $language] \
>   		 dummy_var major minor]
>       if { $res != 1 } {
>   	return -1