diff options
| -rw-r--r-- | bin/sh/arith_lex.l | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/bin/sh/arith_lex.l b/bin/sh/arith_lex.l index f0ed3d5..f0d9cb3 100644 --- a/bin/sh/arith_lex.l +++ b/bin/sh/arith_lex.l @@ -51,6 +51,13 @@ __FBSDID("$FreeBSD$"); int yylex(void); +struct varname +{ + struct varname *next; + char name[1]; +}; +static struct varname *varnames; + #undef YY_INPUT #define YY_INPUT(buf,result,max) \ result = (*buf = *arith_buf++) ? 1 : YY_NULL; @@ -80,11 +87,14 @@ int yylex(void); * If variable doesn't exist, we should initialize * it to zero. */ - char *temp; + struct varname *temp; if (lookupvar(yytext) == NULL) setvarsafe(yytext, "0", 0); - temp = (char *)ckmalloc(strlen(yytext) + 1); - yylval.s_value = strcpy(temp, yytext); + temp = ckmalloc(sizeof(struct varname) + + strlen(yytext)); + temp->next = varnames; + varnames = temp; + yylval.s_value = strcpy(temp->name, yytext); return ARITH_VAR; } @@ -130,5 +140,15 @@ int yylex(void); void arith_lex_reset(void) { + struct varname *name, *next; + YY_NEW_FILE; + + name = varnames; + while (name != NULL) { + next = name->next; + ckfree(name); + name = next; + } + varnames = NULL; } |
