xfnw/plan9fox
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

dtracy: fix lexer bug

Browse source
This commit is contained in:
aiju 2018-12-08 18:04:25 +00:00
parent 722a1a3334
commit b96be17376
1 changed files with 7 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
sys/src/cmd/dtracy/lex.c
View file

@ -7,7 +7,7 @@
#include "fns.h"
#include "y.tab.h"
char *str, *strp;
char *str, *strp, *stre;
int lineno = 1;
int errors;
@ -60,6 +60,7 @@ void
lexstring(char *s)
{
str = strp = s;
stre = str + strlen(str);
}
void
@ -88,7 +89,10 @@ yyerror(char *msg)
static int
getch(void)
{
if(*strp == 0) return -1;
if(strp >= stre){
strp++;
return -1;
}
return *strp++;
}
@ -96,8 +100,7 @@ static void
ungetch(void)
{
assert(strp > str);
if(*strp != 0)
strp--;
strp--;
}
int