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[3.13] gh-142779: Initialize reserved field for proper padding (GH-142780) (#144160)

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gh-142779: Initialize reserved field for proper padding (GH-142780)

The jitdump specification specifies a reserved field for padding.

Initialize it so no garbage data is embedded in the jitdump files.
(cherry picked from commit 77bf4ba732)

Co-authored-by: stratakis <cstratak@redhat.com>
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Miss Islington (bot) 2026-01-22 18:29:57 +01:00 • committed by GitHub
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commit e4e36a716a
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Python/perf_jit_trampoline.c
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@ -372,6 +372,7 @@ 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