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[3.11] gh-101400: Fix incorrect lineno in exception message on contin… by corona10 · Pull Request #101447 · python/cpython · GitHub

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[3.11] gh-101400: Fix incorrect lineno in exception message on contin… #101447

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Merged
corona10 merged 4 commits into from
Jan 31, 2023
Conversation 6 Commits 4 Checks 0 Files changed
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[3.11] gh-101400: Fix incorrect lineno in exception message on contin… #101447

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[3.11] gh-101400: Fix incorrect lineno in exception message on contin…
corona10 Jan 30, 2023
ca4887d
nit
corona10 Jan 31, 2023
83b0735
Address code review
corona10 Jan 31, 2023
921008e
Update
corona10 Jan 31, 2023
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30 changes: 17 additions & 13 deletions Lib/test/test_syntax.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1907,9 +1907,6 @@ def error2():
"""
self._check_error(source, "parameter and nonlocal", lineno=3)

def test_break_outside_loop(self):
self._check_error("break", "outside loop")

def test_yield_outside_function(self):
self._check_error("if 0: yield", "outside function")
self._check_error("if 0: yield\nelse: x=1", "outside function")
Expand Down Expand Up @@ -1938,20 +1935,27 @@ def test_return_outside_function(self):
"outside function")

def test_break_outside_loop(self):
self._check_error("if 0: break", "outside loop")
self._check_error("if 0: break\nelse: x=1", "outside loop")
self._check_error("if 1: pass\nelse: break", "outside loop")
self._check_error("class C:\n if 0: break", "outside loop")
msg = "outside loop"
self._check_error("break", msg, lineno=1)
self._check_error("if 0: break", msg, lineno=1)
self._check_error("if 0: break\nelse: x=1", msg, lineno=1)
self._check_error("if 1: pass\nelse: break", msg, lineno=2)
self._check_error("class C:\n if 0: break", msg, lineno=2)
self._check_error("class C:\n if 1: pass\n else: break",
"outside loop")
msg, lineno=3)
self._check_error("with object() as obj:\n break",
msg, lineno=2)

def test_continue_outside_loop(self):
self._check_error("if 0: continue", "not properly in loop")
self._check_error("if 0: continue\nelse: x=1", "not properly in loop")
self._check_error("if 1: pass\nelse: continue", "not properly in loop")
self._check_error("class C:\n if 0: continue", "not properly in loop")
msg = "not properly in loop"
self._check_error("if 0: continue", msg, lineno=1)
self._check_error("if 0: continue\nelse: x=1", msg, lineno=1)
self._check_error("if 1: pass\nelse: continue", msg, lineno=2)
self._check_error("class C:\n if 0: continue", msg, lineno=2)
self._check_error("class C:\n if 1: pass\n else: continue",
"not properly in loop")
msg, lineno=3)
self._check_error("with object() as obj:\n continue",
msg, lineno=2)

def test_unexpected_indent(self):
self._check_error("foo()\n bar()\n", "unexpected indent",
Expand Down
2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Core and Builtins/2023-01-30-08-59-47.gh-issue-101400.Di_ZFm.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
Fix wrong lineno in exception message on :keyword:`continue` or
:keyword:`break` which are not in a loop. Patch by Dong-hee Na.
16 changes: 16 additions & 0 deletions Python/compile.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3259,12 +3259,20 @@ static int
compiler_break(struct compiler *c)
{
struct fblockinfo *loop = NULL;
int u_lineno = c->u->u_lineno;
int u_col_offset = c->u->u_col_offset;
int u_end_lineno = c->u->u_end_lineno;
int u_end_col_offset = c->u->u_end_col_offset;
/* Emit instruction with line number */
ADDOP(c, NOP);
if (!compiler_unwind_fblock_stack(c, 0, &loop)) {
return 0;
}
if (loop == NULL) {
c->u->u_lineno = u_lineno;
c->u->u_col_offset = u_col_offset;
c->u->u_end_lineno = u_end_lineno;
c->u->u_end_col_offset = u_end_col_offset;
return compiler_error(c, "'break' outside loop");
}
if (!compiler_unwind_fblock(c, loop, 0)) {
Expand All @@ -3278,12 +3286,20 @@ static int
compiler_continue(struct compiler *c)
{
struct fblockinfo *loop = NULL;
int u_lineno = c->u->u_lineno;
int u_col_offset = c->u->u_col_offset;
int u_end_lineno = c->u->u_end_lineno;
int u_end_col_offset = c->u->u_end_col_offset;
/* Emit instruction with line number */
ADDOP(c, NOP);
if (!compiler_unwind_fblock_stack(c, 0, &loop)) {
return 0;
}
if (loop == NULL) {
c->u->u_lineno = u_lineno;
c->u->u_col_offset = u_col_offset;
c->u->u_end_lineno = u_end_lineno;
c->u->u_end_col_offset = u_end_col_offset;
return compiler_error(c, "'continue' not properly in loop");
}
ADDOP_JUMP(c, JUMP, loop->fb_block);
Expand Down
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