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c-common.c (combine_strings): Emit a pedantic warning when a string length is greater than the minimum ANSI C...

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* c-common.c (combine_strings): Emit a pedantic warning when a
	string length is greater than the minimum ANSI C is required
	to support.

From-SVN: r34999
This commit is contained in:
Kaveh R. Ghazi 2000-07-12 21:03:29 +00:00 committed by Kaveh Ghazi
parent 733dee92dc
commit 1326a48bac
2 changed files with 11 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2000-07-12 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* c-common.c (combine_strings): Emit a pedantic warning when a
string length is greater than the minimum ANSI C is required
to support.
Wed Jul 12 13:24:30 2000 Jeffrey A Law (law@cygnus.com) Wed Jul 12 13:24:30 2000 Jeffrey A Law (law@cygnus.com)
* pa/xm-pa64.h (NO_SYS_SIGLIST): Kill. * pa/xm-pa64.h (NO_SYS_SIGLIST): Kill.

5
gcc/c-common.c
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@ -294,6 +294,7 @@ combine_strings (strings)
int wide_flag = 0; int wide_flag = 0;
int wchar_bytes = TYPE_PRECISION (wchar_type_node) / BITS_PER_UNIT; int wchar_bytes = TYPE_PRECISION (wchar_type_node) / BITS_PER_UNIT;
int nchars; int nchars;
const int nchars_max = flag_isoc99 ? 4095 : 509;
if (TREE_CHAIN (strings)) if (TREE_CHAIN (strings))
{ {
@ -373,6 +374,10 @@ combine_strings (strings)
/* Compute the number of elements, for the array type. */ /* Compute the number of elements, for the array type. */
nchars = wide_flag ? length / wchar_bytes : length; nchars = wide_flag ? length / wchar_bytes : length;
if (pedantic && nchars > nchars_max)
pedwarn ("string length `%d' is greater than the minimum length `%d' ANSI C is required to support",
nchars, nchars_max);
/* Create the array type for the string constant. /* Create the array type for the string constant.
-Wwrite-strings says make the string constant an array of const char -Wwrite-strings says make the string constant an array of const char
so that copying it to a non-const pointer will get a warning. so that copying it to a non-const pointer will get a warning.