(fake_f_rep): Clear all of u, initially.

Make the ints in u unsigned.
(f_define): Use ordinary constants for long double
if it's same width as double.
Make __convert_long_double_i unsigned.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@3589 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/enquire.c b/gcc/enquire.c
index 808bb96..037dc1e 100644 (file)
--- a/gcc/enquire.c
+++ b/gcc/enquire.c
@@ -19,8 +19,14 @@
    Include sys/types.h before signal.h, Apr 92.
    Support NO_LONG_DOUBLE_IO in f_define and f_rep; new fn fake_f_rep, Apr 92.
    Enclose -f output in #ifndef _FLOAT_H___, Richard Stallman, May 92.
+
    Add #undef before every #define, Jim Wilson, Dec 92.
 
+   Changes by Paul Eggert, installed Feb 93:
+   (fake_f_rep): Clear all of u, initially.  Make the ints in u unsigned.
+   (f_define): Use ordinary constants for long double
+   if it's same width as double.  Make __convert_long_double_i unsigned.
+
    COMPILING
    With luck and a following wind, just the following will work:
        cc enquire.c -o enquire
@@ -828,12 +834,13 @@ Procedure f_define(desc, extra, sort, name, precision, val, mark)
        if (stdc) {
 #ifdef NO_LONG_DOUBLE_IO
                static int union_defined = 0;
-               if (!strcmp(sort, "LDBL")) {
+               if (sizeof(double) != sizeof(Long_double)
+                   && !strcmp(sort, "LDBL")) {
                        if (!union_defined) {
                                printf("#ifndef __LDBL_UNION__\n");
                                printf("#define __LDBL_UNION__\n");
                                printf("union __convert_long_double {\n");
-                               printf("  int __convert_long_double_i[4];\n");
+                               printf("  unsigned __convert_long_double_i[4];\n");
                                printf("  long double __convert_long_double_d;\n");
                                printf("};\n");
                                printf("#endif\n");
@@ -909,7 +916,8 @@ int exponent(x, fract, exp) Long_double x; double *fract; int *exp; {
 
 char *fake_f_rep(type, val) char *type; Long_double val; {
        static char buf[1024];
-       union { int i[4]; Long_double ld;} u;
+       union { unsigned int i[4]; Long_double ld;} u;
+       u.i[0] = u.i[1] = u.i[2] = u.i[3] = 0;
        u.ld = val;
        sprintf(buf, "(__extension__ ((union __convert_long_double) {0x%x, 0x%x, 0x%x, 0x%x}).__convert_long_double_d)",
                u.i[0], u.i[1], u.i[2], u.i[3]);