minor: remove newline from output

Author: andrew-taylor

compile_time_python/compile.py

@@ -587,7 +587,6 @@ def add_tar_file(tar, pathname, contents):
 
 MAX_BYTES_LOG_SOURCE_FILE = 20480
 
-
 def run_compile_time_logger(process, explanation_labels, options):
     """
     run a script to log compiles
@@ -623,6 +622,8 @@ def run_compile_time_logger(process, explanation_labels, options):
     if options.debug:
         print(f"running {options.compile_logger}")
     try:
+        sys.stdout.flush()
+        sys.stderr.flush()
         subprocess.run([options.compile_logger])
     except OSError as e:
         if options.debug:

compile_time_python/explain_compiler_output.py

@@ -127,7 +127,7 @@ def explain_compiler_output(output, args):
     #
     # if we didn't explain any messages, just pass through all compiler output
     #
-    if not errors_explained:
+    if not errors_explained and lines:
         print("\n".join(lines), file=sys.stderr)
 
     return explanations
@@ -275,6 +275,8 @@ def run_compile_time_helper(message, args):
     if args.debug:
         print(f"running {args.compile_helper}")
     try:
+        sys.stdout.flush()
+        sys.stderr.flush()
         p = subprocess.run([args.compile_helper])
         return p.returncode == 0
     except OSError as e:

tests/expected_output/assign_function_to_int/000001-clang-14.0-x86_64-pc-linux-gnu.txt

@@ -0,0 +1,7 @@
+tests/extracted_compile_time_errors/assign_function_to_int.c:2:9: warning: incompatible pointer to integer conversion initializing 'int' with an expression of type 'int (int, char **)' [-Wint-conversion]
+    int a = main;
+        ^   ~~~~
+dcc explanation: you are attempting to assign main which is a function to an int variable.
+Perhaps you are trying to call the function and have forgotten the round brackets and any parameter values.
+
+  See more information here: https://comp1511unsw.github.io/dcc/assign_function_to_int.html

tests/expected_output/stack_use_after_return/000001-clang-14.0-x86_64-pc-linux-gnu.txt

@@ -0,0 +1,7 @@
+tests/extracted_compile_time_errors/stack_use_after_return.c:3:13: warning: address of stack memory associated with local variable 'i' returned [-Wreturn-stack-address]
+    return &i;
+            ^
+dcc explanation: you are trying to return a pointer to the local variable 'i'.
+You can not do this because i will not exist after the function returns.
+
+  See more information here: https://comp1511unsw.github.io/dcc/stack_use_after_return.html