/usr/src/gcc-5/debian/patches/pr39491.diff is in gcc-5-source 5.5.0-12ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | # DP: Proposed patch for PR libstdc++/39491.
2009-04-16 Benjamin Kosnik <bkoz@redhat.com>
* src/math_stubs_long_double.cc (__signbitl): Add for hppa linux only.
Index: a/src/libstdc++-v3/src/math_stubs_long_double.cc
===================================================================
--- a/src/libstdc++-v3/src/math_stubs_long_double.cc (revision 146216)
+++ b/src/libstdc++-v3/src/math_stubs_long_double.cc (working copy)
@@ -213,4 +221,111 @@
return tanh((double) x);
}
#endif
+
+ // From libmath/signbitl.c
+ // XXX ABI mistakenly exported
+#if defined (__hppa__) && defined (__linux__)
+# include <endian.h>
+# include <float.h>
+
+typedef unsigned int U_int32_t __attribute ((mode (SI)));
+typedef int Int32_t __attribute ((mode (SI)));
+typedef unsigned int U_int64_t __attribute ((mode (DI)));
+typedef int Int64_t __attribute ((mode (DI)));
+
+#if BYTE_ORDER == BIG_ENDIAN
+typedef union
+{
+ long double value;
+ struct
+ {
+ unsigned int sign_exponent:16;
+ unsigned int empty:16;
+ U_int32_t msw;
+ U_int32_t lsw;
+ } parts;
+} ieee_long_double_shape_type;
+#endif
+#if BYTE_ORDER == LITTLE_ENDIAN
+typedef union
+{
+ long double value;
+ struct
+ {
+ U_int32_t lsw;
+ U_int32_t msw;
+ unsigned int sign_exponent:16;
+ unsigned int empty:16;
+ } parts;
+} ieee_long_double_shape_type;
+#endif
+
+/* Get int from the exponent of a long double. */
+#define GET_LDOUBLE_EXP(exp,d) \
+do { \
+ ieee_long_double_shape_type ge_u; \
+ ge_u.value = (d); \
+ (exp) = ge_u.parts.sign_exponent; \
+} while (0)
+
+#if BYTE_ORDER == BIG_ENDIAN
+typedef union
+{
+ long double value;
+ struct
+ {
+ U_int64_t msw;
+ U_int64_t lsw;
+ } parts64;
+ struct
+ {
+ U_int32_t w0, w1, w2, w3;
+ } parts32;
+} ieee_quad_double_shape_type;
+#endif
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+typedef union
+{
+ long double value;
+ struct
+ {
+ U_int64_t lsw;
+ U_int64_t msw;
+ } parts64;
+ struct
+ {
+ U_int32_t w3, w2, w1, w0;
+ } parts32;
+} ieee_quad_double_shape_type;
+#endif
+
+/* Get most significant 64 bit int from a quad long double. */
+#define GET_LDOUBLE_MSW64(msw,d) \
+do { \
+ ieee_quad_double_shape_type qw_u; \
+ qw_u.value = (d); \
+ (msw) = qw_u.parts64.msw; \
+} while (0)
+
+int
+__signbitl (long double x)
+{
+#if LDBL_MANT_DIG == 113
+ Int64_t msw;
+
+ GET_LDOUBLE_MSW64 (msw, x);
+ return msw < 0;
+#else
+ Int32_t e;
+
+ GET_LDOUBLE_EXP (e, x);
+ return e & 0x8000;
+#endif
+}
+#endif
+
+#ifndef _GLIBCXX_HAVE___SIGNBITL
+
+#endif
} // extern "C"
--- a/src/libstdc++-v3/config/abi/pre/gnu.ver~ 2009-04-10 01:23:07.000000000 +0200
+++ b/src/libstdc++-v3/config/abi/pre/gnu.ver 2009-04-21 16:24:24.000000000 +0200
@@ -635,6 +635,7 @@
sqrtf;
sqrtl;
copysignf;
+ __signbitl;
# GLIBCXX_ABI compatibility only.
# std::string
|