28615552309
75%

Ran 02 Jul 2026 07:24PM UTC

Jobs 1

Files 217

Run time 1min

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Committed 02 Jul 2026 07:16PM UTC coverage: 75.443% (-0.02%) from 75.458%

Build # 28615552309

Build Type

push

github

Committed by

bluca

Commit Message

Fix signed char sign extension in UDP engine in_event()

On platforms where char is signed (Linux x86-64, MSVC, ARM with
-fsigned-char), _in_buffer[0] with a byte value >= 0x80 undergoes
sign extension when assigned to int group_size. For example, byte
0x80 becomes -128. This negative value is then implicitly cast to
size_t in msg.init_size(), producing a value near SIZE_MAX. The
allocation fails and errno_assert terminates the process.

The out_event() send path already correctly uses
static_cast<unsigned char> for the group size byte. Apply the same
cast on the receive path for consistency.

Signed-off-by: Tristan Music <tristmd@gmail.com>

Coverage Stats

15146 of 20076 relevant lines covered (75.44%)

27068.84 hits per line

Coverage Regressions

Lines	Coverage	∆	File
11	79.53	0.0%	libzmq/src/udp_engine.cpp
6	73.68	-10.53%	libzmq/src/tipc_connecter.cpp
3	84.33	-0.6%	libzmq/src/ctx.cpp

Jobs

ID	Job ID	Ran	Files	Coverage
1	28615552309.1	02 Jul 2026 07:24PM UTC	217	75.44	GitHub Action Run

zeromq / libzmq / 28615552309
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