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yacc: Fix a bug from at least 1995.

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Fix a bug folding newlines in strings constants in C code snippets
in YACC.  This code has existed since at least 2nd Edition Plan 9.

Change-Id: Iba17b89a6529ac9fa6610bf0b44f551904174c26
Signed-off-by: Dan Cross <cross@gajendra.net>
Reviewed-on: https://plan9port-review.googlesource.com/2840
Reviewed-by: Russ Cox <rsc@swtch.com>
This commit is contained in:
Dan Cross 2017-04-20 21:35:23 +00:00 committed by Russ Cox
parent 94b38bdb72
commit 9e52ea8a29
1 changed files with 2 additions and 1 deletions
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3
src/cmd/yacc.c
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@ -2130,11 +2130,12 @@ swt:
c = Bgetrune(finput); c = Bgetrune(finput);
if(c == '\n') if(c == '\n')
lineno++; lineno++;
} else } else {
if(c == match) if(c == match)
goto lcopy; goto lcopy;
if(c == '\n') if(c == '\n')
error("newline in string or char. const."); error("newline in string or char. const.");
}
Bputrune(faction, c); Bputrune(faction, c);
} }
error("EOF in string or character constant"); error("EOF in string or character constant");