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Subject:	DJGPP gcc 4.7.3 and 4.8.2 work inconsistently on type uint32_t.
From:	Andrew Wu <andrewwu DOT tw AT gmail DOT com>
Injection-Date:	Thu, 20 Feb 2014 09:27:41 +0000
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hello,

I found that for type uint32_t, DJGPP gcc 4.7.3 and DJGPP gcc 4.8.2 work inconsistently.

File x.c:

====
#include <stdint.h>
#include <stdio.h>
int main()
{
  uint32_t x = 100;
  printf("Hello %x \n", x);
  return 0;
}
====

Compile the file with "-Wall" to enable all warnings.

 gcc -Wall -c x.c

If I uses DJGPP gcc 4.7.3, there is no problem.

But if I use DJGPP gcc 4.8.2, there will be warning message:


x.c: In function 'main':
x.c:6:3: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'uint32_t' [-Wformat=]
   printf("Hello %x \n", x);
   ^

DJGPP gcc 4.7.3 binary files are from the official DJGPP Zip File Picker :

http://www.delorie.com/djgpp/zip-picker.html

I download and use:

bnu224b.zip
djdev203.zip
gcc473b.zip

Other files are not important, so I ignored them.

DJGPP gcc 4.8.2 binary files are downloaded from official FTP's beta directory :

ftp://ftp.delorie.com/pub/djgpp/beta/

I download and use:

bnu224b.zip
djdev204.zip
gcc482b.zip

It seems uint32_t type definition is changed between gcc 4.7.3 and 4.8.2?

- Raw text -