[PATCH 1/7] cast literal to char * when assigning to input_line_ptr

[tbsaunde+binutils@tbsaunde.org]

From: Trevor Saunders <tbsaunde+binutils@tbsaunde.org>

various places either directly or indirectly set input_line_pointer to point at
a literal.  Currently lots of places modify the string input_line_pointer
points at, so making it const isn't easy.  Since most if not all of these
places assign to input_line_pointer to parse an expression it would probably be
best to add ways to generate and deal with expressions that doesn't involve
parsing strings, but for now adding some casts seems easiest.

gas/ChangeLog:

2016-03-29  Trevor Saunders  <tbsaunde+binutils@tbsaunde.org>

	* config/tc-i960.c (parse_expr): Cast to char * when assigning to
	input_line_pointer.
	* config/tc-m32r.c (expand_debug_syms): Likewise.
	* config/tc-msp430.c (msp430_dstoperand): Likewise.
	* config/tc-z80.c (md_begin): Likewise.
	* stabs.c (stabs_generate_asm_func): Likewise.
---
 gas/config/tc-i960.c   | 10 +++++-----
 gas/config/tc-m32r.c   |  2 +-
 gas/config/tc-msp430.c |  2 +-
 gas/config/tc-z80.c    |  2 +-
 gas/stabs.c            |  2 +-
 5 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/gas/config/tc-i960.c b/gas/config/tc-i960.c
index 8a8f31c..45e8a44 100644
--- a/gas/config/tc-i960.c
+++ b/gas/config/tc-i960.c
@@ -450,7 +450,7 @@ static int br_cnt;
 /* Name of the table of pointers to branches.  A local (i.e.,
    non-external) symbol.  */
 
-static void ctrl_fmt (char *, long, int);
+static void ctrl_fmt (const char *, long, int);
 
 \f
 void
@@ -495,7 +495,7 @@ md_begin (void)
    string is not consumed in the evaluation -- tolerate no dangling junk!  */
 
 static void
-parse_expr (char *textP,		/* Text of expression to be parsed.  */
+parse_expr (const char *textP,		/* Text of expression to be parsed.  */
 	    expressionS *expP)		/* Where to put the results of parsing.  */
 {
   char *save_in;		/* Save global here.  */
@@ -513,7 +513,7 @@ parse_expr (char *textP,		/* Text of expression to be parsed.  */
   else
     {
       save_in = input_line_pointer;	/* Save global.  */
-      input_line_pointer = textP;	/* Make parser work for us.  */
+      input_line_pointer = (char *) textP;	/* Make parser work for us.  */
 
       (void) expression (expP);
       if ((size_t) (input_line_pointer - textP) != strlen (textP))
@@ -558,7 +558,7 @@ emit (long instr)		/* Word to be output, host byte order.  */
   		address displacement is greater than 13 bits.  */
 
 static void
-get_cdisp (char *dispP, /* Displacement as specified in source instruction.  */
+get_cdisp (const char *dispP, /* Displacement as specified in source instruction.  */
 	   const char *ifmtP, /* "COBR" or "CTRL" (for use in error message).  */
 	   long instr,  /* Instruction needing the displacement.  */
 	   int numbits, /* # bits of displacement (13 for COBR, 24 for CTRL).  */
@@ -1494,7 +1494,7 @@ brlab_next (void)
 }
 
 static void
-ctrl_fmt (char *targP,		/* Pointer to text of lone operand (if any).  */
+ctrl_fmt (const char *targP,		/* Pointer to text of lone operand (if any).  */
 	  long opcode,		/* Template of instruction.  */
 	  int num_ops)		/* Number of operands.  */
 {
diff --git a/gas/config/tc-m32r.c b/gas/config/tc-m32r.c
index 7621832..89205f8 100644
--- a/gas/config/tc-m32r.c
+++ b/gas/config/tc-m32r.c
@@ -613,7 +613,7 @@ expand_debug_syms (sym_linkS *syms, int align)
     {
       symbolS *symbolP = syms->symbol;
       next_syms = syms->next;
-      input_line_pointer = ".\n";
+      input_line_pointer = (char *) ".\n";
       pseudo_set (symbolP);
       free ((char *) syms);
     }
diff --git a/gas/config/tc-msp430.c b/gas/config/tc-msp430.c
index ae28984..98910aa 100644
--- a/gas/config/tc-msp430.c
+++ b/gas/config/tc-msp430.c
@@ -2156,7 +2156,7 @@ msp430_dstoperand (struct msp430_operand_s * op,
 
   if (op->am == 2)
     {
-      char *__tl = "0";
+      char *__tl = (char *) "0";
 
       op->mode = OP_EXP;
       op->am = 1;
diff --git a/gas/config/tc-z80.c b/gas/config/tc-z80.c
index 094b8e6..535ae22 100644
--- a/gas/config/tc-z80.c
+++ b/gas/config/tc-z80.c
@@ -249,7 +249,7 @@ md_begin (void)
         }
     }
   p = input_line_pointer;
-  input_line_pointer = "0";
+  input_line_pointer = (char *) "0";
   nul.X_md=0;
   expression (& nul);
   input_line_pointer = p;
diff --git a/gas/stabs.c b/gas/stabs.c
index 8d54f73..bc983c9 100644
--- a/gas/stabs.c
+++ b/gas/stabs.c
@@ -666,7 +666,7 @@ stabs_generate_asm_func (const char *funcname, const char *startlabname)
 
   if (! void_emitted_p)
     {
-      input_line_pointer = "\"void:t1=1\",128,0,0,0";
+      input_line_pointer = (char *) "\"void:t1=1\",128,0,0,0";
       s_stab ('s');
       void_emitted_p = 1;
     }
-- 
2.1.4