[binutils-gdb] Fix failed exec error message

[Pedro Alves <palves at sourceware dot org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=fe23c31f262151ce3265f5b90870d40cb6840f0a

commit fe23c31f262151ce3265f5b90870d40cb6840f0a
Author: Pedro Alves <palves@redhat.com>
Date:   Fri Jul 24 17:27:58 2015 +0100

    Fix failed exec error message
    
    Ref: https://sourceware.org/ml/gdb-patches/2015-07/msg00629.html
    
    This fixes the bogus command line in the error message shown when the
    SHELL environment variable points somewhere that's not something that
    resembles a shell:
    
      $ SHELL=/nonexisting gdb /home/pedro/a.out
      (gdb) r
      Starting program: /home/pedro/a.out
     - Cannot exec /home/pedro/a.out -c exec /home/pedro/a.out .
     + Cannot exec /nonexisting -c exec /home/pedro/a.out .
      Error: No such file or directory
      During startup program exited with code 127.
      (gdb)
    
    gdb/ChangeLog:
    2015-07-24  Pedro Alves  <palves@redhat.com>
    
    	* fork-child.c (fork_inferior): Print argv[0] instead of exec_file.

Diff:
---
 gdb/ChangeLog    | 4 ++++
 gdb/fork-child.c | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f6898fc..a3fa56f 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,9 @@
 2015-07-24  Pedro Alves  <palves@redhat.com>
 
+	* fork-child.c (fork_inferior): Print argv[0] instead of exec_file.
+
+2015-07-24  Pedro Alves  <palves@redhat.com>
+
 	* aarch64-linux-nat.c: Include nat/gdb_ptrace.h instead of
 	sys/ptrace.h.
 	* alpha-linux-nat.c: Likewise.
diff --git a/gdb/fork-child.c b/gdb/fork-child.c
index 66c07fb..4ba62b0 100644
--- a/gdb/fork-child.c
+++ b/gdb/fork-child.c
@@ -365,7 +365,7 @@ fork_inferior (char *exec_file_arg, char *allargs, char **env,
 
       /* If we get here, it's an error.  */
       save_errno = errno;
-      fprintf_unfiltered (gdb_stderr, "Cannot exec %s", exec_file);
+      fprintf_unfiltered (gdb_stderr, "Cannot exec %s", argv[0]);
       for (i = 1; argv[i] != NULL; i++)
 	fprintf_unfiltered (gdb_stderr, " %s", argv[i]);
       fprintf_unfiltered (gdb_stderr, ".\n");