https://sourceware.org/bugzilla/show_bug.cgi?id=23173
Bug ID: 23173
Summary: eu-addr2line does not flush its output, causing
problems when used from a script
Product: elfutils
Version: unspecified
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: tools
Assignee: unassigned at sourceware dot org
Reporter: luke at diamand dot org
CC: elfutils-devel at sourceware dot org
Target Milestone: ---
I noticed that eu-addr2line just write its output to stdout without any
flushing.
That means that if you are using it in a pipe (in my case from Python) feeding
addresses to stdin one at a time, you won't get any output for quite some time.
Just adding a call to fflush(stdout) fixes the problem.
I noticed that the binutils addr2line utility does exactly this:
/* fflush() is essential for using this command as a server
child process that reads addresses from a pipe and responds
with line number information, processing one address at a
time. */
fflush (stdout);
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