diff options
Diffstat (limited to 'patches/mpfr/3.1.2/130-clang-divby0.patch')
| -rw-r--r-- | patches/mpfr/3.1.2/130-clang-divby0.patch | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/patches/mpfr/3.1.2/130-clang-divby0.patch b/patches/mpfr/3.1.2/130-clang-divby0.patch new file mode 100644 index 00000000..8e0cd8e0 --- /dev/null +++ b/patches/mpfr/3.1.2/130-clang-divby0.patch @@ -0,0 +1,129 @@ +diff -Naurd mpfr-3.1.2-a/PATCHES mpfr-3.1.2-b/PATCHES +--- mpfr-3.1.2-a/PATCHES 2013-10-09 13:34:21.000000000 +0000 ++++ mpfr-3.1.2-b/PATCHES 2013-10-09 13:34:21.000000000 +0000 +@@ -0,0 +1 @@ ++clang-divby0 +diff -Naurd mpfr-3.1.2-a/VERSION mpfr-3.1.2-b/VERSION +--- mpfr-3.1.2-a/VERSION 2013-09-26 10:52:52.000000000 +0000 ++++ mpfr-3.1.2-b/VERSION 2013-10-09 13:34:21.000000000 +0000 +@@ -1 +1 @@ +-3.1.2-p2 ++3.1.2-p3 +diff -Naurd mpfr-3.1.2-a/src/mpfr-impl.h mpfr-3.1.2-b/src/mpfr-impl.h +--- mpfr-3.1.2-a/src/mpfr-impl.h 2013-03-13 15:37:36.000000000 +0000 ++++ mpfr-3.1.2-b/src/mpfr-impl.h 2013-10-09 13:34:21.000000000 +0000 +@@ -468,8 +468,16 @@ + #define MPFR_LIMBS_PER_FLT ((IEEE_FLT_MANT_DIG-1)/GMP_NUMB_BITS+1) + + /* Visual C++ doesn't support +1.0/0.0, -1.0/0.0 and 0.0/0.0 +- at compile time. */ +-#if defined(_MSC_VER) && defined(_WIN32) && (_MSC_VER >= 1200) ++ at compile time. ++ Clang with -fsanitize=undefined is a bit similar due to a bug: ++ http://llvm.org/bugs/show_bug.cgi?id=17381 ++ but even without its sanitizer, it may be better to use the ++ double_zero version until IEEE 754 division by zero is properly ++ supported: ++ http://llvm.org/bugs/show_bug.cgi?id=17000 ++*/ ++#if (defined(_MSC_VER) && defined(_WIN32) && (_MSC_VER >= 1200)) || \ ++ defined(__clang__) + static double double_zero = 0.0; + # define DBL_NAN (double_zero/double_zero) + # define DBL_POS_INF ((double) 1.0/double_zero) +@@ -501,6 +509,8 @@ + (with Xcode 2.4.1, i.e. the latest one). */ + #define LVALUE(x) (&(x) == &(x) || &(x) != &(x)) + #define DOUBLE_ISINF(x) (LVALUE(x) && ((x) > DBL_MAX || (x) < -DBL_MAX)) ++/* The DOUBLE_ISNAN(x) macro is also valid on long double x ++ (assuming that the compiler isn't too broken). */ + #ifdef MPFR_NANISNAN + /* Avoid MIPSpro / IRIX64 / gcc -ffast-math (incorrect) optimizations. + The + must not be replaced by a ||. With gcc -ffast-math, NaN is +diff -Naurd mpfr-3.1.2-a/src/mpfr.h mpfr-3.1.2-b/src/mpfr.h +--- mpfr-3.1.2-a/src/mpfr.h 2013-09-26 10:52:52.000000000 +0000 ++++ mpfr-3.1.2-b/src/mpfr.h 2013-10-09 13:34:21.000000000 +0000 +@@ -27,7 +27,7 @@ + #define MPFR_VERSION_MAJOR 3 + #define MPFR_VERSION_MINOR 1 + #define MPFR_VERSION_PATCHLEVEL 2 +-#define MPFR_VERSION_STRING "3.1.2-p2" ++#define MPFR_VERSION_STRING "3.1.2-p3" + + /* Macros dealing with MPFR VERSION */ + #define MPFR_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c)) +diff -Naurd mpfr-3.1.2-a/src/version.c mpfr-3.1.2-b/src/version.c +--- mpfr-3.1.2-a/src/version.c 2013-09-26 10:52:52.000000000 +0000 ++++ mpfr-3.1.2-b/src/version.c 2013-10-09 13:34:21.000000000 +0000 +@@ -25,5 +25,5 @@ + const char * + mpfr_get_version (void) + { +- return "3.1.2-p2"; ++ return "3.1.2-p3"; + } +diff -Naurd mpfr-3.1.2-a/tests/tget_flt.c mpfr-3.1.2-b/tests/tget_flt.c +--- mpfr-3.1.2-a/tests/tget_flt.c 2013-03-13 15:37:44.000000000 +0000 ++++ mpfr-3.1.2-b/tests/tget_flt.c 2013-10-09 13:34:21.000000000 +0000 +@@ -28,9 +28,17 @@ + main (void) + { + mpfr_t x, y; +- float f, g, infp; ++ float f, g; + int i; ++#if !defined(MPFR_ERRDIVZERO) ++ float infp; ++#endif ++ ++ tests_start_mpfr (); + ++#if !defined(MPFR_ERRDIVZERO) ++ /* The definition of DBL_POS_INF involves a division by 0. This makes ++ "clang -O2 -fsanitize=undefined -fno-sanitize-recover" fail. */ + infp = (float) DBL_POS_INF; + if (infp * 0.5 != infp) + { +@@ -38,8 +46,7 @@ + fprintf (stderr, "(this is probably a compiler bug, please report)\n"); + exit (1); + } +- +- tests_start_mpfr (); ++#endif + + mpfr_init2 (x, 24); + mpfr_init2 (y, 24); +@@ -353,6 +360,7 @@ + printf ("expected %.8e, got %.8e\n", g, f); + exit (1); + } ++#if !defined(MPFR_ERRDIVZERO) + f = mpfr_get_flt (x, MPFR_RNDN); /* first round to 2^128 (even rule), + thus we should get +Inf */ + g = infp; +@@ -376,6 +384,7 @@ + printf ("expected %.8e, got %.8e\n", g, f); + exit (1); + } ++#endif + + mpfr_clear (x); + mpfr_clear (y); +diff -Naurd mpfr-3.1.2-a/tests/tset_ld.c mpfr-3.1.2-b/tests/tset_ld.c +--- mpfr-3.1.2-a/tests/tset_ld.c 2013-03-13 15:37:44.000000000 +0000 ++++ mpfr-3.1.2-b/tests/tset_ld.c 2013-10-09 13:34:21.000000000 +0000 +@@ -47,8 +47,11 @@ + static int + Isnan_ld (long double d) + { +- double e = (double) d; +- if (DOUBLE_ISNAN (e)) ++ /* Do not convert d to double as this can give an overflow, which ++ may confuse compilers without IEEE 754 support (such as clang ++ -fsanitize=undefined), or trigger a trap if enabled. ++ The DOUBLE_ISNAN macro should work fine on long double. */ ++ if (DOUBLE_ISNAN (d)) + return 1; + LONGDOUBLE_NAN_ACTION (d, goto yes); + return 0; |