/* Parse C expressions for cpplib.
- Copyright (C) 1987, 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2001,
- 2002, 2004, 2008, 2009, 2010, 2011 Free Software Foundation.
+ Copyright (C) 1987-2014 Free Software Foundation, Inc.
Contributed by Per Bothner, 1994.
This program is free software; you can redistribute it and/or modify it
static cpp_num append_digit (cpp_num, int, int, size_t);
static cpp_num parse_defined (cpp_reader *);
-static cpp_num eval_token (cpp_reader *, const cpp_token *);
+static cpp_num eval_token (cpp_reader *, const cpp_token *, source_location);
static struct op *reduce (cpp_reader *, struct op *, enum cpp_ttype);
-static unsigned int interpret_float_suffix (const uchar *, size_t);
-static unsigned int interpret_int_suffix (const uchar *, size_t);
+static unsigned int interpret_float_suffix (cpp_reader *, const uchar *, size_t);
+static unsigned int interpret_int_suffix (cpp_reader *, const uchar *, size_t);
static void check_promotion (cpp_reader *, const struct op *);
/* Token type abuse to create unary plus and minus operators. */
#define SYNTAX_ERROR2(msgid, arg) \
do { cpp_error (pfile, CPP_DL_ERROR, msgid, arg); goto syntax_error; } \
while(0)
+#define SYNTAX_ERROR_AT(loc, msgid) \
+ do { cpp_error_with_line (pfile, CPP_DL_ERROR, (loc), 0, msgid); goto syntax_error; } \
+ while(0)
+#define SYNTAX_ERROR2_AT(loc, msgid, arg) \
+ do { cpp_error_with_line (pfile, CPP_DL_ERROR, (loc), 0, msgid, arg); goto syntax_error; } \
+ while(0)
/* Subroutine of cpp_classify_number. S points to a float suffix of
length LEN, possibly zero. Returns 0 for an invalid suffix, or a
flag vector describing the suffix. */
static unsigned int
-interpret_float_suffix (const uchar *s, size_t len)
+interpret_float_suffix (cpp_reader *pfile, const uchar *s, size_t len)
{
size_t flags;
size_t f, d, l, w, q, i;
}
}
- /* Recognize a fixed-point suffix. */
- switch (s[len-1])
- {
- case 'k': case 'K': flags = CPP_N_ACCUM; break;
- case 'r': case 'R': flags = CPP_N_FRACT; break;
- default: break;
- }
-
- /* Continue processing a fixed-point suffix. The suffix is case
- insensitive except for ll or LL. Order is significant. */
- if (flags)
+ if (CPP_OPTION (pfile, ext_numeric_literals))
{
- if (len == 1)
- return flags;
- len--;
+ /* Recognize a fixed-point suffix. */
+ if (len != 0)
+ switch (s[len-1])
+ {
+ case 'k': case 'K': flags = CPP_N_ACCUM; break;
+ case 'r': case 'R': flags = CPP_N_FRACT; break;
+ default: break;
+ }
- if (*s == 'u' || *s == 'U')
+ /* Continue processing a fixed-point suffix. The suffix is case
+ insensitive except for ll or LL. Order is significant. */
+ if (flags)
{
- flags |= CPP_N_UNSIGNED;
if (len == 1)
return flags;
len--;
- s++;
- }
- switch (*s)
- {
- case 'h': case 'H':
- if (len == 1)
- return flags |= CPP_N_SMALL;
- break;
- case 'l':
- if (len == 1)
- return flags |= CPP_N_MEDIUM;
- if (len == 2 && s[1] == 'l')
- return flags |= CPP_N_LARGE;
- break;
- case 'L':
- if (len == 1)
- return flags |= CPP_N_MEDIUM;
- if (len == 2 && s[1] == 'L')
- return flags |= CPP_N_LARGE;
- break;
- default:
- break;
- }
- /* Anything left at this point is invalid. */
- return 0;
+ if (*s == 'u' || *s == 'U')
+ {
+ flags |= CPP_N_UNSIGNED;
+ if (len == 1)
+ return flags;
+ len--;
+ s++;
+ }
+
+ switch (*s)
+ {
+ case 'h': case 'H':
+ if (len == 1)
+ return flags |= CPP_N_SMALL;
+ break;
+ case 'l':
+ if (len == 1)
+ return flags |= CPP_N_MEDIUM;
+ if (len == 2 && s[1] == 'l')
+ return flags |= CPP_N_LARGE;
+ break;
+ case 'L':
+ if (len == 1)
+ return flags |= CPP_N_MEDIUM;
+ if (len == 2 && s[1] == 'L')
+ return flags |= CPP_N_LARGE;
+ break;
+ default:
+ break;
+ }
+ /* Anything left at this point is invalid. */
+ return 0;
+ }
}
/* In any remaining valid suffix, the case and order don't matter. */
if (f + d + l + w + q > 1 || i > 1)
return 0;
+ if (i && !CPP_OPTION (pfile, ext_numeric_literals))
+ return 0;
+
+ if ((w || q) && !CPP_OPTION (pfile, ext_numeric_literals))
+ return 0;
+
return ((i ? CPP_N_IMAGINARY : 0)
| (f ? CPP_N_SMALL :
d ? CPP_N_MEDIUM :
/* Return the classification flags for a float suffix. */
unsigned int
-cpp_interpret_float_suffix (const char *s, size_t len)
+cpp_interpret_float_suffix (cpp_reader *pfile, const char *s, size_t len)
{
- return interpret_float_suffix ((const unsigned char *)s, len);
+ return interpret_float_suffix (pfile, (const unsigned char *)s, len);
}
/* Subroutine of cpp_classify_number. S points to an integer suffix
of length LEN, possibly zero. Returns 0 for an invalid suffix, or a
flag vector describing the suffix. */
static unsigned int
-interpret_int_suffix (const uchar *s, size_t len)
+interpret_int_suffix (cpp_reader *pfile, const uchar *s, size_t len)
{
size_t u, l, i;
if (l > 2 || u > 1 || i > 1)
return 0;
+ if (i && !CPP_OPTION (pfile, ext_numeric_literals))
+ return 0;
+
return ((i ? CPP_N_IMAGINARY : 0)
| (u ? CPP_N_UNSIGNED : 0)
| ((l == 0) ? CPP_N_SMALL
/* Return the classification flags for an int suffix. */
unsigned int
-cpp_interpret_int_suffix (const char *s, size_t len)
+cpp_interpret_int_suffix (cpp_reader *pfile, const char *s, size_t len)
{
- return interpret_int_suffix ((const unsigned char *)s, len);
+ return interpret_int_suffix (pfile, (const unsigned char *)s, len);
}
/* Return the string type corresponding to the the input user-defined string
/* Categorize numeric constants according to their field (integer,
floating point, or invalid), radix (decimal, octal, hexadecimal),
- and type suffixes. In C++0X if UD_SUFFIX is non null it will be
- assigned any unrecognized suffix for a user-defined literal. */
+ and type suffixes.
+
+ TOKEN is the token that represents the numeric constant to
+ classify.
+
+ In C++0X if UD_SUFFIX is non null it will be assigned
+ any unrecognized suffix for a user-defined literal.
+
+ VIRTUAL_LOCATION is the virtual location for TOKEN. */
unsigned int
cpp_classify_number (cpp_reader *pfile, const cpp_token *token,
- const char **ud_suffix)
+ const char **ud_suffix, source_location virtual_location)
{
const uchar *str = token->val.str.text;
const uchar *limit;
unsigned int max_digit, result, radix;
enum {NOT_FLOAT = 0, AFTER_POINT, AFTER_EXPON} float_flag;
bool seen_digit;
+ bool seen_digit_sep;
if (ud_suffix)
*ud_suffix = NULL;
max_digit = 0;
radix = 10;
seen_digit = false;
+ seen_digit_sep = false;
/* First, interpret the radix. */
if (*str == '0')
str++;
/* Require at least one hex digit to classify it as hex. */
- if ((*str == 'x' || *str == 'X')
- && (str[1] == '.' || ISXDIGIT (str[1])))
+ if (*str == 'x' || *str == 'X')
{
- radix = 16;
- str++;
+ if (str[1] == '.' || ISXDIGIT (str[1]))
+ {
+ radix = 16;
+ str++;
+ }
+ else if (DIGIT_SEP (str[1]))
+ SYNTAX_ERROR_AT (virtual_location,
+ "digit separator after base indicator");
}
- else if ((*str == 'b' || *str == 'B') && (str[1] == '0' || str[1] == '1'))
+ else if (*str == 'b' || *str == 'B')
{
- radix = 2;
- str++;
+ if (str[1] == '0' || str[1] == '1')
+ {
+ radix = 2;
+ str++;
+ }
+ else if (DIGIT_SEP (str[1]))
+ SYNTAX_ERROR_AT (virtual_location,
+ "digit separator after base indicator");
}
}
if (ISDIGIT (c) || (ISXDIGIT (c) && radix == 16))
{
+ seen_digit_sep = false;
seen_digit = true;
c = hex_value (c);
if (c > max_digit)
max_digit = c;
}
+ else if (DIGIT_SEP (c))
+ {
+ if (seen_digit_sep)
+ SYNTAX_ERROR_AT (virtual_location, "adjacent digit separators");
+ seen_digit_sep = true;
+ }
else if (c == '.')
{
+ if (seen_digit_sep || DIGIT_SEP (*str))
+ SYNTAX_ERROR_AT (virtual_location,
+ "digit separator adjacent to decimal point");
+ seen_digit_sep = false;
if (float_flag == NOT_FLOAT)
float_flag = AFTER_POINT;
else
- SYNTAX_ERROR ("too many decimal points in number");
+ SYNTAX_ERROR_AT (virtual_location,
+ "too many decimal points in number");
}
else if ((radix <= 10 && (c == 'e' || c == 'E'))
|| (radix == 16 && (c == 'p' || c == 'P')))
{
+ if (seen_digit_sep || DIGIT_SEP (*str))
+ SYNTAX_ERROR_AT (virtual_location,
+ "digit separator adjacent to exponent");
float_flag = AFTER_EXPON;
break;
}
}
}
+ if (seen_digit_sep && float_flag != AFTER_EXPON)
+ SYNTAX_ERROR_AT (virtual_location,
+ "digit separator outside digit sequence");
+
/* The suffix may be for decimal fixed-point constants without exponent. */
if (radix != 16 && float_flag == NOT_FLOAT)
{
- result = interpret_float_suffix (str, limit - str);
+ result = interpret_float_suffix (pfile, str, limit - str);
if ((result & CPP_N_FRACT) || (result & CPP_N_ACCUM))
{
result |= CPP_N_FLOATING;
radix = 10;
if (CPP_PEDANTIC (pfile))
- cpp_error (pfile, CPP_DL_PEDWARN,
- "fixed-point constants are a GCC extension");
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN, virtual_location, 0,
+ "fixed-point constants are a GCC extension");
goto syntax_ok;
}
else
if (max_digit >= radix)
{
if (radix == 2)
- SYNTAX_ERROR2 ("invalid digit \"%c\" in binary constant", '0' + max_digit);
+ SYNTAX_ERROR2_AT (virtual_location,
+ "invalid digit \"%c\" in binary constant", '0' + max_digit);
else
- SYNTAX_ERROR2 ("invalid digit \"%c\" in octal constant", '0' + max_digit);
+ SYNTAX_ERROR2_AT (virtual_location,
+ "invalid digit \"%c\" in octal constant", '0' + max_digit);
}
if (float_flag != NOT_FLOAT)
{
if (radix == 2)
{
- cpp_error (pfile, CPP_DL_ERROR,
- "invalid prefix \"0b\" for floating constant");
+ cpp_error_with_line (pfile, CPP_DL_ERROR, virtual_location, 0,
+ "invalid prefix \"0b\" for floating constant");
return CPP_N_INVALID;
}
if (radix == 16 && !seen_digit)
- SYNTAX_ERROR ("no digits in hexadecimal floating constant");
+ SYNTAX_ERROR_AT (virtual_location,
+ "no digits in hexadecimal floating constant");
if (radix == 16 && CPP_PEDANTIC (pfile) && !CPP_OPTION (pfile, c99))
- cpp_error (pfile, CPP_DL_PEDWARN,
- "use of C99 hexadecimal floating constant");
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN, virtual_location, 0,
+ "use of C99 hexadecimal floating constant");
if (float_flag == AFTER_EXPON)
{
/* Exponent is decimal, even if string is a hex float. */
if (!ISDIGIT (*str))
- SYNTAX_ERROR ("exponent has no digits");
-
+ {
+ if (DIGIT_SEP (*str))
+ SYNTAX_ERROR_AT (virtual_location,
+ "digit separator adjacent to exponent");
+ else
+ SYNTAX_ERROR_AT (virtual_location, "exponent has no digits");
+ }
do
- str++;
- while (ISDIGIT (*str));
+ {
+ seen_digit_sep = DIGIT_SEP (*str);
+ str++;
+ }
+ while (ISDIGIT (*str) || DIGIT_SEP (*str));
}
else if (radix == 16)
- SYNTAX_ERROR ("hexadecimal floating constants require an exponent");
+ SYNTAX_ERROR_AT (virtual_location,
+ "hexadecimal floating constants require an exponent");
- result = interpret_float_suffix (str, limit - str);
+ if (seen_digit_sep)
+ SYNTAX_ERROR_AT (virtual_location,
+ "digit separator outside digit sequence");
+
+ result = interpret_float_suffix (pfile, str, limit - str);
if (result == 0)
{
if (CPP_OPTION (pfile, user_literals))
}
else
{
- cpp_error (pfile, CPP_DL_ERROR,
- "invalid suffix \"%.*s\" on floating constant",
- (int) (limit - str), str);
+ cpp_error_with_line (pfile, CPP_DL_ERROR, virtual_location, 0,
+ "invalid suffix \"%.*s\" on floating constant",
+ (int) (limit - str), str);
return CPP_N_INVALID;
}
}
if (limit != str
&& CPP_WTRADITIONAL (pfile)
&& ! cpp_sys_macro_p (pfile))
- cpp_warning (pfile, CPP_W_TRADITIONAL,
- "traditional C rejects the \"%.*s\" suffix",
- (int) (limit - str), str);
+ cpp_warning_with_line (pfile, CPP_W_TRADITIONAL, virtual_location, 0,
+ "traditional C rejects the \"%.*s\" suffix",
+ (int) (limit - str), str);
/* A suffix for double is a GCC extension via decimal float support.
If the suffix also specifies an imaginary value we'll catch that
later. */
if ((result == CPP_N_MEDIUM) && CPP_PEDANTIC (pfile))
- cpp_error (pfile, CPP_DL_PEDWARN,
- "suffix for double constant is a GCC extension");
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN, virtual_location, 0,
+ "suffix for double constant is a GCC extension");
/* Radix must be 10 for decimal floats. */
if ((result & CPP_N_DFLOAT) && radix != 10)
{
- cpp_error (pfile, CPP_DL_ERROR,
- "invalid suffix \"%.*s\" with hexadecimal floating constant",
- (int) (limit - str), str);
+ cpp_error_with_line (pfile, CPP_DL_ERROR, virtual_location, 0,
+ "invalid suffix \"%.*s\" with hexadecimal floating constant",
+ (int) (limit - str), str);
return CPP_N_INVALID;
}
if ((result & (CPP_N_FRACT | CPP_N_ACCUM)) && CPP_PEDANTIC (pfile))
- cpp_error (pfile, CPP_DL_PEDWARN,
- "fixed-point constants are a GCC extension");
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN, virtual_location, 0,
+ "fixed-point constants are a GCC extension");
if ((result & CPP_N_DFLOAT) && CPP_PEDANTIC (pfile))
- cpp_error (pfile, CPP_DL_PEDWARN,
- "decimal float constants are a GCC extension");
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN, virtual_location, 0,
+ "decimal float constants are a GCC extension");
result |= CPP_N_FLOATING;
}
else
{
- result = interpret_int_suffix (str, limit - str);
+ result = interpret_int_suffix (pfile, str, limit - str);
if (result == 0)
{
if (CPP_OPTION (pfile, user_literals))
}
else
{
- cpp_error (pfile, CPP_DL_ERROR,
- "invalid suffix \"%.*s\" on integer constant",
- (int) (limit - str), str);
+ cpp_error_with_line (pfile, CPP_DL_ERROR, virtual_location, 0,
+ "invalid suffix \"%.*s\" on integer constant",
+ (int) (limit - str), str);
return CPP_N_INVALID;
}
}
&& CPP_OPTION (pfile, cpp_warn_long_long);
if (u_or_i || large)
- cpp_warning (pfile, large ? CPP_W_LONG_LONG : CPP_W_TRADITIONAL,
- "traditional C rejects the \"%.*s\" suffix",
- (int) (limit - str), str);
+ cpp_warning_with_line (pfile, large ? CPP_W_LONG_LONG : CPP_W_TRADITIONAL,
+ virtual_location, 0,
+ "traditional C rejects the \"%.*s\" suffix",
+ (int) (limit - str), str);
}
if ((result & CPP_N_WIDTH) == CPP_N_LARGE
&& CPP_OPTION (pfile, cpp_warn_long_long))
{
const char *message = CPP_OPTION (pfile, cplusplus)
- ? N_("use of C++0x long long integer constant")
+ ? N_("use of C++11 long long integer constant")
: N_("use of C99 long long integer constant");
if (CPP_OPTION (pfile, c99))
- cpp_warning (pfile, CPP_W_LONG_LONG, message);
+ cpp_warning_with_line (pfile, CPP_W_LONG_LONG, virtual_location,
+ 0, message);
else
- cpp_pedwarning (pfile, CPP_W_LONG_LONG, message);
+ cpp_pedwarning_with_line (pfile, CPP_W_LONG_LONG,
+ virtual_location, 0, message);
}
result |= CPP_N_INTEGER;
syntax_ok:
if ((result & CPP_N_IMAGINARY) && CPP_PEDANTIC (pfile))
- cpp_error (pfile, CPP_DL_PEDWARN,
- "imaginary constants are a GCC extension");
- if (radix == 2 && CPP_PEDANTIC (pfile))
- cpp_error (pfile, CPP_DL_PEDWARN,
- "binary constants are a GCC extension");
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN, virtual_location, 0,
+ "imaginary constants are a GCC extension");
+ if (radix == 2
+ && !CPP_OPTION (pfile, binary_constants)
+ && CPP_PEDANTIC (pfile))
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN, virtual_location, 0,
+ CPP_OPTION (pfile, cplusplus)
+ ? "binary constants are a C++1y feature "
+ "or GCC extension"
+ : "binary constants are a GCC extension");
if (radix == 10)
result |= CPP_N_DECIMAL;
if (ISDIGIT (c) || (base == 16 && ISXDIGIT (c)))
c = hex_value (c);
+ else if (DIGIT_SEP (c))
+ continue;
else
break;
number or character constant, or the result of the "defined" or "#"
operators). */
static cpp_num
-eval_token (cpp_reader *pfile, const cpp_token *token)
+eval_token (cpp_reader *pfile, const cpp_token *token,
+ source_location virtual_location)
{
cpp_num result;
unsigned int temp;
switch (token->type)
{
case CPP_NUMBER:
- temp = cpp_classify_number (pfile, token, NULL);
+ temp = cpp_classify_number (pfile, token, NULL, virtual_location);
if (temp & CPP_N_USERDEF)
cpp_error (pfile, CPP_DL_ERROR,
"user-defined literal in preprocessor expression");
switch (temp & CPP_N_CATEGORY)
{
case CPP_N_FLOATING:
- cpp_error (pfile, CPP_DL_ERROR,
- "floating constant in preprocessor expression");
+ cpp_error_with_line (pfile, CPP_DL_ERROR, virtual_location, 0,
+ "floating constant in preprocessor expression");
break;
case CPP_N_INTEGER:
if (!(temp & CPP_N_IMAGINARY))
return cpp_interpret_integer (pfile, token, temp);
- cpp_error (pfile, CPP_DL_ERROR,
- "imaginary number in preprocessor expression");
+ cpp_error_with_line (pfile, CPP_DL_ERROR, virtual_location, 0,
+ "imaginary number in preprocessor expression");
break;
case CPP_N_INVALID:
result.high = 0;
result.low = 0;
if (CPP_OPTION (pfile, warn_undef) && !pfile->state.skip_eval)
- cpp_warning (pfile, CPP_W_UNDEF, "\"%s\" is not defined",
- NODE_NAME (token->val.node.node));
+ cpp_warning_with_line (pfile, CPP_W_UNDEF, virtual_location, 0,
+ "\"%s\" is not defined",
+ NODE_NAME (token->val.node.node));
}
break;
/* A pedantic warning takes precedence over a deprecated
warning here. */
if (CPP_PEDANTIC (pfile))
- cpp_error (pfile, CPP_DL_PEDWARN,
- "assertions are a GCC extension");
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN,
+ virtual_location, 0,
+ "assertions are a GCC extension");
else if (CPP_OPTION (pfile, cpp_warn_deprecated))
- cpp_warning (pfile, CPP_W_DEPRECATED,
- "assertions are a deprecated extension");
+ cpp_warning_with_line (pfile, CPP_W_DEPRECATED, virtual_location, 0,
+ "assertions are a deprecated extension");
}
_cpp_test_assertion (pfile, &temp);
result.high = 0;
struct op *top = pfile->op_stack;
unsigned int lex_count;
bool saw_leading_not, want_value = true;
+ source_location virtual_location = 0;
pfile->state.skip_eval = 0;
struct op op;
lex_count++;
- op.token = cpp_get_token (pfile);
+ op.token = cpp_get_token_with_location (pfile, &virtual_location);
op.op = op.token->type;
- op.loc = op.token->src_loc;
+ op.loc = virtual_location;
switch (op.op)
{
case CPP_NAME:
case CPP_HASH:
if (!want_value)
- SYNTAX_ERROR2 ("missing binary operator before token \"%s\"",
- cpp_token_as_text (pfile, op.token));
+ SYNTAX_ERROR2_AT (op.loc,
+ "missing binary operator before token \"%s\"",
+ cpp_token_as_text (pfile, op.token));
want_value = false;
- top->value = eval_token (pfile, op.token);
+ top->value = eval_token (pfile, op.token, op.loc);
continue;
case CPP_NOT:
default:
if ((int) op.op <= (int) CPP_EQ || (int) op.op >= (int) CPP_PLUS_EQ)
- SYNTAX_ERROR2 ("token \"%s\" is not valid in preprocessor expressions",
- cpp_token_as_text (pfile, op.token));
+ SYNTAX_ERROR2_AT (op.loc,
+ "token \"%s\" is not valid in preprocessor expressions",
+ cpp_token_as_text (pfile, op.token));
break;
}
if (optab[op.op].flags & NO_L_OPERAND)
{
if (!want_value)
- SYNTAX_ERROR2 ("missing binary operator before token \"%s\"",
- cpp_token_as_text (pfile, op.token));
+ SYNTAX_ERROR2_AT (op.loc,
+ "missing binary operator before token \"%s\"",
+ cpp_token_as_text (pfile, op.token));
}
else if (want_value)
{
/* We want a number (or expression) and haven't got one.
Try to emit a specific diagnostic. */
if (op.op == CPP_CLOSE_PAREN && top->op == CPP_OPEN_PAREN)
- SYNTAX_ERROR ("missing expression between '(' and ')'");
+ SYNTAX_ERROR_AT (op.loc,
+ "missing expression between '(' and ')'");
if (op.op == CPP_EOF && top->op == CPP_EOF)
- SYNTAX_ERROR2 ("%s with no expression", is_if ? "#if" : "#elif");
+ SYNTAX_ERROR2_AT (op.loc,
+ "%s with no expression", is_if ? "#if" : "#elif");
if (top->op != CPP_EOF && top->op != CPP_OPEN_PAREN)
- SYNTAX_ERROR2 ("operator '%s' has no right operand",
- cpp_token_as_text (pfile, top->token));
+ SYNTAX_ERROR2_AT (op.loc,
+ "operator '%s' has no right operand",
+ cpp_token_as_text (pfile, top->token));
else if (op.op == CPP_CLOSE_PAREN || op.op == CPP_EOF)
/* Complain about missing paren during reduction. */;
else
- SYNTAX_ERROR2 ("operator '%s' has no left operand",
- cpp_token_as_text (pfile, op.token));
+ SYNTAX_ERROR2_AT (op.loc,
+ "operator '%s' has no left operand",
+ cpp_token_as_text (pfile, op.token));
}
top = reduce (pfile, top, op.op);
break;
case CPP_COLON:
if (top->op != CPP_QUERY)
- SYNTAX_ERROR (" ':' without preceding '?'");
+ SYNTAX_ERROR_AT (op.loc,
+ " ':' without preceding '?'");
if (!num_zerop (top[-1].value)) /* Was '?' condition true? */
pfile->state.skip_eval++;
else
top->op = op.op;
top->token = op.token;
- top->loc = op.token->src_loc;
+ top->loc = op.loc;
}
/* The controlling macro expression is only valid if we called lex 3
if (top != pfile->op_stack)
{
- cpp_error (pfile, CPP_DL_ICE, "unbalanced stack in %s",
- is_if ? "#if" : "#elif");
+ cpp_error_with_line (pfile, CPP_DL_ICE, top->loc, 0,
+ "unbalanced stack in %s",
+ is_if ? "#if" : "#elif");
syntax_error:
return false; /* Return false on syntax error. */
}
/* Arithmetic. */
case CPP_MINUS:
- rhs = num_negate (rhs, precision);
+ result.low = lhs.low - rhs.low;
+ result.high = lhs.high - rhs.high;
+ if (result.low > lhs.low)
+ result.high--;
+ result.unsignedp = lhs.unsignedp || rhs.unsignedp;
+ result.overflow = false;
+
+ result = num_trim (result, precision);
+ if (!result.unsignedp)
+ {
+ bool lhsp = num_positive (lhs, precision);
+ result.overflow = (lhsp != num_positive (rhs, precision)
+ && lhsp != num_positive (result, precision));
+ }
+ return result;
+
case CPP_PLUS:
result.low = lhs.low + rhs.low;
result.high = lhs.high + rhs.high;
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