scc

simple c99 compiler
git clone git://git.simple-cc.org/scc
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commit 41b20e066ab2f220c3a6b5107a546d17fbcc891f
parent 4eff786be3921ff7e1fc90b57e7f0a8932a1fda1
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Mon, 16 Jan 2017 16:17:08 +0100

[cc1] Ue tok2str() in character()

This function handles the buffer overrun.

Diffstat:
Mcc1/lex.c | 11+++--------
1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/cc1/lex.c b/cc1/lex.c @@ -278,7 +278,7 @@ tok2str(void) { if ((yylen = input->p - input->begin) > INTIDENTSIZ) error("token too big"); - strncpy(yytext, input->begin, yylen); + memcpy(yytext, input->begin, yylen); yytext[yylen] = '\0'; input->begin = input->p; } @@ -467,11 +467,9 @@ escape(void) static unsigned character(void) { - char c, *p; + char c; Symbol *sym; - size_t size; - p = input->p; if ((c = *++input->p) == '\\') c = escape(); else @@ -482,14 +480,11 @@ character(void) else ++input->p; - size = input->p - p; - memcpy(yytext, p, size); - yytext[size] = '\0'; - sym = newsym(NS_IDEN, NULL); sym->u.i = c; sym->type = inttype; yylval.sym = sym; + tok2str(); return CONSTANT; }