When attempting a build like so:

$ configure [....] --with-vendor-name="THL A29 Limited, a Tencent company" [...]

$ make images

It fails with:

gmake[2]: *** [make/Main.gmk:221: java.base-launchers] Error 2
gmake[2]: *** Waiting for unfinished jobs....
gmake[3]: Entering directory '/disk/openjdk/upstream-sources/openjdk-head/make'

Looking closer one notices this for SetupJdkExecutable BUILD_LAUNCHER_java:

SetupJdkExecutable BUILD_LAUNCHER_java
 [2] NAME := java
 [3] EXTRA_FILES := /disk/openjdk/upstream-sources/openjdk-head/src/java.base/share/native/launcher/main.c
 [4] OPTIMIZATION := HIGH
 [5] CFLAGS := -I/disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-server-release/support/modules_include/java.base -I/disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-server-release/support/modules_include/java.base/linux -I/disk/openjdk/upstream-sources/openjdk-head/src/java.base/share/native/libjava -I/disk/openjdk/upstream-sources/openjdk-head/src/java.base/unix/native/libjava -I/disk/openjdk/upstream-sources/openjdk-head/src/hotspot/share/include -I/disk/openjdk/upstream-sources/openjdk-head/src/hotspot/os/posix/include -pipe -fstack-protector -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DLINUX -DNDEBUG -fmacro-prefix-map=/disk/openjdk/upstream-sources/openjdk-head/= -std=c99 -fno-strict-aliasing -Wall -Wextra ...
 [6] a Tencent company"' -DVENDOR_URL='"https://openjdk.java.net/"' -DVENDOR_URL_BUG='"https://bugreport.java.com/bugreport/"' -DVENDOR_URL_VM_BUG='"https://bugreport.java.com/bugreport/crash.jsp"' -DLAUNCHER_NAME='"openjdk"' -DPROGNAME='"java"' -DEXPAND_CLASSPATH_WILDCARDS -DENABLE_ARG_FILES -DJAVA_ARGS='{ "-J-ms8m", }'
 [7] CFLAGS_solaris := -KPIC

Note that parameter '[6]' is bogus:
 [6] a Tencent company"' -DVENDOR_URL='"https://openjdk.java.net/"' -DVENDOR_URL_BUG='"https://bugreport.java.com/bugreport/"' -DVENDOR_URL_VM_BUG='"https://bugreport.java.com/bugreport/crash.jsp"' -DLAUNCHER_NAME='"openjdk"' -DPROGNAME='"java"' -DEXPAND_CLASSPATH_WILDCARDS -DENABLE_ARG_FILES -DJAVA_ARGS='{ "-J-ms8m", }'

The comma got expanded and interpreted as a parameter separator!