[jdk26] RFR: 8374642: EscapeHash macro fails with GNU make 4.3 and 4.4

Wed Jan 7 22:05:07 UTC 2026

This pull request contains a backport of commit [383fe1ef](https://github.com/openjdk/jdk/commit/383fe1efc3a23385b8576e20f458f91085c6325e) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Erik Joelsson on 7 Jan 2026 and was reviewed by Tim Bell and Aleksey Shipilev.

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Commit messages:
 - Backport 383fe1efc3a23385b8576e20f458f91085c6325e

Changes: https://git.openjdk.org/jdk/pull/29099/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29099&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374642
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/29099.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29099/head:pull/29099

PR: https://git.openjdk.org/jdk/pull/29099