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cpplex.c (trigraph_ok): Ensure we don't warn twice.

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* cpplex.c (trigraph_ok): Ensure we don't warn twice.
	* cpplib.h (struct cpp_buffer): New member last_Wtrigraphs.

From-SVN: r37669
This commit is contained in:
Neil Booth 2000-11-22 20:36:10 +00:00 committed by Neil Booth
parent a165f034f9
commit 4a5b68a2f7
3 changed files with 16 additions and 3 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2000-11-22 Neil Booth <neilb@earthling.net>
* cpplex.c (trigraph_ok): Ensure we don't warn twice.
* cpplib.h (struct cpp_buffer): New member last_Wtrigraphs.
2000-11-22 Richard Henderson <rth@redhat.com>
* haifa-sched.c (sched_analyze_1): Don't special-case calls

10
gcc/cpplex.c
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@ -159,9 +159,13 @@ trigraph_ok (pfile, from_char)
"trigraph ??%c converted to %c",
(int) from_char,
(int) _cpp_trigraph_map[from_char]);
else
cpp_warning_with_line (pfile, buffer->lineno, CPP_BUF_COL (buffer) - 2,
"trigraph ??%c ignored", (int) from_char);
else if (buffer->cur != buffer->last_Wtrigraphs)
{
buffer->last_Wtrigraphs = buffer->cur;
cpp_warning_with_line (pfile, buffer->lineno,
CPP_BUF_COL (buffer) - 2,
"trigraph ??%c ignored", (int) from_char);
}
}
return accept;

4
gcc/cpplib.h
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@ -282,6 +282,10 @@ struct cpp_buffer
/* Line number at line_base (above). */
unsigned int lineno;
/* Because of the way the lexer works, -Wtrigraphs can sometimes
warn twice for the same trigraph. This helps prevent that. */
const unsigned char *last_Wtrigraphs;
/* True if we have already warned about C++ comments in this file.
The warning happens only for C89 extended mode with -pedantic on,
or for -Wtraditional, and only once per file (otherwise it would