diff options
Diffstat (limited to 'poky/meta/recipes-devtools/gcc/gcc/0026-rust-recursion-limit.patch')
-rw-r--r-- | poky/meta/recipes-devtools/gcc/gcc/0026-rust-recursion-limit.patch | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/poky/meta/recipes-devtools/gcc/gcc/0026-rust-recursion-limit.patch b/poky/meta/recipes-devtools/gcc/gcc/0026-rust-recursion-limit.patch new file mode 100644 index 0000000000..bbe2f18f6f --- /dev/null +++ b/poky/meta/recipes-devtools/gcc/gcc/0026-rust-recursion-limit.patch @@ -0,0 +1,92 @@ +From 9234cdca6ee88badfc00297e72f13dac4e540c79 Mon Sep 17 00:00:00 2001 +From: Nick Clifton <nickc@redhat.com> +Date: Fri, 1 Jul 2022 15:58:52 +0100 +Subject: [PATCH] Add a recursion limit to the demangle_const function in the + Rust demangler. + +libiberty/ + PR demangler/105039 + * rust-demangle.c (demangle_const): Add recursion limit. + +Upstream-Status: Backport [https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=9234cdca6ee88badfc00297e72f13dac4e540c79] +--- + libiberty/rust-demangle.c | 29 ++++++++++++++++++++--------- + 1 file changed, 20 insertions(+), 9 deletions(-) + +diff --git a/libiberty/rust-demangle.c b/libiberty/rust-demangle.c +index bb58d900e27..36afcfae278 100644 +--- a/libiberty/rust-demangle.c ++++ b/libiberty/rust-demangle.c +@@ -126,7 +126,7 @@ parse_integer_62 (struct rust_demangler *rdm) + return 0; + + x = 0; +- while (!eat (rdm, '_')) ++ while (!eat (rdm, '_') && !rdm->errored) + { + c = next (rdm); + x *= 62; +@@ -1148,6 +1148,15 @@ demangle_const (struct rust_demangler *rdm) + if (rdm->errored) + return; + ++ if (rdm->recursion != RUST_NO_RECURSION_LIMIT) ++ { ++ ++ rdm->recursion; ++ if (rdm->recursion > RUST_MAX_RECURSION_COUNT) ++ /* FIXME: There ought to be a way to report ++ that the recursion limit has been reached. */ ++ goto fail_return; ++ } ++ + if (eat (rdm, 'B')) + { + backref = parse_integer_62 (rdm); +@@ -1158,7 +1167,7 @@ demangle_const (struct rust_demangler *rdm) + demangle_const (rdm); + rdm->next = old_next; + } +- return; ++ goto pass_return; + } + + ty_tag = next (rdm); +@@ -1167,7 +1176,7 @@ demangle_const (struct rust_demangler *rdm) + /* Placeholder. */ + case 'p': + PRINT ("_"); +- return; ++ goto pass_return; + + /* Unsigned integer types. */ + case 'h': +@@ -1200,18 +1209,20 @@ demangle_const (struct rust_demangler *rdm) + break; + + default: +- rdm->errored = 1; +- return; ++ goto fail_return; + } + +- if (rdm->errored) +- return; +- +- if (rdm->verbose) ++ if (!rdm->errored && rdm->verbose) + { + PRINT (": "); + PRINT (basic_type (ty_tag)); + } ++ ++ fail_return: ++ rdm->errored = 1; ++ pass_return: ++ if (rdm->recursion != RUST_NO_RECURSION_LIMIT) ++ -- rdm->recursion; + } + + static void +-- +2.31.1 + |