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Fix #1569998: no break inside try statement (outside loop) allowed.

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(backport from rev. 52129)
This commit is contained in:
Georg Brandl 2006-10-08 07:12:23 +00:00
parent 74284b9606
commit a5fe3ef8d8
3 changed files with 30 additions and 1 deletions
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14
Python/compile.c
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@ -187,6 +187,8 @@ static int compiler_push_fblock(struct compiler *, enum fblocktype,
basicblock *);
static void compiler_pop_fblock(struct compiler *, enum fblocktype,
basicblock *);
/* Returns true if there is a loop on the fblock stack. */
static int compiler_in_loop(struct compiler *);
static int inplace_binop(struct compiler *, operator_ty);
static int expr_constant(expr_ty e);
@ -2764,7 +2766,7 @@ compiler_visit_stmt(struct compiler *c, stmt_ty s)
case Pass_kind:
break;
case Break_kind:
if (!c->u->u_nfblocks)
if (!compiler_in_loop(c))
return compiler_error(c, "'break' outside loop");
ADDOP(c, BREAK_LOOP);
break;
@ -3754,6 +3756,16 @@ compiler_pop_fblock(struct compiler *c, enum fblocktype t, basicblock *b)
assert(u->u_fblock[u->u_nfblocks].fb_block == b);
}
static int
compiler_in_loop(struct compiler *c) {
int i;
struct compiler_unit *u = c->u;
for (i = 0; i < u->u_nfblocks; ++i) {
if (u->u_fblock[i].fb_type == LOOP)
return 1;
}
return 0;
}
/* Raises a SyntaxError and returns 0.
If something goes wrong, a different exception may be raised.
*/