Since r11-2095 we pass flags to cp_lexer_get_preprocessor_token, and
cp_lexer_new_main passes C_LEX_STRING_NO_JOIN when lexing most of the
translation unit, but doesn't do that for the very first token; as a
result, if the first token is a string literal, we try to join strings and
get confused if that encounters a pragma.
PR c++/108504
gcc/cp/ChangeLog:
* parser.cc (cp_lexer_new_main): Pass C_LEX_STRING_NO_JOIN for first
token, too.
gcc/testsuite/ChangeLog:
* g++.dg/ext/pragma1.C: New test.
/* It's possible that parsing the first pragma will load a PCH file,
which is a GC collection point. So we have to do that before
allocating any memory. */
- cp_lexer_get_preprocessor_token (0, &token);
+ cp_lexer_get_preprocessor_token (C_LEX_STRING_NO_JOIN, &token);
cp_parser_initial_pragma (&token);
c_common_no_more_pch ();
--- /dev/null
+// PR c++/108504
+
+"1" // { dg-error "" }
+#pragma GCC diagnostic push