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SF bug [#455775] float parsing discrepancy. 

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
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15
Lib/test/test_compile.py
View File

@ -50,3 +50,18 @@ try:
raise TestFailed, "non-default args after default"
except SyntaxError:
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')
c = tok_nextc(tok);
else {
/* Accept floating point numbers.
XXX This accepts incomplete things like
XXX 12e or 1e+; worry run-time */
/* Accept floating point numbers. */
if (c == '.') {
fraction:
/* Fraction */
@ -771,9 +769,14 @@ PyTokenizer_Get(register struct tok_state *tok, char **p_start,
c = tok_nextc(tok);
if (c == '+' || c == '-')
c = tok_nextc(tok);
while (isdigit(c)) {
c = tok_nextc(tok);
if (!isdigit(c)) {
tok->done = E_TOKEN;
tok_backup(tok, c);
return ERRORTOKEN;
}
do {
c = tok_nextc(tok);
} while (isdigit(c));
}
#ifndef WITHOUT_COMPLEX
if (c == 'j' || c == 'J')