deps: V8: cherry-pick e1eac1b16c96

Milad Farazmand · BridgeAR · commit 1a82b78bdacc · 2020-04-28T13:15:05.000+02:00
Original commit message: Fix compilation error with devtoolset-8 We are compiling V8 using devtoolset-8 and it is generating a new compilation error related to String Truncation: error: ‘char* strncpy(char*, const char*, size_t)’ output truncated copying between 1 and 15 bytes from a string of length 15 [-Werror=stringop-truncation] strncpy(buffer, unicode_utf8, i); Which basically means the null terminating character was not added to the end of the buffer: https://developers.redhat.com/blog/2018/05/24/detecting-string-truncation-with-gcc-8/ This CL will changes 2 uses of "strncpy" to "memcpy" as strings are being copied partially and `\n` being added at a later stage. Change-Id: I3656afb00463d70ddb8700a487a1978b793e1d09 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2155038 Reviewed-by: Andreas Haas <ahaas@chromium.org> Reviewed-by: Toon Verwaest <verwaest@chromium.org> Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com> Cr-Commit-Position: refs/heads/master@{#67277} Refs: v8/v8@e1eac1b PR-URL: #32974 Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ujjwal Sharma <ryzokuken@disroot.org>
diff --git a/deps/v8/test/cctest/parsing/test-scanner-streams.cc b/deps/v8/test/cctest/parsing/test-scanner-streams.cc
@@ -331,8 +331,8 @@ TEST(Utf8AdvanceUntilOverChunkBoundaries) {
   for (size_t i = 1; i < len; i++) {
     // Copy source string into buffer, splitting it at i.
     // Then add three chunks, 0..i-1, i..strlen-1, empty.
-    strncpy(buffer, unicode_utf8, i);
-    strncpy(buffer + i + 1, unicode_utf8 + i, len - i);
+    memcpy(buffer, unicode_utf8, i);
+    memcpy(buffer + i + 1, unicode_utf8 + i, len - i);
     buffer[i] = '\0';
     buffer[len + 1] = '\n';
     buffer[len + 2] = '\0';
@@ -360,8 +360,8 @@ TEST(Utf8ChunkBoundaries) {
   for (size_t i = 1; i < len; i++) {
     // Copy source string into buffer, splitting it at i.
     // Then add three chunks, 0..i-1, i..strlen-1, empty.
-    strncpy(buffer, unicode_utf8, i);
-    strncpy(buffer + i + 1, unicode_utf8 + i, len - i);
+    memcpy(buffer, unicode_utf8, i);
+    memcpy(buffer + i + 1, unicode_utf8 + i, len - i);
     buffer[i] = '\0';
     buffer[len + 1] = '\0';
     buffer[len + 2] = '\0';
