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authorGravatar Abseil Team <absl-team@google.com>2019-02-07 14:13:06 -0800
committerGravatar Shaindel Schwartz <shaindel@google.com>2019-02-07 17:48:22 -0500
commit2901ec32a919311384d6ad4194e2d927c06831f7 (patch)
treeeedb15fc3c7510d7580e4a6136bbf18734edfd8a /absl/strings/internal
parentd78310fe5a82f2e0e6e16509ef8079c8d7e4674e (diff)
Export of internal Abseil changes.
-- 5da9755667df37e38ccaf6938c9f408e294110bb by Shaindel Schwartz <shaindel@google.com>: Import of CCTZ from GitHub. PiperOrigin-RevId: 232942734 -- b6fb275769c66fdd2bd92b119198c59e9a7dd737 by Samuel Benzaquen <sbenza@google.com>: Fix integral underflow when from-arg width is INT_MIN. PiperOrigin-RevId: 232888037 -- 4135dbba4a26c4642277fc2a7e2a833d593daa1c by Abseil Team <absl-team@google.com>: Add the insert_return_type alias to raw_hash_set. PiperOrigin-RevId: 232683892 -- 0b120b7d3693800bbb886f6fc607ae54a9338cb1 by Abseil Team <absl-team@google.com>: Macros to detect and disabled SafeStack https://clang.llvm.org/docs/SafeStack.html PiperOrigin-RevId: 232680114 -- a77b3fb533a9e37966d1d6ef5ccd09c73fff2ca1 by Abseil Team <absl-team@google.com>: Avoid potential red zone clobber Pushing on the stack on x86-64 may clobber local variables held below %rsp in the red zone. Avoid this by using lea on x86-64. PiperOrigin-RevId: 232592478 -- bf326a0eefa92f4e704287563df0c5a5b1873b6d by Eric Fiselier <ericwf@google.com>: Add additional tests for AbslHashValue. PiperOrigin-RevId: 232344325 -- 816e4f98fd7632c944c779db87b7dac4e138afcf by Eric Fiselier <ericwf@google.com>: Avoid upcoming GCC 9.0 warnings about base class init. Currently, in trunk, GCC has a new warning under -Wextra that diagnoses when a derived class fails to explicitly initialize the base class in a constructor initializer list. This patch avoids this warning. PiperOrigin-RevId: 232327626 -- 779c0f44b3c2b7a04d4bdf978641eb8180515bf6 by Eric Fiselier <ericwf@google.com>: Guard against C++2a char8_t change. PiperOrigin-RevId: 232326178 -- 41e5395b85bbbfb5bf418cc21b04ad4ccb15a284 by Eric Fiselier <ericwf@google.com>: Avoid Clang Warning PiperOrigin-RevId: 232138866 GitOrigin-RevId: 5da9755667df37e38ccaf6938c9f408e294110bb Change-Id: I49ee4f58db177b81b039d7d949f671c97c5a7933
Diffstat (limited to 'absl/strings/internal')
-rw-r--r--absl/strings/internal/str_format/bind.cc3
-rw-r--r--absl/strings/internal/str_format/bind_test.cc15
-rw-r--r--absl/strings/internal/utf8_test.cc9
3 files changed, 26 insertions, 1 deletions
diff --git a/absl/strings/internal/str_format/bind.cc b/absl/strings/internal/str_format/bind.cc
index 758adb7a..a89295d5 100644
--- a/absl/strings/internal/str_format/bind.cc
+++ b/absl/strings/internal/str_format/bind.cc
@@ -53,7 +53,8 @@ inline bool ArgContext::Bind(const UnboundConversion* unbound,
// "A negative field width is taken as a '-' flag followed by a
// positive field width."
force_left = true;
- width = -width;
+ // Make sure we don't overflow the width when negating it.
+ width = -std::max(width, -std::numeric_limits<int>::max());
}
}
diff --git a/absl/strings/internal/str_format/bind_test.cc b/absl/strings/internal/str_format/bind_test.cc
index 47575739..ba6470ec 100644
--- a/absl/strings/internal/str_format/bind_test.cc
+++ b/absl/strings/internal/str_format/bind_test.cc
@@ -1,6 +1,7 @@
#include "absl/strings/internal/str_format/bind.h"
#include <string.h>
+#include <limits>
#include "gtest/gtest.h"
@@ -91,6 +92,20 @@ TEST_F(FormatBindTest, BindSingle) {
}
}
+TEST_F(FormatBindTest, WidthUnderflowRegression) {
+ UnboundConversion props;
+ BoundConversion bound;
+ int next = 0;
+ const int args_i[] = {std::numeric_limits<int>::min(), 17};
+ const FormatArgImpl args[] = {FormatArgImpl(args_i[0]),
+ FormatArgImpl(args_i[1])};
+ ASSERT_TRUE(Extract("*d", &props, &next));
+ ASSERT_TRUE(BindWithPack(&props, args, &bound));
+
+ EXPECT_EQ(bound.width(), std::numeric_limits<int>::max());
+ EXPECT_EQ(bound.arg(), args + 1);
+}
+
TEST_F(FormatBindTest, FormatPack) {
struct Expectation {
int line;
diff --git a/absl/strings/internal/utf8_test.cc b/absl/strings/internal/utf8_test.cc
index 64cec70d..07a000cb 100644
--- a/absl/strings/internal/utf8_test.cc
+++ b/absl/strings/internal/utf8_test.cc
@@ -22,6 +22,11 @@
namespace {
+#if !defined(__cpp_char8_t)
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wc++2a-compat"
+#endif
TEST(EncodeUTF8Char, BasicFunction) {
std::pair<char32_t, std::string> tests[] = {{0x0030, u8"\u0030"},
{0x00A3, u8"\u00A3"},
@@ -53,5 +58,9 @@ TEST(EncodeUTF8Char, BasicFunction) {
EXPECT_LE(absl::strings_internal::EncodeUTF8Char(buf2, -1),
absl::strings_internal::kMaxEncodedUTF8Size);
}
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
+#endif // !defined(__cpp_char8_t)
} // namespace