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Re: Fewer mallocs is better, episode #47
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From: Timothe Litt <litt_at_acm.org>
Date: Thu, 3 Feb 2022 21:10:12 -0500
On 03-Feb-22 21:02, Henrik Holst via curl-library wrote:
> problems is that ltrace produces zero output, if I compile curl with
> --no-pie then ltrace produces some output but not a single strlen for
> some reason so I gave up on that and found uftrace instead which works
> but only shows which functions that are called and not the arguments.
>
> /HH
>
Best bet is to compile with static libraries, preferably with -O0 -g,
and use gdb.
The string functions may be inlined; gdb will do better than ltrace.
And gdb lets you print any helpful variable in scope...
Timothe Litt
ACM Distinguished Engineer
--------------------------
This communication may not represent the ACM or my employer's views,
if any, on the matters discussed.
Received on 2022-02-04
Date: Thu, 3 Feb 2022 21:10:12 -0500
On 03-Feb-22 21:02, Henrik Holst via curl-library wrote:
> problems is that ltrace produces zero output, if I compile curl with
> --no-pie then ltrace produces some output but not a single strlen for
> some reason so I gave up on that and found uftrace instead which works
> but only shows which functions that are called and not the arguments.
>
> /HH
>
Best bet is to compile with static libraries, preferably with -O0 -g,
and use gdb.
The string functions may be inlined; gdb will do better than ltrace.
And gdb lets you print any helpful variable in scope...
Timothe Litt
ACM Distinguished Engineer
--------------------------
This communication may not represent the ACM or my employer's views,
if any, on the matters discussed.
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