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+++ This bug was initially created as a clone of Bug #859427 +++ Description of problem: I have some code something like this: uint64_t be; printf(PRIu64, be64toh(be)); This compiles on F17, but not on F18 and rawhide. The error is: ldm.c:1079:5: error: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'long long unsigned int' [-Werror=format] In F17, __bswap_64 is defined as: # if __WORDSIZE == 64 # define __bswap_64(x) \ (__extension__ \ ({ register unsigned long __v, __x = (x); \ <snip> # else # define __bswap_64(x) \ (__extension__ \ ({ union { __extension__ unsigned long long int __ll; \ <snip> However, on F18 and rawhide it becomes: # if __GNUC_PREREQ (4, 2) static __inline unsigned long long int __bswap_64 (unsigned long long int __bsx) { return __builtin_bswap64 (__bsx); } # elif __WORDSIZE == 64 <as above> This means that on in F18 and rawhide, it returns unsigned long long int regardless of word length, which isn't the case on F17, causing my code to not compile. Version-Release number of selected component (if applicable): glibc-headers-2.16.90-11.fc19.x86_64.rpm
Unfortunately, you're going to need to fix your code as I don't see this changing. By going to a uniform "unsigned long long" return value it makes it easier to generally avoid warnings in packages which are compiled for multiple architectures with varying wordsizes.
Reopening for backport.
I've pushed a build now, so the next bodhi push should have this fix.
glibc-2.16-28.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/glibc-2.16-28.fc18
glibc-2.16-28.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
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