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Do not allow NUL bytes in string literals or character constants.

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This commit is contained in:
Paul Eggert
2003-10-07 07:32:57 +00:00
parent 91d2c560a8
commit 92ac370570
3 changed files with 17 additions and 1 deletions
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8
src/scan-gram.l
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@@ -371,6 +371,7 @@ splice (\\[ \f\t\v]*\n)*
return STRING;
}
\0 complain_at (*loc, _("invalid null character"));
.|\n STRING_GROW;
<<EOF>> unexpected_eof (token_start, "\""); BEGIN INITIAL;
}
@@ -397,6 +398,7 @@ splice (\\[ \f\t\v]*\n)*
return ID;
}
\0 complain_at (*loc, _("invalid null character"));
.|\n STRING_GROW;
<<EOF>> unexpected_eof (token_start, "'"); BEGIN INITIAL;
}
@@ -412,6 +414,8 @@ splice (\\[ \f\t\v]*\n)*
unsigned long c = strtoul (yytext + 1, 0, 8);
if (UCHAR_MAX < c)
complain_at (*loc, _("invalid escape sequence: %s"), quote (yytext));
else if (! c)
complain_at (*loc, _("invalid null character: %s"), quote (yytext));
else
obstack_1grow (&obstack_for_string, c);
}
@@ -422,6 +426,8 @@ splice (\\[ \f\t\v]*\n)*
c = strtoul (yytext + 2, 0, 16);
if (UCHAR_MAX < c || get_errno ())
complain_at (*loc, _("invalid escape sequence: %s"), quote (yytext));
else if (! c)
complain_at (*loc, _("invalid null character: %s"), quote (yytext));
else
obstack_1grow (&obstack_for_string, c);
}
@@ -441,6 +447,8 @@ splice (\\[ \f\t\v]*\n)*
int c = convert_ucn_to_byte (yytext);
if (c < 0)
complain_at (*loc, _("invalid escape sequence: %s"), quote (yytext));
else if (! c)
complain_at (*loc, _("invalid null character: %s"), quote (yytext));
else
obstack_1grow (&obstack_for_string, c);
}