Avoid undefined behaviour with signed expressions

	PR 17453
bfd/
	* libbfd.c (COERCE16, COERCE32, COERCE64): Use unsigned types.
	(EIGHT_GAZILLION): Delete.
binutils/
	* dwarf.c (read_leb128): Avoid signed overflow.
	(read_debug_line_header): Likewise.
gas/
	* config/tc-i386.c (fits_in_signed_long): Use unsigned param and
	expression to avoid signed overflow.
	(fits_in_signed_byte, fits_in_unsigned_byte, fits_in_unsigned_word,
	fits_in_signed_word, fits_in_unsigned_long): Similarly.
	* expr.c (operand <'-'>): Avoid signed overflow.
	* read.c (s_comm_internal): Likewise.

1 files changed, 1 insertions, 1 deletions

diff --git a/gas/read.c b/gas/read.c
index 2d5fdf1..9fd0335 100644
--- a/gas/read.c
+++ b/gas/read.c
@@ -1704,7 +1704,7 @@ s_comm_internal (int param,
 
   temp = get_absolute_expr (&exp);
   size = temp;
-  size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1;
+  size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1;
   if (exp.X_op == O_absent)
     {
       as_bad (_("missing size expression"));