diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c
index 807dfcf..b0bfd9c 100755
--- a/gcc/c-typeck.c
+++ b/gcc/c-typeck.c
@@ -3133,7 +3133,7 @@ build_unary_op (code, xarg, noconvert)
       return fold (build1 (code, argtype, arg));
     }
 
-  error (errstring);
+  error ("%s", errstring);
   return error_mark_node;
 }
 
diff --git a/gcc/real.c b/gcc/real.c
index 456edda..7943b63 100755
--- a/gcc/real.c
+++ b/gcc/real.c
@@ -4042,8 +4042,6 @@ mtherr (name, code)
      char *name;
      int code;
 {
-  char errstr[80];
-
   /* The string passed by the calling program is supposed to be the
      name of the function in which the error occurred.
      The code argument selects which error message string will be printed.  */
@@ -4066,9 +4064,8 @@ mtherr (name, code)
     name = "modulus";
   else if (strcmp (name, "esqrt") == 0)
     name = "square root";
-  sprintf (errstr, "%s during real %s", ermsg[code], name);
   if (extra_warnings)
-    warning (errstr);
+    warning ("%s during real %s", ermsg[code], name);
   /* Set global error message word */
   merror = code + 1;
 }
diff --git a/gcc/toplev.c b/gcc/toplev.c
index f707c28..ac8e21b 100755
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -1061,7 +1061,7 @@ fatal_io_error(char *name)
 void
 fatal_insn(char *message, rtx insn)
 {
-    error(message);
+    error("%s", message);
     debug_rtx(insn);
     if (asm_out_file)
         fflush(asm_out_file);
diff --git a/gcc_arm/c-common.c b/gcc_arm/c-common.c
index 936b609..861b194 100755
--- a/gcc_arm/c-common.c
+++ b/gcc_arm/c-common.c
@@ -1587,7 +1587,7 @@ check_format_info (info, params)
 	      ++format_chars;
 	      if (params == 0)
 		{
-		  warning (tfaff);
+		  warning ("%s", tfaff);
 		  return;
 		}
 	      if (info->first_arg_num != 0)
@@ -1630,7 +1630,7 @@ check_format_info (info, params)
 		      ++format_chars;
 		      if (params == 0)
 		        {
-			  warning (tfaff);
+			  warning ("%s", tfaff);
 			  return;
 			}
 		      cur_param = TREE_VALUE (params);
@@ -1825,7 +1825,7 @@ check_format_info (info, params)
 	continue;
       if (params == 0)
 	{
-	  warning (tfaff);
+	  warning ("%s", tfaff);
 	  return;
 	}
       cur_param = TREE_VALUE (params);
diff --git a/gcc_arm/c-typeck.c b/gcc_arm/c-typeck.c
index ab3ede7..583793a 100755
--- a/gcc_arm/c-typeck.c
+++ b/gcc_arm/c-typeck.c
@@ -3147,7 +3147,7 @@ build_unary_op (code, xarg, noconvert)
       return fold (build1 (code, argtype, arg));
     }
 
-  error (errstring);
+  error ("%s", errstring);
   return error_mark_node;
 }
 
diff --git a/gcc_arm/cccp.c b/gcc_arm/cccp.c
index 76ae613..d95a67c 100755
--- a/gcc_arm/cccp.c
+++ b/gcc_arm/cccp.c
@@ -8676,7 +8676,7 @@ macroexpand (hp, op)
       else
 	parse_error = macarg (NULL_PTR, 0);
       if (parse_error) {
-	error_with_line (line_for_error (start_line), parse_error);
+	error_with_line (line_for_error (start_line), "%s", parse_error);
 	break;
       }
       i++;
diff --git a/gcc_arm/real.c b/gcc_arm/real.c
index 7c67f4e..1a187ef 100755
--- a/gcc_arm/real.c
+++ b/gcc_arm/real.c
@@ -5703,8 +5703,6 @@ mtherr (name, code)
      char *name;
      int code;
 {
-  char errstr[80];
-
   /* The string passed by the calling program is supposed to be the
      name of the function in which the error occurred.
      The code argument selects which error message string will be printed.  */
@@ -5727,9 +5725,8 @@ mtherr (name, code)
     name = "modulus";
   else if (strcmp (name, "esqrt") == 0)
     name = "square root";
-  sprintf (errstr, "%s during real %s", ermsg[code], name);
   if (extra_warnings)
-    warning (errstr);
+    warning ("%s during real %s", ermsg[code], name);
   /* Set global error message word */
   merror = code + 1;
 }
diff --git a/gcc_arm/toplev.c b/gcc_arm/toplev.c
index 29833da..c16480e 100755
--- a/gcc_arm/toplev.c
+++ b/gcc_arm/toplev.c
@@ -1393,7 +1393,7 @@ fatal_insn (message, insn)
      char *message;
      rtx insn;
 {
-  error (message);
+  error ("%s", message);
   debug_rtx (insn);
   if (asm_out_file)
     fflush (asm_out_file);
diff --git a/libc/Makefile b/libc/Makefile
index d9de489..25e47c0 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -15,7 +15,7 @@ export AR := $(PREFIX)ar
 export AS := $(PREFIX)as
 endif
 
-SHELL := /bin/bash -o pipefail
+SHELL := bash -o pipefail
 
 ASFLAGS := -mcpu=arm7tdmi