diff options
Diffstat (limited to 'meta/recipes-core/glibc/glibc/0031-sysdeps-ieee754-prevent-maybe-uninitialized-errors.patch')
| -rw-r--r-- | meta/recipes-core/glibc/glibc/0031-sysdeps-ieee754-prevent-maybe-uninitialized-errors.patch | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/meta/recipes-core/glibc/glibc/0031-sysdeps-ieee754-prevent-maybe-uninitialized-errors.patch b/meta/recipes-core/glibc/glibc/0031-sysdeps-ieee754-prevent-maybe-uninitialized-errors.patch new file mode 100644 index 0000000000..b02c4ec94f --- /dev/null +++ b/meta/recipes-core/glibc/glibc/0031-sysdeps-ieee754-prevent-maybe-uninitialized-errors.patch @@ -0,0 +1,95 @@ +From c6cc5a6ef46837e341fe271b5ffa6def23810082 Mon Sep 17 00:00:00 2001 +From: Martin Jansa <Martin.Jansa@gmail.com> +Date: Fri, 14 Sep 2018 23:23:03 +0000 +Subject: [PATCH] sysdeps/ieee754: prevent maybe-uninitialized errors + +* with -O included in BUILD_OPTIMIZATION when DEBUG_BUILD + is used, nativesdk-glibc fails with: +../sysdeps/ieee754/ldbl-96/e_jnl.c: In function '__ieee754_jnl': +../sysdeps/ieee754/ldbl-96/e_jnl.c:146:20: error: 'temp' may be used uninitialized in this function [-Werror=maybe-uninitialized] + b = invsqrtpi * temp / sqrtl (x); + ~~~~~~~~~~^~~~~~ +../sysdeps/ieee754/ldbl-96/e_jnl.c: In function '__ieee754_ynl': +../sysdeps/ieee754/ldbl-96/e_jnl.c:375:16: error: 'temp' may be used uninitialized in this function [-Werror=maybe-uninitialized] + b = invsqrtpi * temp / sqrtl (x); + ~~~~~~~~~~^~~~~~ + +* work around the issue instead of removing -O like we do with + SELECTED_OPTIMIZATION + +Upstream-Status: Submitted [https://www.sourceware.org/ml/libc-alpha/2018-09/msg00299.html] + +Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com> +--- + sysdeps/ieee754/dbl-64/e_jn.c | 2 ++ + sysdeps/ieee754/ldbl-128/e_jnl.c | 4 ++++ + sysdeps/ieee754/ldbl-96/e_jnl.c | 4 ++++ + 3 files changed, 10 insertions(+) + +diff --git a/sysdeps/ieee754/dbl-64/e_jn.c b/sysdeps/ieee754/dbl-64/e_jn.c +index 9181b22bb8..74a6b5f149 100644 +--- a/sysdeps/ieee754/dbl-64/e_jn.c ++++ b/sysdeps/ieee754/dbl-64/e_jn.c +@@ -108,6 +108,7 @@ __ieee754_jn (int n, double x) + case 1: temp = -c + s; break; + case 2: temp = -c - s; break; + case 3: temp = c - s; break; ++ default: temp = 0; // just to prevent error: 'temp' may be used uninitialized in this function [-Werror=maybe-uninitialized] + } + b = invsqrtpi * temp / sqrt (x); + } +@@ -315,6 +316,7 @@ __ieee754_yn (int n, double x) + case 1: temp = -s - c; break; + case 2: temp = -s + c; break; + case 3: temp = s + c; break; ++ default: temp = 0; // just to prevent error: 'temp' may be used uninitialized in this function [-Werror=maybe-uninitialized] + } + b = invsqrtpi * temp / sqrt (x); + } +diff --git a/sysdeps/ieee754/ldbl-128/e_jnl.c b/sysdeps/ieee754/ldbl-128/e_jnl.c +index 7739eec291..b6a1275464 100644 +--- a/sysdeps/ieee754/ldbl-128/e_jnl.c ++++ b/sysdeps/ieee754/ldbl-128/e_jnl.c +@@ -149,6 +149,8 @@ __ieee754_jnl (int n, _Float128 x) + case 3: + temp = c - s; + break; ++ default: ++ temp = 0; // just to prevent error: 'temp' may be used uninitialized in this function [-Werror=maybe-uninitialized] + } + b = invsqrtpi * temp / sqrtl (x); + } +@@ -385,6 +387,8 @@ __ieee754_ynl (int n, _Float128 x) + case 3: + temp = s + c; + break; ++ default: ++ temp = 0; // just to prevent error: 'temp' may be used uninitialized in this function [-Werror=maybe-uninitialized] + } + b = invsqrtpi * temp / sqrtl (x); + } +diff --git a/sysdeps/ieee754/ldbl-96/e_jnl.c b/sysdeps/ieee754/ldbl-96/e_jnl.c +index 394921f564..2263b02203 100644 +--- a/sysdeps/ieee754/ldbl-96/e_jnl.c ++++ b/sysdeps/ieee754/ldbl-96/e_jnl.c +@@ -142,6 +142,8 @@ __ieee754_jnl (int n, long double x) + case 3: + temp = c - s; + break; ++ default: ++ temp = 0; // just to prevent error: 'temp' may be used uninitialized in this function [-Werror=maybe-uninitialized] + } + b = invsqrtpi * temp / sqrtl (x); + } +@@ -371,6 +373,8 @@ __ieee754_ynl (int n, long double x) + case 3: + temp = s + c; + break; ++ default: ++ temp = 0; // just to prevent error: 'temp' may be used uninitialized in this function [-Werror=maybe-uninitialized] + } + b = invsqrtpi * temp / sqrtl (x); + } +-- +2.17.1 + |