llvm-project

f4d04814 - Fix failure for clang/test/Frontend/rewrite-includes-bom.c for zOS (#197501)

Fix failure for clang/test/Frontend/rewrite-includes-bom.c for zOS (#197501) This test is failing on zOS due to the lowercase HEX characters in the BOM. This PR changes the test to do a case-insensitive search.