[PATCH 1/2] tests:common: Increse buffer size to allow input for PQC testing.

[Jacob Bachmeyer]

On 6/26/25 00:10, NIIBE Yutaka via Gcrypt-devel wrote:
> * tests/t-common.h (read_textline): Increase the buffer size.

I understand that this is testsuite code, so a fixed stack buffer is not 
the serious problem it could otherwise be, but why not replace the fixed 
buffer with a heap-allocated buffer, expanded as needed using 
realloc()?  This would also allow the working buffer to be returned and 
freed by the caller, eliminating the final xstrdup() call.

A quick glance at src/stdmem.c suggests that libgcrypt already has the 
infrastructure to implement this.

I suggest making the buffer expansion power-of-2 starting from some 
initial size (256?) and doubling each time the buffer is filled without 
having read a complete line.  A hard limit (1MiB?) could be useful as well.


-- Jacob
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