diff options
Diffstat (limited to 'src/glsl/glcpp/glcpp-lex.l')
| -rw-r--r-- | src/glsl/glcpp/glcpp-lex.l | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/glsl/glcpp/glcpp-lex.l b/src/glsl/glcpp/glcpp-lex.l index cb5ee9984f8..1c3e0ab252d 100644 --- a/src/glsl/glcpp/glcpp-lex.l +++ b/src/glsl/glcpp/glcpp-lex.l @@ -161,6 +161,10 @@ glcpp_lex_update_state_per_token (glcpp_parser_t *parser, int token) %option stack %option never-interactive + /* Note: When adding any start conditions to this list, you must also + * update the "Internal compiler error" catch-all rule near the end of + * this file. */ + %x DONE COMMENT HASH UNREACHABLE DEFINE NEWLINE_CATCHUP SPACE [[:space:]] @@ -534,6 +538,15 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]? RETURN_TOKEN (NEWLINE); } + /* This is a catch-all to avoid the annoying default flex action which + * matches any character and prints it. If any input ever matches this + * rule, then we have made a mistake above and need to fix one or more + * of the preceding patterns to match that input. */ + +<INITIAL,DONE,COMMENT,DEFINE,HASH,NEWLINE_CATCHUP>. { + glcpp_error(yylloc, yyextra, "Internal compiler error: Unexpected character: %s", yytext); +} + /* We don't actually use the UNREACHABLE start condition. We only have this action here so that we can pretend to call some generated functions, (to avoid "defined but not used" |