[PR c++/92370] ICE with VC marker

https://gcc.gnu.org/ml/gcc-patches/2019-11/msg00323.html
	cp/
	PR c++/92370
	* parser.c (cp_parser_error_1): Check EOF and UNKNOWN_LOCATION
	when skipping over version control marker.

	testsuite/
	PR c++/92370
	* g++.dg/pr92370.C: New.

From-SVN: r277853

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 2bc6037037cdcf4d80ca10aa11173195173e97fa..4d9d56755f32ae5593cf0ac623c86f9f7a49ca52 100644 (file)
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2019-11-05  Nathan Sidwell  <nathan@acm.org>
+
+       PR c++/92370
+       * parser.c (cp_parser_error_1): Check EOF and UNKNOWN_LOCATION
+       when skipping over version control marker.
+
 2019-11-05  Jakub Jelinek  <jakub@redhat.com>
 
        PR c++/92343

diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 3ed282fd4b2f9ee4c7c1fef9226d155f68cd18be..bce7161a086094dd104aae011dc1808a79d584d4 100644 (file)
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -2890,12 +2890,16 @@ cp_parser_error_1 (cp_parser* parser, const char* gmsgid,
          error_at (loc, "version control conflict marker in file");
          expanded_location token_exploc = expand_location (token->location);
          /* Consume tokens until the end of the source line.  */
-         while (1)
+         for (;;)
            {
              cp_lexer_consume_token (parser->lexer);
              cp_token *next = cp_lexer_peek_token (parser->lexer);
-             if (next == NULL)
+             if (next->type == CPP_EOF)
                break;
+             if (next->location == UNKNOWN_LOCATION
+                 || loc == UNKNOWN_LOCATION)
+               break;
+
              expanded_location next_exploc = expand_location (next->location);
              if (next_exploc.file != token_exploc.file)
                break;

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 248d180774651dc0cd02579c86e46b7e6f899750..37c446913c2767f30b9369665856d06b68d3d85b 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-11-05  Nathan Sidwell  <nathan@acm.org>
+
+       PR c++/92370
+       * g++.dg/pr92370.C: New.
+
 2019-11-04  Martin Sebor  <msebor@redhat.com>
 
        PR middle-end/92341

diff --git a/gcc/testsuite/g++.dg/pr92370.C b/gcc/testsuite/g++.dg/pr92370.C
new file mode 100644 (file)
index 0000000..8f0019a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/pr92370.C
@@ -0,0 +1,3 @@
+// PR 92370 ICE with conlict marker
+
+<<<<<<<>>>>>>> // { dg-error "conflict marker" }