[Bug stdio/17829] Incorrect handling of precision specifier in printf family

[cherepan at mccme dot ru]

https://sourceware.org/bugzilla/show_bug.cgi?id=17829

Alexander Cherepanov <cherepan at mccme dot ru> changed:

           What    |Removed                     |Added
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                 CC|                            |cherepan at mccme dot ru

--- Comment #5 from Alexander Cherepanov <cherepan at mccme dot ru> ---
To add to two already mentioned problems (unnecessary malloc and fail for
INT_MAX):

C11 seems not to specify any limit for a precision and values larger than
INT_MAX could be useful. The variable for precision is declared as int[1] and
extracted from a format string as int with overflow control[2]. A larger type
like size_t and something like saturated processing of the number is a better
fit.

[1]
https://sourceware.org/git/?p=glibc.git;a=blob;f=stdio-common/vfprintf.c;h=ae0145295479d0da11ae6bd496bd7039546419de;hb=HEAD#l1359
[2]
https://sourceware.org/git/?p=glibc.git;a=blob;f=stdio-common/printf-parse.h;h=e9903549997b113c5a38be3c2a463c2d83954c51;hb=HEAD#l68

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