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[patch, rfc] Fix Wformat-nonlit prob with dsrec.c


Hello,

This fixes a format-nonliteral warning in dsrec.c. It also eliminates the sprintf replacing it with snprintf.

I should note that I don't have access to a m/c that uses srecords so `it looks ok ...'. I'm looking to commit this in a few days.

Andrew
2003-08-10  Andrew Cagney  <cagney@redhat.com>

	* Makefile.in (dsrec.o): Update dependencies.
	* dsrec.c: Include "gdb_assert.h".
	(make_srec): Use snprintf instead of sprintf, use a literal format
	string.

Index: Makefile.in
===================================================================
RCS file: /cvs/src/src/gdb/Makefile.in,v
retrieving revision 1.424
diff -u -r1.424 Makefile.in
--- Makefile.in	8 Aug 2003 17:30:35 -0000	1.424
+++ Makefile.in	10 Aug 2003 18:20:29 -0000
@@ -1678,7 +1678,7 @@
 doublest.o: doublest.c $(defs_h) $(doublest_h) $(floatformat_h) \
 	$(gdb_assert_h) $(gdb_string_h) $(gdbtypes_h)
 dpx2-nat.o: dpx2-nat.c $(defs_h) $(gdbcore_h) $(gdb_string_h)
-dsrec.o: dsrec.c $(defs_h) $(serial_h) $(srec_h)
+dsrec.o: dsrec.c $(defs_h) $(serial_h) $(srec_h) $(gdb_assert_h)
 dummy-frame.o: dummy-frame.c $(defs_h) $(dummy_frame_h) $(regcache_h) \
 	$(frame_h) $(inferior_h) $(gdb_assert_h) $(frame_unwind_h) \
 	$(command_h) $(gdbcmd_h)
Index: dsrec.c
===================================================================
RCS file: /cvs/src/src/gdb/dsrec.c,v
retrieving revision 1.11
diff -u -r1.11 dsrec.c
--- dsrec.c	15 Jul 2001 20:34:13 -0000	1.11
+++ dsrec.c	10 Aug 2003 18:20:29 -0000
@@ -23,6 +23,7 @@
 #include "serial.h"
 #include "srec.h"
 #include <time.h>
+#include "gdb_assert.h"
 
 extern void report_transfer_performance (unsigned long, time_t, time_t);
 
@@ -223,10 +224,6 @@
   const static char data_code_table[] = "123";
   const static char term_code_table[] = "987";
   const static char header_code_table[] = "000";
-  const static char *formats[] =
-  {"S%c%02X%04X",
-   "S%c%02X%06X",
-   "S%c%02X%08X"};
   char const *code_table;
   int addr_size;
   int payload_size;
@@ -271,9 +268,10 @@
     payload_size = 0;		/* Term or header packets have no payload */
 
   /* Output the header.  */
-
-  sprintf (srec, formats[addr_size - 2], code_table[addr_size - 2],
-	   addr_size + payload_size + 1, (int) targ_addr);
+  snprintf (srec, (*maxrecsize) + 1, "S%c%02X%0*X",
+	    code_table[addr_size - 2],
+	    addr_size + payload_size + 1,
+	    addr_size * 2, (int) targ_addr);
 
   /* Note that the checksum is calculated on the raw data, not the
      hexified data.  It includes the length, address and the data
@@ -287,6 +285,9 @@
 	       + ((targ_addr >> 16) & 0xff)
 	       + ((targ_addr >> 24) & 0xff));
 
+  /* NOTE: cagney/2003-08-10: The equation is old.  Check that the
+     recent snprintf changes match that equation.  */
+  gdb_assert (strlen (srec) == 1 + 1 + 2 + addr_size * 2);
   p = srec + 1 + 1 + 2 + addr_size * 2;
 
   /* Build the Srecord.  */

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