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```
==28724==ERROR: AddressSanitizer: stack-use-after-scope on address 0x7f028b500060 at pc 0x55edc7ea2e85 bp 0x7fff7d70a4d0 sp 0x7fff7d70a4c8
READ of size 4 at 0x7f028b500060 thread T0
/usr/bin/llvm-symbolizer-18: /home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4: no version information available (required by /usr/bin/llvm-symbolizer-18)
/usr/bin/llvm-symbolizer-18: symbol lookup error: /home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4: undefined symbol: __asan_option_detect_stack_use_after_return
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't write to symbolizer at fd 9
/usr/bin/llvm-symbolizer-18: /home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4: no version information available (required by /usr/bin/llvm-symbolizer-18)
/usr/bin/llvm-symbolizer-18: symbol lookup error: /home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4: undefined symbol: __asan_option_detect_stack_use_after_return
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
==28724==WARNING: Can't read from symbolizer at fd 6
#0 0x55edc7ea2e84 (/home/runner/work/curl/curl/bld/tests/libtest/.libs/libtests+0x1b6e84) (BuildId: 7d9c526eeac6e37274bab929807a3ed93d8fe67c)
#1 0x7f028f6111dd (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x8111dd) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
#2 0x7f028f38b8c4 (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x58b8c4) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
#3 0x7f028f38d60a (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x58d60a) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
#4 0x7f028f3796a5 (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x5796a5) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
#5 0x7f028f11c442 (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x31c442) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
#6 0x7f028f11bd9c (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x31bd9c) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
#7 0x7f028f37891b (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x57891b) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
#8 0x7f028f2bb7f3 (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x4bb7f3) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
#9 0x7f028f28b01d (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x48b01d) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
#10 0x7f028f5e3ce4 (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x7e3ce4) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
#11 0x7f028f5de4c1 (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x7de4c1) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
curl#12 0x7f028f340504 (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x540504) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
curl#13 0x7f028f33dba1 (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x53dba1) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
curl#14 0x7f028f4f02bd (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x6f02bd) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
curl#15 0x7f028f212a09 (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x412a09) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
curl#16 0x7f028f211bae (/home/runner/work/curl/curl/bld/lib/.libs/libcurl.so.4+0x411bae) (BuildId: 8b44169afc81107024b77ec9a2942da0f6e28bfa)
curl#17 0x55edc7ea2c73 (/home/runner/work/curl/curl/bld/tests/libtest/.libs/libtests+0x1b6c73) (BuildId: 7d9c526eeac6e37274bab929807a3ed93d8fe67c)
curl#18 0x55edc7f7b832 (/home/runner/work/curl/curl/bld/tests/libtest/.libs/libtests+0x28f832) (BuildId: 7d9c526eeac6e37274bab929807a3ed93d8fe67c)
curl#19 0x7f028dc2a1c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 42c84c92e6f98126b3e2230ebfdead22c235b667)
curl#20 0x7f028dc2a28a (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 42c84c92e6f98126b3e2230ebfdead22c235b667)
curl#21 0x55edc7da3a34 (/home/runner/work/curl/curl/bld/tests/libtest/.libs/libtests+0xb7a34) (BuildId: 7d9c526eeac6e37274bab929807a3ed93d8fe67c)
Address 0x7f028b500060 is located in stack of thread T0 at offset 32 in frame
==28724==WARNING: Can't read from symbolizer at fd 6
#0 0x55edc7ea2717 (/home/runner/work/curl/curl/bld/tests/libtest/.libs/libtests+0x1b6717) (BuildId: 7d9c526eeac6e37274bab929807a3ed93d8fe67c)
This frame has 1 object(s):
[32, 36) 'counter' (line 91) <== Memory access at offset 32 is inside this variable
HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork
(longjmp and C++ exceptions *are* supported)
==28724==WARNING: Can't read from symbolizer at fd 6
SUMMARY: AddressSanitizer: stack-use-after-scope (/home/runner/work/curl/curl/bld/tests/libtest/.libs/libtests+0x1b6e84) (BuildId: 7d9c526eeac6e37274bab929807a3ed93d8fe67c)
Shadow bytes around the buggy address:
0x7f028b4ffd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x7f028b4ffe00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x7f028b4ffe80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x7f028b4fff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x7f028b4fff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x7f028b500000: f5 f5 f5 f5 f5 f5 f5 f5 f1 f1 f1 f1[f8]f3 f3 f3
0x7f028b500080: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5
0x7f028b500100: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5
0x7f028b500180: f1 f1 f1 f1 04 f2 f8 f3 f5 f5 f5 f5 f5 f5 f5 f5
0x7f028b500200: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5
0x7f028b500280: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==28724==ABORTING
```
https://github.com/curl/curl/actions/runs/15590177615/job/43906987845?pr=17598#step:39:1276
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