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tools/kwbimage.c: fix build on m68k

PATCH New Angelo Dureghello 2 participants 3 messages Dec 3, 2014

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#0 lore raw

PATCH 1/1 tools/kwbimage.c: fix build on m68k

Compiler still complains about headersz possible uninitialized, even after last change (switch used).

CROSS_COMPILE=/opt/toolchains/m68k/gcc-4.6.3-nolibc/m68k-linux/ bin/m68k-linux- ./MAKEALL -a m68k
boards.cfg is up to date. Nothing to do.
Building M52277EVB board...
text data bss dec hex filename
118493 11756 4096 134345 20cc9 ./u-boot
tools/kwbimage.c: In function ?kwbimage_set_header?:
tools/kwbimage.c:803:8: warning: ?headersz? may be used uninitialized in this function [-Wmaybe-uninitialized]

  memcpy(ptr, image, headersz);
                     ^
---
 tools/kwbimage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
tools/kwbimage.c +1 -1
index c50f2e2..2c302e5 100644
@@ -728,7 +728,7 @@ static void kwbimage_set_header(void *ptr, struct stat *sbuf, int ifd,
 	FILE *fcfg;
 	void *image = NULL;
 	int version;
-	size_t headersz;
+	size_t headersz = 0;
 	uint32_t checksum;
 	int ret;
 	int size;
Signature · 1 line
2.1.1
#1 lore raw

PATCH 1/1 tools/kwbimage.c: fix build on m68k

Hi Angelo,

Quoted 25 lines

Compiler still complains about headersz possible uninitialized, even after last change (switch used).

CROSS_COMPILE=/opt/toolchains/m68k/gcc-4.6.3-nolibc/m68k-linux/ bin/m68k-linux- ./MAKEALL -a m68k
boards.cfg is up to date. Nothing to do.
Building M52277EVB board...
text data bss dec hex filename
118493 11756 4096 134345 20cc9 ./u-boot
tools/kwbimage.c: In function ?kwbimage_set_header?:
tools/kwbimage.c:803:8: warning: ?headersz? may be used uninitialized in this function [-Wmaybe-uninitialized]

  memcpy(ptr, image, headersz);
                     ^
---
 tools/kwbimage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
tools/kwbimage.c +0 -0
index c50f2e2..2c302e5 100644

tools/kwbimage.c static void kwbimage_set_header(void *ptr, struct · line 734

Quoted 8 lines
tools/kwbimage.c +1 -1
@@ -728,7 +728,7 @@ static void kwbimage_set_header(void *ptr, struct
 stat *sbuf, int ifd, FILE *fcfg;
 	void *image = NULL;
 	int version;
-	size_t headersz;
+	size_t headersz = 0;
 	uint32_t checksum;
 	int ret;
 	int size;

You aren't the first person who attempted to fix this.

Please read the following thread:
http://patchwork.ozlabs.org/patch/412968/

Albert has already promised to look into this issue.

Best regards,
Lukasz Majewski
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#2 lore raw

PATCH 1/1 tools/kwbimage.c: fix build on m68k

Dear Lukasz,

Quoted 2 lines

Hi Angelo,
You aren't the first person who attempted to fix this.

i read the history of the fixes done on this file before posting, and seen the issue was solved using a "switch / case" approach.

I was testing yesterday the kernel.org x86 toolchain for m68k, (m68k/gcc-4.6.3-nolibc) and found this warning emitted building the master branch,so i posted the patch since is possible the warning is thrown only with this m68k toolchain.

So i don't want absolutely overlap ongoing jobs, if they are already in chargeto anyone simply ignore the patch.

Best Regards,
Angelo Dureghello