[binutils-gdb] [gdb/testsuite] Workaround unnecessary .s file with gfortran 4.8

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

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=cdcec216b49a95e6692ab8c5de5693508ba19759

commit cdcec216b49a95e6692ab8c5de5693508ba19759
Author: Tom de Vries <tdevries@suse.de>
Date:   Mon Jun 27 12:47:26 2022 +0200

    [gdb/testsuite] Workaround unnecessary .s file with gfortran 4.8
    
    After running test-case gdb.fortran/namelist.exp with gfortran 4.8.5, I'm left
    with:
    ...
    $ git sti
    On branch master
    Your branch is up to date with 'origin/master'.
    
    Untracked files:
      (use "git add <file>..." to include in what will be committed)
            gdb/testsuite/lib/compiler.s
    
    nothing added to commit but untracked files present (use "git add" to track)
    ...
    
    We're running into PR gcc/60447, which was fixed in gcc 4.9.0.
    
    Workaround this by first copying the source file to the temp dir, such that
    the .s file is left there instead:
    ...
    $ ls build/gdb/testsuite/temp/<runtest pid>/
    compiler.c  compiler.F90  compiler.s
    ...
    
    Tested on x86_64-linux.

Diff:
---
 gdb/testsuite/lib/gdb.exp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 141cb043fe2..a29b8f947c4 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -4137,6 +4137,12 @@ proc get_compiler_info {{language "c"}} {
 	set cppout [read $file]
 	close $file
     } else {
+	# Copy $ifile to temp dir, to work around PR gcc/60447.  This will leave the
+	# superfluous .s file in the temp dir instead of in the source dir.
+	set tofile [file tail $ifile]
+	set tofile [standard_temp_file $tofile]
+	file copy -force $ifile $tofile
+	set ifile $tofile
 	set cppout [ gdb_compile "${ifile}" "" preprocess [list "$language" quiet getting_compiler_info] ]
     }
     eval log_file $saved_log