GNU bug report logs - #74427
tests/printf/printf-indexed failure on macOS

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Pádraig Brady <P <at> draigBrady.com>
Cc: 74427 <at> debbugs.gnu.org, grishalevit <at> gmail.com
Subject: bug#74427: tests/printf/printf-indexed failure on macOS
Date: Tue, 19 Nov 2024 13:48:03 -0800

On 2024-11-19 12:28, Pádraig Brady wrote:
> But one could consider an empty argument as completely converted?

No, because POSIX says the argument must be a C integer constant, and 
empty strings are not C integer constants. Similar reasoning applies for 
floating point specs like %g, where POSIX says the argument is converted 
as if by strtod, and for an empty string POSIX says no conversion is 
performed by strtod.


> For example scripts with `printf '%d\n' "$int"` will start erroring if int is not defined

It shouldn't be that big a deal, as the change doesn't affect stdout. 
The only issues are stderr and exit status, and that sort of script 
typically ignores both.

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