mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-02 16:13:13 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

SF bug [#455775] float parsing discrepancy.

Browse source 
PyTokenizer_Get:  error if exponent contains no digits (3e, 2.0e+, ...).
This commit is contained in:
Tim Peters 2001-08-27 19:19:28 +00:00
parent de1d4957c0
commit 9aa70d93aa
2 changed files with 23 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

15
Lib/test/test_compile.py
View file

@ -50,3 +50,18 @@ try:
raise TestFailed, "non-default args after default" raise TestFailed, "non-default args after default"
except SyntaxError: except SyntaxError:
pass pass
if verbose:
print "testing bad float literals"
def expect_error(s):
try:
eval(s)
raise TestFailed("%r accepted" % s)
except SyntaxError:
pass
expect_error("2e")
expect_error("2.0e+")
expect_error("1e-")
expect_error("3-4e/21")

13
Parser/tokenizer.c
View file

@ -756,9 +756,7 @@ PyTokenizer_Get(register struct tok_state *tok, char **p_start,
if (c == 'l' || c == 'L') if (c == 'l' || c == 'L')
c = tok_nextc(tok); c = tok_nextc(tok);
else { else {
/* Accept floating point numbers. /* Accept floating point numbers. */
XXX This accepts incomplete things like
XXX 12e or 1e+; worry run-time */
if (c == '.') { if (c == '.') {
fraction: fraction:
/* Fraction */ /* Fraction */
@ -771,9 +769,14 @@ PyTokenizer_Get(register struct tok_state *tok, char **p_start,
c = tok_nextc(tok); c = tok_nextc(tok);
if (c == '+' || c == '-') if (c == '+' || c == '-')
c = tok_nextc(tok); c = tok_nextc(tok);
while (isdigit(c)) { if (!isdigit(c)) {
c = tok_nextc(tok); tok->done = E_TOKEN;
tok_backup(tok, c);
return ERRORTOKEN;
} }
do {
c = tok_nextc(tok);
} while (isdigit(c));
} }
#ifndef WITHOUT_COMPLEX #ifndef WITHOUT_COMPLEX
if (c == 'j' || c == 'J') if (c == 'j' || c == 'J')