[U-Boot-Users] [PATCH] Fix printf errors.

[U-Boot-Users] [PATCH] Fix printf errors.

[Andrew Klossner]

The compiler will help find mismatches between printf formats and
arguments if you let it.  This patch adds the necessary attributes to
declarations in include/common.h, then corrects the resulting compiler
warnings in several files.  Some of these were bugs, e.g., "$d"
instead of "%d" and incorrect arguments in common/cmd_fdt.c.  Others
were just annoying, like int-long mismatches on a system where both
are 32 bits.  It's worth fixing the annoying errors to catch the real
ones.

I can only compile for ppc architecture so have not tested much of the
source code for further warnings.

common/cmd_fdt.c
common/common/main.c
cpu/mpc85xx/traps.c
include/common.h
lib_ppc/bootm.c
net/tftp.c
---
 common/cmd_fdt.c    |    8 ++++----
 common/main.c       |    2 +-
 cpu/mpc85xx/traps.c |    8 ++++----
 include/common.h    |   15 ++++++++++-----
 lib_ppc/bootm.c     |    8 ++++----
 net/tftp.c          |    2 +-
 6 files changed, 24 insertions(+), 19 deletions(-)

diff --git a/common/cmd_fdt.c b/common/cmd_fdt.c
index 97b9dd7..d3b19dd 100644
--- a/common/cmd_fdt.c
+++ b/common/cmd_fdt.c
@@ -451,14 +451,14 @@ static int fdt_valid(void)
 		if (err == -FDT_ERR_BADVERSION) {
 			if (fdt_version(working_fdt) <
 			    FDT_FIRST_SUPPORTED_VERSION) {
-				printf (" - too old, fdt $d < %d",
+				printf (" - too old, fdt %d < %d",
 					fdt_version(working_fdt),
 					FDT_FIRST_SUPPORTED_VERSION);
 				working_fdt = NULL;
 			}
 			if (fdt_last_comp_version(working_fdt) >
 			    FDT_LAST_SUPPORTED_VERSION) {
-				printf (" - too new, fdt $d > %d",
+				printf (" - too new, fdt %d > %d",
 					fdt_version(working_fdt),
 					FDT_LAST_SUPPORTED_VERSION);
 				working_fdt = NULL;
@@ -546,7 +546,7 @@ static int fdt_parse_prop(char **newval, int count, char *data, int *len)
 				newp = newval[++stridx];
 		}
 		if (*newp != ']') {
-			printf("Unexpected character '%c'\n", *newval);
+			printf("Unexpected character '%c'\n", *newp);
 			return 1;
 		}
 	} else {
@@ -763,7 +763,7 @@ static int fdt_print(const char *pathp, char *prop, int depth)
 			}
 			break;
 		case FDT_NOP:
-			printf("/* NOP */\n", &tabs[MAX_LEVEL - level]);
+			printf("%s/* NOP */\n", &tabs[MAX_LEVEL - level]);
 			break;
 		case FDT_END:
 			return 1;
diff --git a/common/main.c b/common/main.c
index 046da6f..79ad291 100644
--- a/common/main.c
+++ b/common/main.c
@@ -509,7 +509,7 @@ void reset_cmd_timeout(void)
  */
 
 #define putnstr(str,n)	do {			\
-		printf ("%.*s", n, str);	\
+		printf ("%.*s", (int)n, str);	\
 	} while (0)
 
 #define CTL_CH(c)		((c) - 'a' + 1)
diff --git a/cpu/mpc85xx/traps.c b/cpu/mpc85xx/traps.c
index fd36658..0eab694 100644
--- a/cpu/mpc85xx/traps.c
+++ b/cpu/mpc85xx/traps.c
@@ -216,10 +216,10 @@ MachineCheckException(struct pt_regs *regs)
 
 	if (machinecheck_count > 1) {
 		regs->nip += 4; /* skip offending instruction */
-		printf("Skipping current instr, Returning to 0x%08x\n",
+		printf("Skipping current instr, Returning to 0x%08lx\n",
 		       regs->nip);
 	} else {
-		printf("Returning back to 0x%08x\n",regs->nip);
+		printf("Returning back to 0x%08lx\n",regs->nip);
 	}
 }
 
@@ -302,7 +302,7 @@ ExtIntException(struct pt_regs *regs)
 	printf("External Interrupt Exception at PC: %lx, SR: %lx, vector=%lx",
 	       regs->nip, regs->msr, regs->trap);
 	vect = pic->iack0;
-	printf(" irq IACK0@%05x=%d\n",&pic->iack0,vect);
+	printf(" irq IACK0@%05x=%d\n",(int)&pic->iack0,vect);
 	show_regs(regs);
 	print_backtrace((unsigned long *)regs->gpr[1]);
 	machinecheck_count++;
@@ -310,7 +310,7 @@ ExtIntException(struct pt_regs *regs)
 	printf("Returning back to 0x%08x\n",regs->nip);
 #else
 	regs->nip += 4; /* skip offending instruction */
-	printf("Skipping current instr, Returning to 0x%08x\n",regs->nip);
+	printf("Skipping current instr, Returning to 0x%08lx\n",regs->nip);
 #endif
 
 }
diff --git a/include/common.h b/include/common.h
index fd5adb3..51c2be8 100644
--- a/include/common.h
+++ b/include/common.h
@@ -607,8 +607,10 @@ ulong	simple_strtoul(const char *cp,char **endp,unsigned int base);
 unsigned long long	simple_strtoull(const char *cp,char **endp,unsigned int base);
 #endif
 long	simple_strtol(const char *cp,char **endp,unsigned int base);
-void	panic(const char *fmt, ...);
-int	sprintf(char * buf, const char *fmt, ...);
+void	panic(const char *fmt, ...)
+		__attribute__ ((format (__printf__, 1, 2)));
+int	sprintf(char * buf, const char *fmt, ...)
+		__attribute__ ((format (__printf__, 2, 3)));
 int	vsprintf(char *buf, const char *fmt, va_list args);
 
 /* lib_generic/crc32.c */
@@ -630,7 +632,8 @@ int	disable_ctrlc (int);	/* 1 to disable, 0 to enable Control-C detect */
  */
 
 /* serial stuff */
-void	serial_printf (const char *fmt, ...);
+void	serial_printf (const char *fmt, ...)
+		__attribute__ ((format (__printf__, 1, 2)));
 
 /* stdin */
 int	getc(void);
@@ -639,7 +642,8 @@ int	tstc(void);
 /* stdout */
 void	putc(const char c);
 void	puts(const char *s);
-void	printf(const char *fmt, ...);
+void	printf(const char *fmt, ...)
+		__attribute__ ((format (__printf__, 1, 2)));
 void	vprintf(const char *fmt, va_list args);
 
 /* stderr */
@@ -656,7 +660,8 @@ void	vprintf(const char *fmt, va_list args);
 #define stderr		2
 #define MAX_FILES	3
 
-void	fprintf(int file, const char *fmt, ...);
+void	fprintf(int file, const char *fmt, ...)
+		__attribute__ ((format (__printf__, 2, 3)));
 void	fputs(int file, const char *s);
 void	fputc(int file, const char c);
 int	ftstc(int file);
diff --git a/lib_ppc/bootm.c b/lib_ppc/bootm.c
index 10a0b12..f92f7a8 100644
--- a/lib_ppc/bootm.c
+++ b/lib_ppc/bootm.c
@@ -101,7 +101,7 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 
 	if (size < bootm_size) {
 		ulong base = bootmap_base + size;
-		printf("WARNING: adjusting available memory to %x\n", size);
+		printf("WARNING: adjusting available memory to %lx\n", size);
 		lmb_reserve(lmb, base, bootm_size - size);
 	}
 
@@ -630,7 +630,7 @@ static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 				 */
 				fdt_blob = (char *)fdt_addr;
 				debug ("*  fdt: raw FDT blob\n");
-				printf ("## Flattened Device Tree blob at %08lx\n", fdt_blob);
+				printf ("## Flattened Device Tree blob at %08lx\n", (long)fdt_blob);
 			}
 			break;
 		default:
@@ -638,7 +638,7 @@ static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 			goto error;
 		}
 
-		printf ("   Booting using the fdt blob at 0x%x\n", fdt_blob);
+		printf ("   Booting using the fdt blob@0x%x\n", (int)fdt_blob);
 
 	} else if (images->legacy_hdr_valid &&
 			image_check_type (&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
@@ -657,7 +657,7 @@ static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 		if (fdt_len) {
 
 			fdt_blob = (char *)fdt_data;
-			printf ("   Booting using the fdt at 0x%x\n", fdt_blob);
+			printf ("   Booting using the fdt at 0x%x\n", (int)fdt_blob);
 
 			if (fdt_check_header (fdt_blob) != 0) {
 				fdt_error ("image is not a fdt");
diff --git a/net/tftp.c b/net/tftp.c
index ea8fea2..84d83ca 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -178,7 +178,7 @@ TftpSend (void)
 		pkt += 5 /*strlen("octet")*/ + 1;
 		strcpy ((char *)pkt, "timeout");
 		pkt += 7 /*strlen("timeout")*/ + 1;
-		sprintf((char *)pkt, "%d", TIMEOUT);
+		sprintf((char *)pkt, "%lu", TIMEOUT);
 #ifdef ET_DEBUG
 		printf("send option \"timeout %s\"\n", (char *)pkt);
 #endif
-- 
1.5.5

[U-Boot-Users] [PATCH] Fix printf errors.

[Jerry Van Baren]

Andrew Klossner wrote:
> The compiler will help find mismatches between printf formats and
> arguments if you let it.  This patch adds the necessary attributes to
> declarations in include/common.h, then corrects the resulting compiler
> warnings in several files.  Some of these were bugs, e.g., "$d"
> instead of "%d" and incorrect arguments in common/cmd_fdt.c.  Others
> were just annoying, like int-long mismatches on a system where both
> are 32 bits.  It's worth fixing the annoying errors to catch the real
> ones.
> 
> I can only compile for ppc architecture so have not tested much of the
> source code for further warnings.
> 
> common/cmd_fdt.c

cmd_fdt.c portion...
Acked-by: Gerald Van Baren <vanbaren@cideas.com>

I'm embarrassed by the number of bugs I wrote into that function and 
apologize for being so sloppy.  My thanks to Andrew and others for 
finding and fixing my screwups.  :-(

Best regards,
gvb

[U-Boot-Users] [PATCH] Fix printf errors.

[Wolfgang Denk]

In message <200807021417.m62EHeff016508@pogo.cesa.opbu.xerox.com> you wrote:
> The compiler will help find mismatches between printf formats and
> arguments if you let it.  This patch adds the necessary attributes to
> declarations in include/common.h, then corrects the resulting compiler
> warnings in several files.  Some of these were bugs, e.g., "$d"
> instead of "%d" and incorrect arguments in common/cmd_fdt.c.  Others
> were just annoying, like int-long mismatches on a system where both
> are 32 bits.  It's worth fixing the annoying errors to catch the real
> ones.
> 
> I can only compile for ppc architecture so have not tested much of the
> source code for further warnings.

Very good. Thanks a lot - but could you please add your signed-off-by
line, and clean up the commit message (move commnets for the posting
that are not intended for the commit message _below_ the "---" line).

Best regards,

Wolfgang Denk

-- 
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