https://github.com/python/cpython/commit/77bf4ba732a8736910bd6b7ec5a58b8ee833c95f
commit: 77bf4ba732a8736910bd6b7ec5a58b8ee833c95f
branch: main
author: stratakis <[email protected]>
committer: vstinner <[email protected]>
date: 2026-01-22T18:06:36+01:00
summary:
gh-142779: Initialize reserved field for proper padding (#142780)
The jitdump specification specifies a reserved field for padding.
Initialize it so no garbage data is embedded in the jitdump files.
files:
M Python/perf_jit_trampoline.c
diff --git a/Python/perf_jit_trampoline.c b/Python/perf_jit_trampoline.c
index 0ffa906d85cc6b..f51ab1b47a04f1 100644
--- a/Python/perf_jit_trampoline.c
+++ b/Python/perf_jit_trampoline.c
@@ -398,6 +398,7 @@ static void perf_map_jit_write_header(int pid, FILE*
out_file) {
header.version = 1; // Current jitdump version
header.size = sizeof(Header); // Header size for validation
header.elf_mach_target = GetElfMachineArchitecture(); // Target
architecture
+ header.reserved = 0; // padding reserved for
future use
header.process_id = pid; // Process identifier
header.time_stamp = get_current_time_microseconds(); // Creation time
header.flags = 0; // No special flags
currently used
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