Defined in 3 files as a macro:

• contrib/llvm-project/llvm/lib/Support/regex_impl.h, line 90 (as a macro)
• contrib/nvi/regex/regex.h, line 96 (as a macro)
• include/regex.h, line 103 (as a macro)

Referenced in 5 files:

• contrib/llvm-project/llvm/lib/Support/regexec.c, line 158
• contrib/netbsd-tests/lib/libc/regex/main.c, line 378
• contrib/nvi/regex/regexec.c, line 169
• lib/libc/regex/grot/main.c, line 349
• lib/libc/regex/regexec.c, line 231