[PATCH v3 1/2] scripts: Add "|" operator support to glibcpp's parsing

[Shahab Vahedi via Libc-alpha <libc-alpha@sourceware.org>]

From the tests point of view, this is a necessary step for another
patch [1] and allows parsing macros such as "#define A | B".  Without
it, a few tests [2] choke when the other patch [1] is applied:

/src/glibc/scripts/../elf/elf.h:4167: error: uninterpretable macro
token sequence: ( EF_ARC_MACH_MSK | EF_ARC_OSABI_MSK )
Traceback (most recent call last):
    File "/src/glibc/elf/tst-glibcelf.py", line 23, in <module>
      import glibcelf
    File "/src/glibc/scripts/glibcelf.py", line 226, in <module>
      _elf_h = _parse_elf_h()
               ^^^^^^^^^^^^^^
    File "/src/glibc/scripts/glibcelf.py", line 223, in _parse_elf_h
      raise IOError('parse error in elf.h')
  OSError: parse error in elf.h

[1] ARC: update definitions in elf/elf.h
https://sourceware.org/pipermail/libc-alpha/2022-November/143503.html

[2]
tst-glibcelf, tst-relro-ldso, and tst-relro-libc

Signed-off-by: Shahab Vahedi <shahab@synopsys.com>
---
 scripts/glibcpp.py     | 1 +
 support/tst-glibcpp.py | 1 +
 2 files changed, 2 insertions(+)

diff --git a/scripts/glibcpp.py b/scripts/glibcpp.py
index 455459a609..2f39979894 100644
--- a/scripts/glibcpp.py
+++ b/scripts/glibcpp.py
@@ -346,6 +346,7 @@ RE_SPLIT_INTEGER_SUFFIX = re.compile(r'([^ullULL]+)([ullULL]*)')
 BINARY_OPERATORS = {
     '+': operator.add,
     '<<': operator.lshift,
+    '|': operator.or_,
 }
 
 # Use the general-purpose dict type if it is order-preserving.
diff --git a/support/tst-glibcpp.py b/support/tst-glibcpp.py
index a2db1916cc..cca8bd6c44 100644
--- a/support/tst-glibcpp.py
+++ b/support/tst-glibcpp.py
@@ -131,6 +131,7 @@ check_macro_eval('#define A 1', {'A': 1})
 check_macro_eval('#define A (1)', {'A': 1})
 check_macro_eval('#define A (1 + 1)', {'A': 2})
 check_macro_eval('#define A (1U << 31)', {'A': 1 << 31})
+check_macro_eval('#define A (1 | 2)', {'A': 1 | 2})
 check_macro_eval('''\
 #define A (B + 1)
 #define B 10
-- 
2.38.1