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Parenthesize args in yyless() and unput() replacement text

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so they are safer when used with expressions.

MFC after:	1 week
This commit is contained in:
Jens Schweikhardt 2012-04-10 15:29:28 +00:00
parent efbebba22a
commit da4b9d2971
1 changed files with 3 additions and 3 deletions
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6
usr.bin/lex/flex.skl
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@ -122,7 +122,7 @@ extern FILE *yyin, *yyout;
#define EOB_ACT_LAST_MATCH 2
/* The funky do-while in the following #define is used to turn the definition
* int a single C statement (which needs a semi-colon terminator). This
* into a single C statement (which needs a semi-colon terminator). This
* avoids problems with code like:
*
* if ( condition_holds )
@ -143,12 +143,12 @@ extern FILE *yyin, *yyout;
/* Undo effects of setting up yytext. */ \
*yy_cp = yy_hold_char; \
YY_RESTORE_YY_MORE_OFFSET \
yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \
yy_c_buf_p = yy_cp = yy_bp + (n) - YY_MORE_ADJ; \
YY_DO_BEFORE_ACTION; /* set up yytext again */ \
} \
while ( 0 )
#define unput(c) yyunput( c, yytext_ptr )
#define unput(c) yyunput( (c), yytext_ptr )
/* The following is because we cannot portably get our hands on size_t
* (without autoconf's help, which isn't available because we want