diff options
Diffstat (limited to 'gcc/cpplib.h')
| -rw-r--r-- | gcc/cpplib.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/gcc/cpplib.h b/gcc/cpplib.h index ccf8f92..bffd493 100644 --- a/gcc/cpplib.h +++ b/gcc/cpplib.h @@ -124,12 +124,17 @@ struct cpp_buffer char seen_eof; /* True if buffer contains escape sequences. - Currently there are three kinds: - "@-" means following identifier should not be macro-expanded. - "@ " means a token-separator. This turns into " " in final output + Currently there are two kinds: + "\r-" means following identifier should not be macro-expanded. + "\r " means a token-separator. This turns into " " in final output if not stringizing and needed to separate tokens; otherwise nothing. - "@@" means a normal '@'. - (An '@' inside a string stands for itself and is never an escape.) */ + Any other two-character sequence beginning with \r is an error. + + If this is NOT set, then \r is a one-character escape meaning backslash + newline. This is guaranteed not to occur in the middle of a token. + The two interpretations of \r do not conflict, because the two-character + escapes are used only in macro buffers, and backslash-newline is removed + from macro expansion text in collect_expansion and/or macarg. */ char has_escapes; }; |