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re PR preprocessor/30805 (Internal compiler error when using "x##,##__VA_ARGS__" in macro)

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libcpp
	PR preprocessor/30805:
	* macro.c (paste_tokens): Handle padding token.
	(paste_tokens): Don't abort unless padding has PASTE_LEFT flag.
gcc/testsuite
	PR preprocessor/30805:
	* gcc.dg/cpp/pr30805.c: New file.

From-SVN: r129827
This commit is contained in:
Tom Tromey
2007-11-01 18:20:48 +00:00
committed by Tom Tromey
parent 233a722b41
commit f373b44d28
4 changed files with 23 additions and 3 deletions
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5
gcc/testsuite/ChangeLog
View File

@@ -1,3 +1,8 @@
2007-11-01 Tom Tromey <tromey@redhat.com>
PR preprocessor/30805:
* gcc.dg/cpp/pr30805.c: New file.
2007-11-01 Janis Johnson <janis187@us.ibm.com>
PR testsuite/25352

5
gcc/testsuite/gcc.dg/cpp/pr30805.c Normal file
View File

@@ -0,0 +1,5 @@
/* PR preprocessor/30805 - ICE while token pasting. */
/* { dg-do preprocess } */
#define A(x,...) x##,##__VA_ARGS__
A(1)

6
libcpp/ChangeLog
View File

@@ -1,3 +1,9 @@
2007-11-01 Tom Tromey <tromey@redhat.com>
PR preprocessor/30805:
* macro.c (paste_tokens): Handle padding token.
(paste_tokens): Don't abort unless padding has PASTE_LEFT flag.
2007-10-31 Tom Tromey <tromey@redhat.com>
PR preprocessor/30786:

10
libcpp/macro.c
View File

@@ -451,7 +451,9 @@ paste_tokens (cpp_reader *pfile, const cpp_token **plhs, const cpp_token *rhs)
false doesn't work, since we want to clear the PASTE_LEFT flag. */
if ((*plhs)->type == CPP_DIV && rhs->type != CPP_EQ)
*end++ = ' ';
end = cpp_spell_token (pfile, rhs, end, false);
/* In one obscure case we might see padding here. */
if (rhs->type != CPP_PADDING)
end = cpp_spell_token (pfile, rhs, end, false);
*end = '\n';
cpp_push_buffer (pfile, buf, end - buf, /* from_stage3 */ true);
@@ -514,8 +516,10 @@ paste_all_tokens (cpp_reader *pfile, const cpp_token *lhs)
rhs = *FIRST (context).ptoken++;
if (rhs->type == CPP_PADDING)
abort ();
{
if (rhs->flags & PASTE_LEFT)
abort ();
}
if (!paste_tokens (pfile, &lhs, rhs))
break;
}