diff options
Diffstat (limited to 'gnu/packages/patches')
| -rw-r--r-- | gnu/packages/patches/glibc-2.33-riscv64-miscompilation.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gnu/packages/patches/glibc-2.33-riscv64-miscompilation.patch b/gnu/packages/patches/glibc-2.33-riscv64-miscompilation.patch new file mode 100644 index 0000000000..bcf297be94 --- /dev/null +++ b/gnu/packages/patches/glibc-2.33-riscv64-miscompilation.patch @@ -0,0 +1,57 @@ +This patch is from upstream glibc after 2.33 and is needed in Guix to +fix glibc-2.33 compilation for riscv64-linux. + +From 044e603b698093cf48f6e6229e0b66acf05227e4 Mon Sep 17 00:00:00 2001 +From: Florian Weimer <fweimer@redhat.com> +Date: Fri, 19 Feb 2021 13:29:00 +0100 +Subject: [PATCH] string: Work around GCC PR 98512 in rawmemchr + +--- + string/rawmemchr.c | 26 +++++++++++++++----------- + 1 file changed, 15 insertions(+), 11 deletions(-) + +diff --git a/string/rawmemchr.c b/string/rawmemchr.c +index 59bbeeaa42..b8523118e5 100644 +--- a/string/rawmemchr.c ++++ b/string/rawmemchr.c +@@ -22,24 +22,28 @@ + # define RAWMEMCHR __rawmemchr + #endif + ++/* The pragmata should be nested inside RAWMEMCHR below, but that ++ triggers GCC PR 98512. */ ++DIAG_PUSH_NEEDS_COMMENT; ++#if __GNUC_PREREQ (7, 0) ++/* GCC 8 warns about the size passed to memchr being larger than ++ PTRDIFF_MAX; the use of SIZE_MAX is deliberate here. */ ++DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-overflow="); ++#endif ++#if __GNUC_PREREQ (11, 0) ++/* Likewise GCC 11, with a different warning option. */ ++DIAG_IGNORE_NEEDS_COMMENT (11, "-Wstringop-overread"); ++#endif ++ + /* Find the first occurrence of C in S. */ + void * + RAWMEMCHR (const void *s, int c) + { +- DIAG_PUSH_NEEDS_COMMENT; +-#if __GNUC_PREREQ (7, 0) +- /* GCC 8 warns about the size passed to memchr being larger than +- PTRDIFF_MAX; the use of SIZE_MAX is deliberate here. */ +- DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-overflow="); +-#endif +-#if __GNUC_PREREQ (11, 0) +- /* Likewise GCC 11, with a different warning option. */ +- DIAG_IGNORE_NEEDS_COMMENT (11, "-Wstringop-overread"); +-#endif + if (c != '\0') + return memchr (s, c, (size_t)-1); +- DIAG_POP_NEEDS_COMMENT; + return (char *)s + strlen (s); + } + libc_hidden_def (__rawmemchr) + weak_alias (__rawmemchr, rawmemchr) ++ ++DIAG_POP_NEEDS_COMMENT; +-- |