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Date: Tue, 14 Dec 2021 10:22:42 -0500
From: Andrew Snyder <arsnyder16@...il.com>
To: musl@...ts.openwall.com
Subject: print does not support variable width plus padding
I would like to be cc'd on the replies
Looks like a bug in the musl printf functionality
When using variable width format string and specifying a padding musl fails
to format properly.
I am using musl indirectly through an emscripten compile of a native
library.
Consider the following repro steps using alpine docker image. Correct
results exist when using ubuntu image
# Correct expected ' 1'
docker run -it --rm alpine printf %2i 1
# Correct expected ' 1'
docker run -it --rm alpine printf %*i 2 1
# Correct expected '01'
docker run -it --rm alpine printf %02i 1
# errors, Expected '01'
docker run -it --rm alpine printf %0*i 2 1
# Correct expected ' 1'
docker run -it --rm ubuntu printf %2i 1
# Correct expected ' 1'
docker run -it --rm ubuntu printf %*i 2 1
# Correct expected '01'
docker run -it --rm ubuntu printf %02i 1
# Correct expected '01'
docker run -it --rm ubuntu printf %0*i 2 1
--Andrew
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