Remove use of alloca.

[deliverable/binutils-gdb.git] / gas / atof-generic.c

diff --git a/gas/atof-generic.c b/gas/atof-generic.c
index 6a5c2f15b3ccb697737bd6c9ad32f97f64011fe7..b1deec0ad2012fb78867cdb36132e3e29cea88cc 100644 (file)
--- a/gas/atof-generic.c
+++ b/gas/atof-generic.c
@@ -1,26 +1,23 @@
 /* atof_generic.c - turn a string of digits into a Flonum
-   Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000,
-   2001, 2003, 2005 Free Software Foundation, Inc.
+   Copyright (C) 1987-2016 Free Software Foundation, Inc.
 
    This file is part of GAS, the GNU Assembler.
 
    GAS is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
+   the Free Software Foundation; either version 3, or (at your option)
    any later version.
 
-   GAS is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GAS is distributed in the hope that it will be useful, but WITHOUT
+   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+   License for more details.
 
    You should have received a copy of the GNU General Public License
    along with GAS; see the file COPYING.  If not, write to the Free
    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
    02110-1301, USA.  */
 
-#include <string.h>
-
 #include "as.h"
 #include "safe-ctype.h"
 
@@ -103,7 +100,7 @@ atof_generic (/* return pointer to just AFTER number we read.  */
   int seen_significant_digit;
 
 #ifdef ASSUME_DECIMAL_MARK_IS_DOT
-  assert (string_of_decimal_marks[0] == '.'
+  gas_assert (string_of_decimal_marks[0] == '.'
          && string_of_decimal_marks[1] == 0);
 #define IS_DECIMAL_MARK(c)     ((c) == '.')
 #else
@@ -308,6 +305,8 @@ atof_generic (/* return pointer to just AFTER number we read.  */
     {
       int count;               /* Number of useful digits left to scan.  */
 
+      LITTLENUM_TYPE *temporary_binary_low = NULL;
+      LITTLENUM_TYPE *power_binary_low = NULL;
       LITTLENUM_TYPE *digits_binary_low;
       unsigned int precision;
       unsigned int maximum_useful_digits;
@@ -365,7 +364,7 @@ atof_generic (/* return pointer to just AFTER number we read.  */
        * sizeof (LITTLENUM_TYPE);
 
       digits_binary_low = (LITTLENUM_TYPE *)
-       alloca (size_of_digits_in_chars);
+       xmalloc (size_of_digits_in_chars);
 
       memset ((char *) digits_binary_low, '\0', size_of_digits_in_chars);
 
@@ -458,13 +457,11 @@ atof_generic (/* return pointer to just AFTER number we read.  */
         * giving return_binary_mantissa and return_binary_exponent.
         */
 
-       LITTLENUM_TYPE *power_binary_low;
        int decimal_exponent_is_negative;
        /* This refers to the "-56" in "12.34E-56".  */
        /* FALSE: decimal_exponent is positive (or 0) */
        /* TRUE:  decimal_exponent is negative */
        FLONUM_TYPE temporary_flonum;
-       LITTLENUM_TYPE *temporary_binary_low;
        unsigned int size_of_power_in_littlenums;
        unsigned int size_of_power_in_chars;
 
@@ -482,8 +479,9 @@ atof_generic (/* return pointer to just AFTER number we read.  */
        size_of_power_in_chars = size_of_power_in_littlenums
          * sizeof (LITTLENUM_TYPE) + 2;
 
-       power_binary_low = (LITTLENUM_TYPE *) alloca (size_of_power_in_chars);
-       temporary_binary_low = (LITTLENUM_TYPE *) alloca (size_of_power_in_chars);
+       power_binary_low = (LITTLENUM_TYPE *) xmalloc (size_of_power_in_chars);
+       temporary_binary_low = (LITTLENUM_TYPE *) xmalloc (size_of_power_in_chars);
+
        memset ((char *) power_binary_low, '\0', size_of_power_in_chars);
        *power_binary_low = 1;
        power_of_10_flonum.exponent = 0;
@@ -574,7 +572,6 @@ atof_generic (/* return pointer to just AFTER number we read.  */
          (void) putchar ('\n');
 #endif
        }
-
       }
 
       /*
@@ -588,6 +585,11 @@ atof_generic (/* return pointer to just AFTER number we read.  */
       /* Assert sign of the number we made is '+'.  */
       address_of_generic_floating_point_number->sign = digits_sign_char;
 
+      if (temporary_binary_low)
+       free (temporary_binary_low);
+      if (power_binary_low)
+       free (power_binary_low);
+      free (digits_binary_low);
     }
   return return_value;
 }