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Fix buffer overflow on particularly named files and clarify documentation about

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output file naming.

Patch by Tsunakawa, Takayuki <tsunakawa.takay@jp.fujitsu.com>
This commit is contained in:
Michael Meskes 2016-12-22 08:28:13 +01:00
parent 3272be3468
commit 1df8b3fe82
2 changed files with 5 additions and 6 deletions
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8
doc/src/sgml/ref/ecpg-ref.sgml
View File

@ -42,11 +42,9 @@ PostgreSQL documentation
<para>
<command>ecpg</command> will convert each input file given on the
command line to the corresponding C output file. Input files
preferably have the extension <filename>.pgc</filename>, in which
case the extension will be replaced by <filename>.c</filename> to
determine the output file name. If the extension of the input file
is not <filename>.pgc</filename>, then the output file name is
computed by appending <literal>.c</literal> to the full file name.
preferably have the extension <filename>.pgc</filename>.
The extension will be replaced by <filename>.c</filename> to
determine the output file name.
The output file name can also be overridden using the
<option>-o</option> option.
</para>

3
src/interfaces/ecpg/preproc/ecpg.c
View File

@ -309,7 +309,8 @@ main(int argc, char *const argv[])
base_yyout = stdout;
else
{
output_filename = strdup(input_filename);
output_filename = mm_alloc(strlen(input_filename) + 3);
strcpy(output_filename, input_filename);
ptr2ext = strrchr(output_filename, '.');
/* make extension = .c resp. .h */