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Valgrind may have found sth added by sjamaan on Tue Jun 30 11:23:20 2026

==206542== Conditional jump or move depends on uninitialised value(s)
==206542==    at 0x4D449B3: C_tm_get (posixunix.c:355)
==206542==    by 0x4D454E8: stub2147 (posixunix.c:726)
==206542==    by 0x4D9A02B: f_7522 (posixunix.c:14297)
==206542==    by 0x49C9BE6: f_15237 (library.c:19514)
==206542==    by 0x519858D: allocate_bytevector_2 (runtime.c:10343)
==206542==    by 0x5198107: C_allocate_bytevector (runtime.c:10302)
==206542==    by 0x49C9A42: f_15227 (library.c:19496)
==206542==    by 0x4D99F2D: f_7514 (posixunix.c:14283)
==206542==    by 0x4AF0DA0: f_35025 (library.c:63210)
==206542==    by 0x4D99C39: f_7510 (posixunix.c:14255)
==206542==    by 0x4AF0DA0: f_35025 (library.c:63210)
==206542==    by 0x4D999AC: f_7493 (posixunix.c:14230)
==206542== 
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
[debug] resizing heap dynamically from 12288k to 24576k ...
[debug] running 10 finalizer(s) (0 live, 10 allocated) ...
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
[debug] running 30 finalizer(s) (0 live, 30 allocated) ...
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
==206542== Warning: invalid file descriptor -1 in syscall close()
[panic] Detected corrupted data in heap - execution terminated

...more...
spiffy.scm:265: chicken.time#current-seconds
spiffy.scm:265: chicken.time.posix#seconds->utc-time
spiffy.scm:265: ##sys#list->vector
spiffy.scm:265: with-headers
spiffy.scm:352: current-response
spiffy.scm:355: current-response
spiffy.scm:355: intarweb#response-headers
spiffy.scm:354: intarweb#headers
spiffy.scm:351: intarweb#update-response
spiffy.scm:350: ##sys#dynamic-wind
spiffy.scm:350: current-response482483
spiffy.scm:350: current-response482483
spiffy.scm:350: current-response482483
spiffy.scm:356: thunk
spiffy.scm:267: current-response
spiffy.scm:267: intarweb#write-response 	<--
==206542== 
==206542== HEAP SUMMARY:
==206542==     in use at exit: 26,798,889 bytes in 17,179 blocks
==206542==   total heap usage: 4,961,019 allocs, 4,943,840 frees, 507,481,412 bytes allocated
==206542== 
==206542== LEAK SUMMARY:
==206542==    definitely lost: 0 bytes in 0 blocks
==206542==    indirectly lost: 0 bytes in 0 blocks
==206542==      possibly lost: 367,352 bytes in 618 blocks
==206542==    still reachable: 26,431,537 bytes in 16,561 blocks
==206542==                       of which reachable via heuristic:
==206542==                         length64           : 49,664 bytes in 449 blocks
==206542==         suppressed: 0 bytes in 0 blocks
==206542== Rerun with --leak-check=full to see details of leaked memory
==206542== 
==206542== Use --track-origins=yes to see where uninitialised values come from
==206542== For lists of detected and suppressed errors, rerun with: -s
==206542== ERROR SUMMARY: 4346 errors from 4 contexts (suppressed: 0 from 0)

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What's the R5RS procedure to access the second element of a pair?
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